If you are still confused after watching this old video then the later version is easier to follow and answers many of the common questions from this video - ua-cam.com/video/_iKzPArooLM/v-deo.html
Mine holds 2 LiPO batteries okay and it dies after being played with but one of the batteries is less powered than the other one when I'm showing 8.4 volts the other one still showing 11 volts what's going on
Very good explanation. It might just be also worth mentioning in this video that if you connect the two batteries in parallel the storage capacity in mAh doubles to 4000 mAh, and when connected in series, it stays the same at 2000 mAh.
Thank you! With watching this video and your 101, I now understand LiPo batteries. I have been a Nitro/Gas guy for a while and have fallen behind on the technology of electrics.
I m thankful to you I want to calculate battery bank for my solar plant Your video give me whole solution of my problem Now I can design my battery bank as my need Thanks again
Thank you, this solved a problem for me. I'm installing an e flite 360 onto a hanger 9 xcub 60cc. I'm using a a castle 160 amp esc and a bec. I want to run 12s and didn't know how to rig up the batteries. You explained how to solve my issue, great video
It should probably be important to mention that batteries of different voltages (or cells) should NEVER commented in parallel, while batteries of different mAH should never be connected in series. Connecting batteries that have different voltages in parallel can cause excessive current from the higher voltage pack to uncontrollably dump that charge into another lower voltage pack, as the system tries to equalize itself. if the current is limited, the lower voltage pack can safely charge up and the higher voltage pack can safely discharge into it, and of course the cell numbers are the same (3S to 3S) thats not much of a problem, nor is it in issue when both packs are already at the same voltage and same cell count. The packs can be different capacities since even if one dies faster, than the other pack will help the dying pack out by taking the load off of it, as well as supply the grunt of the power. More technically, it is an equilibrium condition. When it comes to series circuits, the cell count actually can be different between the batteries, however, the capacities MUST be closely matched or else the one pack will discharge faster than the other, and they will need to be continuously balanced, and if one pack fall below 3V per cell, and the multi rotor is trying to draw lots of current, it can be thought of like a short-circuit, and you can see the small dead battery will be *reverse charged* by the bully battery, and it will probably explode! I like explosions, but not expensive ones! (Also I do not like class D fires. They nasty!)
exaclty true ! in parralale u can mix different capacity 1 ah+ 3 ah + 10 ah = 14 ah and if use 7.5 ah ( 50 % of total capacity ) and u disconnect them each pack will still have 50 % of their capacity that mean the 1 ah battery with be remain with 0.5 ah , the 3 ah will remain with 1.5 ah and the 10 ah will have 5 ah still remain ,, many people believe that the smallest will die first ,,, ,, it's exaclty the opposite in serial it's could , but not in parralale ,, u right to mention it
pochul I actually never thought about it in terms of capacity, but absolutely true, considering the similarities of the charge/discharge curves between the same cells w/ the same chemistries; and also the voltage, since the cells will remain at exactly the same voltage when in parallel. Good point!
+Power Max I would like to move into the parallel configuration for my quad. I am not entirely confident that ensuring the voltages are identical is practical. If I charge the two batteries separately, I would assume there will be small difference between the two given the quality of the chargers. Now the difference may be only negligible, but I would assume there would be some at least short lived high current between the two when connected that would be very unhealthy for the batteries and potentially hazardous if done with every charge and use. Would you have any practical suggestions for equalizing the batteries after charging? Would a large series resistor between the 2 work?
+Alexander Buckley Just make sure they are both the same chemistry, and same nominal voltage or cell count. (11.1V 3S), and that both are fully charged before connecting them in parallel. If you change your mind about charging them separately, I recommend also connecting the individual cells in parallel. The ballence connector gives you limited access (in terms of maximum current) to those points, good enough for this purpose.
+Power Max My original concerns were related to connecting to separately charged batteries together in-system. I am a computer engineer, I am good with circuits and all that... but batteries do not really fall into my knowledge area. Even for small voltages, I can see there being a large transient on connection. I just don't know if that is a bad. There would not be any sustained high temperature that would be similar to shorting the battery. But on the chemical composition level I have no idea what impact that may have. Repetition of minor damage adds up. It goes without saying there are significant flight time and safety concerns. I have started thinking about parallel charging since doing some further research. It is the balance connector that makes parallel charging not so 'plug and play'. Are you suggesting wire the individual cell from each battery in parallel for charging or during operation or both? I am trying to come up with a solution here that is safe, electrically sound, does not require too much custom wiring or any steps that could be mistaken. I'd like it to be reproducible and simple enough for a lay person (idiot proof). I am thinking now the way to go would be to equalize the batteries in parallel (cell by cell) using series resistors. I can make an assembly that can be attached and switch operated. After that, Y-cables can be connected for both power lead and balance lead, 'forever' keeping them as a single unit for both charging and use. I am just wondering how they would behave, two cells permanently in parallel. It is obvious in the series configuration that each cell behaves differently. I just have no idea what impact permanent parallel connections have on battery life/capacity. I wouldn't be surprised if this even was a beneficial arrangement, one that may reduce the chances of an individual cell dropping below it's threshold while the total voltage still remains over the low voltage cutoff limit. Or one cell's charge voltage could be reached with limited capacity, triggering the charge stop. Meanwhile the other cell could have still taken more charge. Or maybe both things happen it is a trade off, life for capacity. I am just worried about some sort of favoritism scenarios occurring that I don't know about. Like one cell getting pushed to hard in use, hastening it's demise.
Excellent video, so the voltage in series connection is what increases rpms while the amps increases the torque in parallel, soon I'm going to do a short video showing 120volts with a current of about 7.5amps and another being 240 at 15 amps , lithiums may be capable of high current using them in a electrolytic fashion, in general lithiums are usually separate to the load through a pcb unlike nickel that just use diodes, consider rewinding the rotor increasing the gauge to handle the unexpected current or unregulating the current
Thanks for explaining the difference to me. I always mix the 2 up for some reason. Had the correct cable to make a 12s out of 2 6s lipo batteries but thought i connect them in parallel instead of series. And hats of for you you are a very patience man with all the questions you get. It's like people can't think for themselves and are looking for a quick and easy answer instead of looking it up themselves on forums or use there brains. I know i went looking for a answer myself but this was a pretty simple one. I see a lot of people in the comments here asking the same question over and over again. I don't have a problem with explaining something to new people in the hobby but i give up on them if they keep coming with the same every time.Do your research self it gives you a much better feeling if you solve the problem yourself with research on forums by digging trough the site.
Thanks for posting that. I agree too many want the 'quick fix' rather than think the problem through and use the resources available and gain a better understanding of what they are looking at. I try and teach the person to fish, not give them one so they can help themselves next time they are stuck ;) Happy flying!
5:00 slip of the tongue probably, but BOTH arrangements double the power compared to the single battery, because power = current * voltage. I think it would have been clearer to say that parallel gives you effectively a 3s 4000mAh 10C battery and series gives you a effectively a 6s 2000mAh 10C battery, both able to put out the same max power, which is twice what the single battery can do. Maybe introduce the 3s2p / 6s1p notation, too. It would also have been important to say that parallel connection can be dangerous if the voltages of the batteries are different, as they will try to equalise voltages (one charges the other) and high currents can flow in that situation if you do it wrong.
Yes, connect them in parallel, you will get twice the run time (or a bit more) and your motor gets the same voltage (but maybe a bit more constant). However, you need to make sure that the voltages of the cells you combine in parallel are very very close.
Thanks for this little video! Just needed a quick refresher as to what connectors I had as I haven't driven/worked with my RC Buggy for a while. Just one thing I would mention, with the theory you've given, is parallel basically gives an RC model a longer flight/run time, but the same power. With series as I run in my buggy with 2 2s lipos, it gives it a slightly longer run time but also doubles the power that the buggy can draw. So since my setup can handle a 4s lipo, basically doubles the max speed my buggy can get to :)
+TBD_TheBlackDog as you increase the voltage by connecting your batteries in series it does mean that the motor needs to pull slightly less current to get the same wattage. This will have the effect of giving you a slightly longer run time as well. Same effect as replacing the 3s with the 4S pack in a model
After reading the comments, I have learned NOT to connect batteries in series if they are different amp hours. I am not sure why the amp hours are not added up like they are when connected in parallel. Thanks for letting us know.
Quick question, I can add a 10s4p and a 2s4p in series together and make a 12s. Like the ESC will see 12s or 50.4v fully charged. I'll obviously disconnect for charging them separately. It's for a electric skateboard increasing the voltage DIY. Using stock 10s4p 18650 battery and adding 2s4p 18650 battery. Like going from 4s to 6s on Quadcopters. More power n rpm. Great videos to always refer back to. Cheers again.
I have three 4s 1800mHA 65C batteries, when i connect them in parallel, it's will give 195C will it effect my motor and ESC, I know My ESC and motor can handle 4S.
if i understand this right a 3s 2000mAh 10c 12.4 battery contains inside it 3x 1 cells 2000mAh 10c ~4.15v packs (safe recommended charging voltage). So with those LiHV batterys that are now showing up i could take apart a larger pack like a Turnigy Bolt 500mAh 2s 7.4v 65c - 130c to get 2x 500mAh 65c - 130c ~4.35v (can be safely charged to 4.35v per cell) for a single cell rc model and say run in a hubsan quadcopter as a example provided it fits. This would be a massive improvment over the stock batterys of most single cell quads right? slightly higher volts with high discharge giving way more power at a cost of weight.
Hey dude great video, couple of questions. I have a 3S LIPO, is there a way to tell when the battery is out of charge? My current method is by going from fully charged at (4.2v per cell) 12.6v to when it hits (3.7v per cell)11.1v, is this correct or is there a more accurate way? Also when connecting in parallel will all cells across both batteries discharge at the same rate?
I thought connecting the negative lead to the positive lead on the other battery together short circuits it? I need a 6s battery and plan on connecting in series. So can I do it like that without short circuiting it?
That's how batteries are connected in series. If you're still not sure after watching the video, get someone who understands electronics to help tomavoid issues. Best of luck
Great video. I want to connect 2 15ah 48v batteries-exactly same make and specs together, but the seller seems to think I will get problems doing this. Have you used these batteries on an ebike or such and how did they do? Any issues longterm?
Batteries are connected in series and parallel all the time, it’s how we get batteries with much higher voltages and currents. I’d listen to the seller though, they may know more than we do. Happy flying!
Ah ok, thanks for the information. I think the company are just trying to avoid being blamed if anything goes wrong, as the batteries would be identical-same brand specs, on a mid drive motor. They also say I shouldnt use the 60v 20ah battery they sell! But they sell it! Have you attached batteries together on ebikes or scooters in parallel? Any issues?
I see the video is old but it worth a shot.... I have 2 - 3 cell batteries with a 12 gauge wire and a parallel connector with 14 gauge wires will that be a problem?
in parralale u can mix different capacity (but not different volts ) 1 ah+ 3 ah + 10 ah = 14 ah and if use 7.5 ah ( 50 % of total capacity ) and u disconnect them each pack will still have 50 % of their capacity that mean the 1 ah battery with be remain with 0.5 ah , the 3 ah will remain with 1.5 ah and the 10 ah will have 5 ah still remain ,, many people believe that the smallest will die first ,,, ,, it's exaclty the opposite in serial it's could , but not in parralale ( serial can't mix different capacity but different volts can ,, if u mix different capacity in serial the value of u pack is the lowest value of the smallest pack in serial 2000 mah + 3000 mah , = 2000 mah , u can't use the 1000 mah remain bcuz the other pack already to 0 mah , it's will die ,, but u can disconnect it and use ur pack alone with his 1000 mah remain but not with the empty pack ) hope u get it
pochul Although thats true, it is not necessarily the best solution, for complicated practical reasons, it is better to use the same cells and manufacture so that differences in the chemistry for them does not cause issues. (which may cause differences in the internal resistance, charging curves, thermal characteristics, etc.) Point is it can be done, although like Painless360 says, not recommended. Only Macgyver is allowed to do that! :)
Instead of using connectors like you have can I just solder the positive of one battery and the negative of the other battery together and be left with a positive and negative?
Thank you this was very informative I have a bike I’ve been building the last couple months and I have to hover board batteries both 37 V and 20 A and I’ve been trying to figure out if I can connect both positives and negative’s together and then charge both of them together as well as discharge as they don’t have a second set of connectors but really just a positive and a negative
This is a long shot hope you see this… so if I connect 2 3s 2200mah lipos in parallel… what should my osd read for mah?? Do I set it for 4400mah or 2200 mah ??
hello great video, i want to connect several lipo rc packs together for a ebike build but i want know do i remove each bms chip from each pack to install a big bms overall or do i just run the lupis with no bms and use a balance charger? if you help that would be fantastic
Perfect thank you, I am looking at two extra 2s lipos 1200 mah 30c and we all love as many extras as we can get it will be a 4s for my quad, this is perfect thank you.
Hello. I have a question. I have several 6s 5200mah 50c packs and will be needing 8s soon. The ESC connector has a loop connector connected to the 2 ESC leads which would normally have two 4s packs connected to each. Would it be possible to just buy some 2s packs that are the same brand, mah, and C rating and combine that with the 6 to get 8? Ive asked this in another forum and got mixed answers. Some said NO WAY!! And others said its no different than combining two 4s packs to get 8s. Thank you
Thanks for this video it will be very helpful when I'll be connecting second battery to the Scooter. Just one question if you don't mind. Will different length of the cables connecting batteries to the controller (one battery in the floor next to board other one on the handle bar) cause some troubles?
Hi, just watched your video and it’s very helpful, I have a question if you could help? I have a cctv test mointor which the battery doesn’t work properly, on the charger it said 12 v in to charge but when I do that the charger get very hot and doesn’t charge properly, when I took battery out it looked like it was 7.4 battery that was in series, do I need use a 7,4 battery charger as original didn’t come with it , also the cctv mointor has a 12 v out and confused how that works?
Tricky to comment without the specifics of the monitor you have but that sounds like there is an issue with the charger, charging circuitry or battery. You usually need a higher voltage from the charger to push the current through the battery you're trying to charge but if its getting hot somethings wrong.. Best of luck
Thanks heaps for these videos, very easy to understand. Quick question for you, I've got a FPV/aerial recon plane using a pixhawk clone and I want to extend my flight time. If I connect two 3S 2200mAh batteries in parallel obviously battery voltage output will be the same at 11.1V however for the sake of setting up my battery monitor in Mission Planner, I will specify a capacity of 4400mAh? i.e in parallel voltage does not multiple but capacity (mAh) does? Thanks!
great info sir 👍 quick question i have a 3s 65c 5000mah lipo it's 3 to 4 months old but only used 3 times then put into storage voltage. could i buy the same 3s and use it in parallel with the 3 to 4 month old battery that was used 3 times
Painless360 it was used 3 times when first purchased new from hobbyking,then put in storage voltage and been sitting in a cool dry place ever since, i was just worried its not going to perform aswell but it reads 3.80v per cell
in the race competition, we have to change the battery as the track is long, and they have to keep the video signal. im planning to use parallel XT60 method. However, is it safe enough to plug in the different voltage battery? e.g. when swapping 14.7V landing, keep plugged for video signal, and plug in 16.8V new battery. then take out the old 14.7 V. (probably few seconds that both battery connected each other) Is it a fairly safe way and wont damage the battery? as it is a simple XT60 connected into parallel, i dont think there is limit of current.
It's there a way to use the balance lead to power two items simultaneously? I want to power an immersion rc FPV transmitter and also a low voltage battery alarm too. I'd prefer to avoid wiring my tx into the breakout lead so I can readily move it to it to different models. Thanks in advance for any guidance.
Yes you can, connect both of the things you need to power to the outside pins of the balance tap connector to get 12v out of the pack (assuming 3s). Using the balance tap also allows you to pull lower voltages out of a larger LIPO too (i.e. connect just to two of the 3 cells in a 3s lipo to power an item that needs 7.4v. Be careful not too pull too much power and be more careful to balance the packs if you are only connecting to some of the cells in the pack. Hope this helps.
Painless360 i am whondering how far i can drain a lipo can i drain both 5000mah packs to 95% i know you cant go to 100% discharge but 90% to 95% shoud be ok because the packs are thunder power 7s with 70c burst rate so it will tax them less this is for a trex 700e dominator because the lipos disturbingly fit lol so i am going 14s so i can do mild sport flying i am trying to get my model under 5kg with lighter upgrades from kde plus lighter ceramic hybrid bearings plus going with a kosmik 200amp and a pyro 750 560kv competion motor which is lighter with plenty of grunt plus cutting and shorting down wires aswell plus cutting 1inches to 2inches of wire holds a gram or two lol plus steel abec 7 bearings weigh more than ceramic steel hybrids so losing quite a bit of weight helps i like longer flight times plus my hs is 2000rpm which is plenty of power for me i am not a stick banger reason you have more chance of killing your self plus taxing lipos which cant handle your flying style plus kde upgrades are air craft grade alumium which is stronger and lighter than stock so i will see my model drop weight under 5kg
Hi Jonathan, you should plan to pull no more than 80% from a LIPO pack regularly. Taking more starts to damage the pack physically and effects its performance. Plan to pull 4000mah from a 5000mah pack for long life and a margin of safety. Hope this helps, happy flying!
Khmer kid No, volts is volts ;)Power is measured in watts and watts is volts x amps. So if you have a 150watt motor as you increase the voltage the current is pulls goes down..Hope that made sense.
Thanks for the quick response, no just asking because I planed on purchasing 3000w mid drive and the I asked owner whats a good recommendation on the battery I should use and he told me to use 2 48v 12ah battery's in parallel to get 48v and 24ah and i was just thinking how is 48v strong enough to push a 3000w motor seeing how all the top brand bikes use 70v and up.
Higher the 's", higher is the voltage. Shouldn't parallel connection of two 2200 mAh 3s batteries give 4400mah 3s as parallel connections ensure "same" voltage output across terminals?
have a question I have a e-bike and I have two 36-volt batteries hooked and serious these batteries I have are no more than maybe two months old and I bought a brand new one thinking that what solved the problem and it didn't but I will hook these batteries up in series and put a load on the bike like going up the hill at half throttle I will be halfway up the hill and the votes in the battery were dropped down rate in front of my face so far the bike were cut off and then I would have to unplug the plug replug it and it will be okay until I put another load on the battery and then that would happen again could you please let me know what the problem could be
Both potentially. If you're not planning on changing the ESC, motor and prop for maximum efficency at the higher voltage then parallel is the best bet..
when you place multiple batteries for an r/c car, does the battery C rating has to match? example if I used a 2S lipo 25C plus a 4s lipo 50C rating to have 6S lipo is that ok? or would both batteries have to have 50 c rating?
So if I understand correctly parallel will accomplish more range and more operating time @ the voltage of one battery and series will give more volts or more punch or Higher output demands and the mAh of one battery?
Both provide more useable energy for the model. It's how that's available to the model that changes. The higher voltage will turn the brushless motors faster so you do need to reduce the prop size normally. See the newer video on this topic for more details.. Best of luck!
I have 4x 30amp ESCs, so theoretically together they will be capable of drawing 120amps. I was taught that whatever battery I choose, it must be able to supply those 120amps just to be safe. So, suppose I have a 4S 2200mAh 30C battery. On its own, it will not be able to meet that 120amp safety threshold that my ESCs require (22.0 x 3.0 = only 66.0amp). Now, if I run two of these in parallel, is it correct to assume 44.0amp (capacity of 2 batts in parallel) x 3amp = 132amp (safely exceeding the draw that 4x 30amp ESCs could ever make)..?
Hi mate great video I have a qestion about connecting parallel lipo batterys to a drone the lead I have made has two battery connectors an the connection to the drone is soldered to the board is it ok to connect one lipo battery at a time on a parallel lipo setup.
Can you run two 6 cell 7.2 2000mah battery packs that are in a series circuit into a parallel circuit? Or will that cause problems? Basically asking do the batteries in a parallel circuit have to be single cell?
I'm looking in to getting the "Cirrus SR22T 1.5m BNF Basic" but I want to get some good battery life out of it, I'm thinking of getting 2 "Li-ion 4S1P 14.8V 3500mAh ENDURO Advanced Lithium" Batteries and joining them but it adds to about a pound of weight to the already 3.6 pound plane, how well would the plane be able to handle that extra pound? Thanks.
Hi Painless, As usual a good video. Only thing I am missing (or haven't found in an other video of you) is: I have an S500 which requires a 3s battery, I want to buy two 4500ah 3s batteries and usually use them in parallel. I assume i need identical charge state (being best for the battery). But can I use them individual as well and then use them in parallel again?
I have an electric kick-scooter (e-twow master) and I want to make it faster. The ESC on the scooter can take up to 50V . The stock battery is specified at 29.3 V when charged and has a capacity of 8Ah. I need a LiPo battery to wire it in series with the main one. What battery should I use ?
+Tantareanu Jimmy this is a little outside of my experience. But you'll need something that means the overall voltage will still be below that 50 volts maximum that the ESC is rated for.I believe places like Hobbyking sell things like this now too. Best of luck!
Thank you for the video, very helpful. I'm planning to buy a 6S 16000 mAh battery to power a ~8A motor for a robot I am building... I tought it could power it for 2 hours but it has 10C written too...so does it mean the battery is capable of 160A? Can I power my motor for 20 hours with that battery? Sorry if it sounds dumb but I'm new in LiPo(s) Thank you again
The videos in the 'Introduction to Remote Control' covers many of the basics. a 16000mAh pack will provide 16 Amps for an hour, 32 Amps for 30 mins, 64 Amps for 15 mins etc. The 10C on the pack means that it can deliver 16,000mAh x 10C = 160amps max. Not sure how big the wires on it are! :D
I am new to electronics. I am building a portable Bluetooth speaker and wish to have long run time. like plus 12 hours. the amplifier module uses 3.4 to 4.2v. Could you recommend a charging module with protection? would 4 18650 @ 3.7v in parallel or in series with a step down transformer. I am new to this sup I am not sure if I amasking the right questions.
This is a little outside what I support here, you'll need a voltage regulator to get that 4.0v you need for the amp, once you know how much current it uses then you can figure out the capacity of the battery you need for a 12h operating time. Best of luck..
Halo, great video. I have some question, what if i use 2 battrey with different mah but same voltage in paralel mode. Will it work fine? Or any suggest and what? Thanks.
I wouldn't as one of the batteries will be empty first.. If you are going to do this, start with identical packs until you have a better idea of the principles. Best of luck
So although you probably mentioned this throughout the video, i've got a short attention span so i can't be bothered if you don't mind but should i use paralell or series to maintain the longesyt run time (double the mah), as i heard somewhere that one doubles the speed and the other doubles the run time. Thanks
I am building a battlebot and I was wondering if there was a way to wire up two batteries in series to only give power to the weapon motor and weapon, and have a singular battery give power to only the rest while being hooked up all to one receiver and motor controller?
You could. You'll need to watch how the power from the principle battery is pulled as it will get lower faster and think about the low C rating for the LIPOs as you will want the power to be there with minimum drop. Best of luck!
Thanks for this video, very useful and simple. I'm interested in making a 12s6p battery, could I make the 12s6p battery then connect a couple of lipo batteries in parallel to increase the capacity?
Hi, I'm using 2 - 6s , 5000Mah LiPo's in series for a total of the 24volts you mention but my flight times are short. (130c rated per EDF MFG recommendations)is it possible to add a third battery in Parallel after the series connection to gain more Mah and thus longer flights? Vince
Hi, I intend to make a portable usb battery bank for charging my mobile phone using 3 single S LiPo 3,7V batteries in series I have, so it would give me total output of around 12V at 3S that would be stepped down to 5V. However, they all have different mAh and C ratings. One has 500 mAh 20 C, the other 600 mAh 25 C, and the third one 2000 mAh 1C. Could I charge these three batteries all at once treating them as a single 3S battery, or should they all be charged separately? Btw, I'm not an expert in LiPo batteries and any suggestions are welcome. Cheers!
Since I already have these batteries laying around I used for my RC drone that I accidentaly crushed on the road last year because I flied it out of range, I really want to put at least on of these batteries in good use. Let's say the one with most capacity - 2000mAh @ 3.7V, but then use some kind of step up converter. Also connect a low voltage buzzer to it. Cheers!
Depends on what you mean by performance. That is the same wattage (V x A) but the[performance of the motor and prop has just as much to do with how much thrust is produced..
Hey, I'm wondering does a Electric R.C. motor run faster with more Volt or more AMPs. Say a 11.1 is running a electric r.c. motor that can handle up to 35volt. What would make it run Faster VOLTS or more AMPs ?
If you watch my other video - ua-cam.com/video/uLutMoh4Ttg/v-deo.html - you'll see that the speed of the motor is directly related to the voltage. The motor will draw less current with a higher voltage too. Be careful to reduce the size of the prop used when you increase the voltage. Happy flying!
just a quick question the lg 18650 battery from ebay (Lithium Ion ICR18650 MF1 2150mAh ) 20x cells each cell is 2150 ah. The spec sheet says Max. Charge Current 1.0C(2,150mA). So when you have this pack 36v 10s 2p what is the maximum ah current can you charge it 2ah 42v current or 2ah current x 20 cells ~ 40 ah current at 42v. Now if you have 3x 10s 2p in parallel which is 36v 12.12 ah what is the maximum ah current you can charge thats 60 cells is it 60 cells at 2ah current which is 120 ah current for 60 cells or just 2 ah for 60 cells using cccv charger Thank you very much
Hey there this has given me great understanding . I want to connect 2x36v in series for my ebike to run a 2000w hub motor . On the series diagram in this video could you point out where you would have the ignition and the charger point connect to ? Cheers
Look, if you connect them in parallel, you will be able to get more flight time, bit it won't be as fast as if you connect them in series, so it's basically like this: Parallel: more flight time, more heat on the motors cause of the amps Series: more speed, less heat on the motors.
hello Painless360, i have a question, i have a drone syma 5 that works with a lipo battery 1cell 3.7 volts, 500 mAh, and also have a drone JJrc h8 that works with a 2 cell 7.4 500 mAh and those batteries has a balancer conector, can i repalce de 7.4 volt battery for 2 batteries 3.7 volts making a conector in serie? is the same than the stock 7.4 volt? does not affect if theres not have balancer conector? i will apreciate your answer, for me is more conveninete for price and time to chage use the 1 cell 3.7 volts batteries, thanks.
+IMPORTECHML You can but make sure that the mAh rating of the 1cell batteries are the same as the 2 cell you're using. I would recommend investing in the right batteries for the model as the extra wires and connections all add weight and points of failure to the model and some of the smaller models are very sensitive to extra mass. Best of luck.
Hi, sorry for the silly question (love the channel btw) I have two 11.1 3s 2200 mah batteries I would like to put as parallel as I would like a long flight time. I work it out to be 66amp would I have to get ESC's rated to 70A? Thanks Matt
Great Video! I think I understand. So I have a quad copter. I have two 1800 mah 100C batteries. If I run the batteries Parallel, I'll get the same amount of power to the motors and I'll get twice the battery life? Am I right? It would be like having one 3600 mah 100C battery?
If you are still confused after watching this old video then the later version is easier to follow and answers many of the common questions from this video - ua-cam.com/video/_iKzPArooLM/v-deo.html
So do you just leave the charging cord alone and it doesn’t need to plug into anything when running your rc like will it still work in water?
Instablaster.
Mine holds 2 LiPO batteries okay and it dies after being played with but one of the batteries is less powered than the other one when I'm showing 8.4 volts the other one still showing 11 volts what's going on
Awesome 9 years later and your video/content/information is still relevant!
Very good explanation. It might just be also worth mentioning in this video that if you connect the two batteries in parallel the storage capacity in mAh doubles to 4000 mAh, and when connected in series, it stays the same at 2000 mAh.
Ooooooo thank you man!
9 years after, still being so helpful 🙏
Thank you! With watching this video and your 101, I now understand LiPo batteries. I have been a Nitro/Gas guy for a while and have fallen behind on the technology of electrics.
I m thankful to you
I want to calculate battery bank for my solar plant
Your video give me whole solution of my problem
Now I can design my battery bank as my need
Thanks again
now that is a CLEAR heck of explanation!!! AS CHRYSTAL CLEAR. THANKS MAN ITS VERY KIND OF U!!
That actually cleared a lot up I'm a vapor and all the vapor vids confused me but this made it all clear thank you
I did this to my kraton 6s love it running 2 3s 7000mah 100c 💪🏼 now I get 14000mah plus 200c of power 🫡 you sir are the best!!
Great explanation, good video i knew it's gonna work making 2pcs of 3.7v 500mah into 7.4v. it's been a decade and your video still very helpful 👌
Thank you, this solved a problem for me. I'm installing an e flite 360 onto a hanger 9 xcub 60cc. I'm using a a castle 160 amp esc and a bec. I want to run 12s and didn't know how to rig up the batteries. You explained how to solve my issue, great video
It should probably be important to mention that batteries of different voltages (or cells) should NEVER commented in parallel, while batteries of different mAH should never be connected in series.
Connecting batteries that have different voltages in parallel can cause excessive current from the higher voltage pack to uncontrollably dump that charge into another lower voltage pack, as the system tries to equalize itself. if the current is limited, the lower voltage pack can safely charge up and the higher voltage pack can safely discharge into it, and of course the cell numbers are the same (3S to 3S) thats not much of a problem, nor is it in issue when both packs are already at the same voltage and same cell count. The packs can be different capacities since even if one dies faster, than the other pack will help the dying pack out by taking the load off of it, as well as supply the grunt of the power. More technically, it is an equilibrium condition.
When it comes to series circuits, the cell count actually can be different between the batteries, however, the capacities MUST be closely matched or else the one pack will discharge faster than the other, and they will need to be continuously balanced, and if one pack fall below 3V per cell, and the multi rotor is trying to draw lots of current, it can be thought of like a short-circuit, and you can see the small dead battery will be *reverse charged* by the bully battery, and it will probably explode! I like explosions, but not expensive ones! (Also I do not like class D fires. They nasty!)
exaclty true ! in parralale u can mix different capacity 1 ah+ 3 ah + 10 ah = 14 ah and if use 7.5 ah ( 50 % of total capacity ) and u disconnect them each pack will still have 50 % of their capacity that mean the 1 ah battery with be remain with 0.5 ah , the 3 ah will remain with 1.5 ah and the 10 ah will have 5 ah still remain ,, many people believe that the smallest will die first ,,, ,, it's exaclty the opposite in serial it's could , but not in parralale ,, u right to mention it
pochul I actually never thought about it in terms of capacity, but absolutely true, considering the similarities of the charge/discharge curves between the same cells w/ the same chemistries; and also the voltage, since the cells will remain at exactly the same voltage when in parallel. Good point!
+Power Max
I would like to move into the parallel configuration for my quad. I am not entirely confident that ensuring the voltages are identical is practical. If I charge the two batteries separately, I would assume there will be small difference between the two given the quality of the chargers.
Now the difference may be only negligible, but I would assume there would be some at least short lived high current between the two when connected that would be very unhealthy for the batteries and potentially hazardous if done with every charge and use.
Would you have any practical suggestions for equalizing the batteries after charging? Would a large series resistor between the 2 work?
+Alexander Buckley Just make sure they are both the same chemistry, and same nominal voltage or cell count. (11.1V 3S), and that both are fully charged before connecting them in parallel.
If you change your mind about charging them separately, I recommend also connecting the individual cells in parallel. The ballence connector gives you limited access (in terms of maximum current) to those points, good enough for this purpose.
+Power Max
My original concerns were related to connecting to separately charged batteries together in-system. I am a computer engineer, I am good with circuits and all that... but batteries do not really fall into my knowledge area.
Even for small voltages, I can see there being a large transient on connection. I just don't know if that is a bad. There would not be any sustained high temperature that would be similar to shorting the battery. But on the chemical composition level I have no idea what impact that may have. Repetition of minor damage adds up. It goes without saying there are significant flight time and safety concerns.
I have started thinking about parallel charging since doing some further research.
It is the balance connector that makes parallel charging not so 'plug and play'.
Are you suggesting wire the individual cell from each battery in parallel for charging or during operation or both?
I am trying to come up with a solution here that is safe, electrically sound, does not require too much custom wiring or any steps that could be mistaken. I'd like it to be reproducible and simple enough for a lay person (idiot proof).
I am thinking now the way to go would be to equalize the batteries in parallel (cell by cell) using series resistors. I can make an assembly that can be attached and switch operated. After that, Y-cables can be connected for both power lead and balance lead, 'forever' keeping them as a single unit for both charging and use.
I am just wondering how they would behave, two cells permanently in parallel. It is obvious in the series configuration that each cell behaves differently. I just have no idea what impact permanent parallel connections have on battery life/capacity.
I wouldn't be surprised if this even was a beneficial arrangement, one that may reduce the chances of an individual cell dropping below it's threshold while the total voltage still remains over the low voltage cutoff limit.
Or one cell's charge voltage could be reached with limited capacity, triggering the charge stop. Meanwhile the other cell could have still taken more charge.
Or maybe both things happen it is a trade off, life for capacity.
I am just worried about some sort of favoritism scenarios occurring that I don't know about. Like one cell getting pushed to hard in use, hastening it's demise.
Excellent video, so the voltage in series connection is what increases rpms while the amps increases the torque in parallel, soon I'm going to do a short video showing 120volts with a current of about 7.5amps and another being 240 at 15 amps , lithiums may be capable of high current using them in a electrolytic fashion, in general lithiums are usually separate to the load through a pcb unlike nickel that just use diodes, consider rewinding the rotor increasing the gauge to handle the unexpected current or unregulating the current
Thanks for explaining the difference to me. I always mix the 2 up for some reason. Had the correct cable to make a 12s out of 2 6s lipo batteries but thought i connect them in parallel instead of series. And hats of for you you are a very patience man with all the questions you get. It's like people can't think for themselves and are looking for a quick and easy answer instead of looking it up themselves on forums or use there brains. I know i went looking for a answer myself but this was a pretty simple one. I see a lot of people in the comments here asking the same question over and over again. I don't have a problem with explaining something to new people in the hobby but i give up on them if they keep coming with the same every time.Do your research self it gives you a much better feeling if you solve the problem yourself with research on forums by digging trough the site.
Thanks for posting that. I agree too many want the 'quick fix' rather than think the problem through and use the resources available and gain a better understanding of what they are looking at. I try and teach the person to fish, not give them one so they can help themselves next time they are stuck ;) Happy flying!
5:00 slip of the tongue probably, but BOTH arrangements double the power compared to the single battery, because power = current * voltage.
I think it would have been clearer to say that parallel gives you effectively a 3s 4000mAh 10C battery and series gives you a effectively a 6s 2000mAh 10C battery, both able to put out the same max power, which is twice what the single battery can do.
Maybe introduce the 3s2p / 6s1p notation, too.
It would also have been important to say that parallel connection can be dangerous if the voltages of the batteries are different, as they will try to equalise voltages (one charges the other) and high currents can flow in that situation if you do it wrong.
Will a BMS help in this case? Parallel charging of similar battery packs
Therefore, to obtain a "double capacity powerpack" from two batteries, we should connect them parallel to maintain the voltage of powered circuit?
H
Yes, connect them in parallel, you will get twice the run time (or a bit more) and your motor gets the same voltage (but maybe a bit more constant).
However, you need to make sure that the voltages of the cells you combine in parallel are very very close.
@@c.g.c2067what’s funny?
Thanks for this little video! Just needed a quick refresher as to what connectors I had as I haven't driven/worked with my RC Buggy for a while. Just one thing I would mention, with the theory you've given, is parallel basically gives an RC model a longer flight/run time, but the same power. With series as I run in my buggy with 2 2s lipos, it gives it a slightly longer run time but also doubles the power that the buggy can draw. So since my setup can handle a 4s lipo, basically doubles the max speed my buggy can get to :)
+TBD_TheBlackDog as you increase the voltage by connecting your batteries in series it does mean that the motor needs to pull slightly less current to get the same wattage. This will have the effect of giving you a slightly longer run time as well. Same effect as replacing the 3s with the 4S pack in a model
Extremely well explained and diagrams just as nice and very helpful 👍🏼
Thanks for taking the time to impart your knowledge to everyone ,nice little tutorial 👍
Thank you! This made it so much easier to get my head around, great work
Great video, one question though, how do you charge the lipo battery in series? How about in parallel setup?
I'd always charge them seperately.... Happy flying
After reading the comments, I have learned NOT to connect batteries in series if they are different amp hours. I am not sure why the amp hours are not added up like they are when connected in parallel. Thanks for letting us know.
Best explanation out there, and the visuals as well every one else is cramming numbers at ya and it makes no sense to me any way….!!! 🤘😎🤘
Finally some explained it properly and simply....
Quick question, I can add a 10s4p and a 2s4p in series together and make a 12s. Like the ESC will see 12s or 50.4v fully charged.
I'll obviously disconnect for charging them separately.
It's for a electric skateboard increasing the voltage DIY.
Using stock 10s4p 18650 battery and adding 2s4p 18650 battery.
Like going from 4s to 6s on Quadcopters.
More power n rpm.
Great videos to always refer back to.
Cheers again.
Yes, but be very careful that the cell specs are the same... best of luck
Great video could you recommend some batteries to run in series to make up a 52volt 14/16 amp battery for my ebike build any info much appreciated.
Great video explaining proper technique
i have different brands and sizes.. say i combo a 2s 3500mah 20c and different 3s 4000 mah 25c.. to get a 5s total would this be safe to run
So on charging do you connect the two charging inputs in parallel to charge both batteries? Mike Hurrell
I'd disconnect the packs to charge them one by one personally.. Less chance of messing something up. Best of luck!
Gotta love a 8 year old video still being up to date🤣👍
I have three 4s 1800mHA 65C batteries, when i connect them in parallel, it's will give 195C will it effect my motor and ESC, I know My ESC and motor can handle 4S.
+Skytech Today No, you'll get a 65C 5,400mah pack.. ;) My advice - buy the right battery for the job..
thank you so much I've been looking for a video to explain serie parallel for days I really appreciate your video
if i understand this right a 3s 2000mAh 10c 12.4 battery contains inside it 3x 1 cells 2000mAh 10c ~4.15v packs (safe recommended charging voltage).
So with those LiHV batterys that are now showing up i could take apart a larger pack like a Turnigy Bolt 500mAh 2s 7.4v 65c - 130c to get 2x 500mAh 65c - 130c ~4.35v (can be safely charged to 4.35v per cell) for a single cell rc model and say run in a hubsan quadcopter as a example provided it fits. This would be a massive improvment over the stock batterys of most single cell quads right? slightly higher volts with high discharge giving way more power at a cost of weight.
+Side85Winder Possibly, something to look at as these batteries become more popular.. Happy flying!
Hey dude great video, couple of questions. I have a 3S LIPO, is there a way to tell when the battery is out of charge? My current method is by going from fully charged at (4.2v per cell) 12.6v to when it hits (3.7v per cell)11.1v, is this correct or is there a more accurate way? Also when connecting in parallel will all cells across both batteries discharge at the same rate?
The voltage ranges you're using with the batteries are great. Using a timer on the radio, or battery voltage telemetry can help... Happy flying
@@Painless360 10 year old video, replies to comments next day. Absolute legend. thanks fella!
Are there any dangers when wiring lipos together? Should each lipo be wired to their own ESC or do we wire the ending plug to one ESC?
You should always take care when connecting Lipo batteries. How you connect them would depend on the model... best of luck
Clear learning video, but what happens if 2 differend 4S accu's are used, one 4200 mah and one 4000 mah are they middeld 4100 ?
Depends on how you connect them. Please see the updated version of this video - link in description
thanks for the video. but what does this mean practically? what difference will I see and feel between these in terms of performance?
+sillydillydokieo more voltage = more power, more capacity = longer flight times.
Thanks
Thanks,most informative.
After joining the batteries (Parallel) can you charge them as a single entity?
I thought connecting the negative lead to the positive lead on the other battery together short circuits it? I need a 6s battery and plan on connecting in series. So can I do it like that without short circuiting it?
That's how batteries are connected in series. If you're still not sure after watching the video, get someone who understands electronics to help tomavoid issues. Best of luck
Great video. I want to connect 2 15ah 48v batteries-exactly same make and specs together, but the seller seems to think I will get problems doing this. Have you used these batteries on an ebike or such and how did they do? Any issues longterm?
Batteries are connected in series and parallel all the time, it’s how we get batteries with much higher voltages and currents. I’d listen to the seller though, they may know more than we do. Happy flying!
Ah ok, thanks for the information. I think the company are just trying to avoid being blamed if anything goes wrong, as the batteries would be identical-same brand specs, on a mid drive motor. They also say I shouldnt use the 60v 20ah battery they sell! But they sell it! Have you attached batteries together on ebikes or scooters in parallel? Any issues?
I see the video is old but it worth a shot.... I have 2 - 3 cell batteries with a 12 gauge wire and a parallel connector with 14 gauge wires will that be a problem?
Please see the newer version of this video that covers a lot of the common questions I had on this one.. Best of luck!
can i connect two different brand different power (mah) and different discharge rated batteries in parallel??
Not recommended. Always try and use the same capacity and C rating packs when using in parallel.
Happy flying!
in parralale u can mix different capacity (but not different volts ) 1 ah+ 3 ah + 10 ah = 14 ah and if use 7.5 ah ( 50 % of total capacity ) and u disconnect them each pack will still have 50 % of their capacity that mean the 1 ah battery with be remain with 0.5 ah , the 3 ah will remain with 1.5 ah and the 10 ah will have 5 ah still remain ,, many people believe that the smallest will die first ,,, ,, it's exaclty the opposite in serial it's could , but not in parralale ( serial can't mix different capacity but different volts can ,, if u mix different capacity in serial the value of u pack is the lowest value of the smallest pack in serial 2000 mah + 3000 mah , = 2000 mah , u can't use the 1000 mah remain bcuz the other pack already to 0 mah , it's will die ,, but u can disconnect it and use ur pack alone with his 1000 mah remain but not with the empty pack ) hope u get it
pochul Although thats true, it is not necessarily the best solution, for complicated practical reasons, it is better to use the same cells and manufacture so that differences in the chemistry for them does not cause issues. (which may cause differences in the internal resistance, charging curves, thermal characteristics, etc.) Point is it can be done, although like Painless360 says, not recommended. Only Macgyver is allowed to do that! :)
Instead of using connectors like you have can I just solder the positive of one battery and the negative of the other battery together and be left with a positive and negative?
You could..
Thank you this was very informative I have a bike I’ve been building the last couple months and I have to hover board batteries both 37 V and 20 A and I’ve been trying to figure out if I can connect both positives and negative’s together and then charge both of them together as well as discharge as they don’t have a second set of connectors but really just a positive and a negative
If you do that, you will fry your batteries
This is a long shot hope you see this… so if I connect 2 3s 2200mah lipos in parallel… what should my osd read for mah?? Do I set it for 4400mah or 2200 mah ??
For batteries in parrallel, the voltage stays the same, the current and available capacity increases.... Happy flying
@@Painless360 thank you love your channel ❤️❤️
hello great video, i want to connect several lipo rc packs together for a ebike build but i want know do i remove each bms chip from each pack to install a big bms overall or do i just run the lupis with no bms and use a balance charger? if you help that would be fantastic
No idea, the packs I'm using here are not chipped. Best of luck!
Perfect thank you, I am looking at two extra 2s lipos 1200 mah 30c and we all love as many extras as we can get it will be a 4s for my quad, this is perfect thank you.
Hi nice video. how safe is this method as i like to use it for my ebike. Thank you
It's the same for any battery but you need to be careful when connecting any calls in parallel or series..
I have two 1400kv motors and two 2200mah battery.....so I need more flight time so I should connect them in series or parallel ....plz reply ASAP
See my endurance builds. More mah is what you need....
Hello. I have a question. I have several 6s 5200mah 50c packs and will be needing 8s soon. The ESC connector has a loop connector connected to the 2 ESC leads which would normally have two 4s packs connected to each. Would it be possible to just buy some 2s packs that are the same brand, mah, and C rating and combine that with the 6 to get 8? Ive asked this in another forum and got mixed answers. Some said NO WAY!! And others said its no different than combining two 4s packs to get 8s. Thank you
Thanks for this video it will be very helpful when I'll be connecting second battery to the Scooter. Just one question if you don't mind. Will different length of the cables connecting batteries to the controller (one battery in the floor next to board other one on the handle bar) cause some troubles?
Cable length on something like a scooter shouldn't be a problem. Best of luck
Hi, just watched your video and it’s very helpful, I have a question if you could help? I have a cctv test mointor which the battery doesn’t work properly, on the charger it said 12 v in to charge but when I do that the charger get very hot and doesn’t charge properly, when I took battery out it looked like it was 7.4 battery that was in series, do I need use a 7,4 battery charger as original didn’t come with it , also the cctv mointor has a 12 v out and confused how that works?
Tricky to comment without the specifics of the monitor you have but that sounds like there is an issue with the charger, charging circuitry or battery. You usually need a higher voltage from the charger to push the current through the battery you're trying to charge but if its getting hot somethings wrong.. Best of luck
Thanks heaps for these videos, very easy to understand. Quick question for you, I've got a FPV/aerial recon plane using a pixhawk clone and I want to extend my flight time. If I connect two 3S 2200mAh batteries in parallel obviously battery voltage output will be the same at 11.1V however for the sake of setting up my battery monitor in Mission Planner, I will specify a capacity of 4400mAh? i.e in parallel voltage does not multiple but capacity (mAh) does? Thanks!
Nick Kilroy Yes.
Thanks!
which setup would drain the battery faster the series or the parallel?
See the latest video link in description
great info sir 👍 quick question i have a 3s 65c 5000mah lipo it's 3 to 4 months old but only used 3 times then put into storage voltage. could i buy the same 3s and use it in parallel with the 3 to 4 month old battery that was used 3 times
You could but watch how things go..
Painless360 it was used 3 times when first purchased new from hobbyking,then put in storage voltage and been sitting in a cool dry place ever since, i was just worried its not going to perform aswell but it reads 3.80v per cell
il try and see how it goes thanks for your time
in the race competition, we have to change the battery as the track is long, and they have to keep the video signal. im planning to use parallel XT60 method. However, is it safe enough to plug in the different voltage battery? e.g. when swapping 14.7V landing, keep plugged for video signal, and plug in 16.8V new battery. then take out the old 14.7 V. (probably few seconds that both battery connected each other)
Is it a fairly safe way and wont damage the battery? as it is a simple XT60 connected into parallel, i dont think there is limit of current.
If you mean plugging in a battery in parallel with a very different voltage, then that's a bad idea.
If I was just looking for a longer run time, which would I do?
Parallel. See the later version of the video... Link in description.
@@Painless360 Thank you!
I have 2 lipo batteries 25c each. if I'm going to connect them in series will they go 50c in total?
It's there a way to use the balance lead to power two items simultaneously? I want to power an immersion rc FPV transmitter and also a low voltage battery alarm too. I'd prefer to avoid wiring my tx into the breakout lead so I can readily move it to it to different models.
Thanks in advance for any guidance.
Yes you can, connect both of the things you need to power to the outside pins of the balance tap connector to get 12v out of the pack (assuming 3s). Using the balance tap also allows you to pull lower voltages out of a larger LIPO too (i.e. connect just to two of the 3 cells in a 3s lipo to power an item that needs 7.4v.
Be careful not too pull too much power and be more careful to balance the packs if you are only connecting to some of the cells in the pack.
Hope this helps.
Painless360 i am whondering how far i can drain a lipo can i drain both 5000mah packs to 95% i know you cant go to 100% discharge but 90% to 95% shoud be ok because the packs are thunder power 7s with 70c burst rate so it will tax them less this is for a trex 700e dominator because the lipos disturbingly fit lol so i am going 14s so i can do mild sport flying i am trying to get my model under 5kg with lighter upgrades from kde plus lighter ceramic hybrid bearings plus going with a kosmik 200amp and a pyro 750 560kv competion motor which is lighter with plenty of grunt plus cutting and shorting down wires aswell plus cutting 1inches to 2inches of wire holds a gram or two lol plus steel abec 7 bearings weigh more than ceramic steel hybrids so losing quite a bit of weight helps i like longer flight times plus my hs is 2000rpm which is plenty of power for me i am not a stick banger reason you have more chance of killing your self plus taxing lipos which cant handle your flying style plus kde upgrades are air craft grade alumium which is stronger and lighter than stock so i will see my model drop weight under 5kg
Hi Jonathan, you should plan to pull no more than 80% from a LIPO pack regularly. Taking more starts to damage the pack physically and effects its performance. Plan to pull 4000mah from a 5000mah pack for long life and a margin of safety.
Hope this helps, happy flying!
One question does more volts mean more power? Or does the only thing that matters is Watt hours?
Khmer kid No, volts is volts ;)Power is measured in watts and watts is volts x amps. So if you have a 150watt motor as you increase the voltage the current is pulls goes down..Hope that made sense.
Thanks for the quick response, no just asking because I planed on purchasing 3000w mid drive and the I asked owner whats a good recommendation on the battery I should use and he told me to use 2 48v 12ah battery's in parallel to get 48v and 24ah and i was just thinking how is 48v strong enough to push a 3000w motor seeing how all the top brand bikes use 70v and up.
what should i use,parallel or series for gel blaster
2nd question. Is there any negative effect on serializing a 4s with a 5s of same caliber ??
Higher the 's", higher is the voltage. Shouldn't parallel connection of two 2200 mAh 3s batteries give 4400mah 3s as parallel connections ensure "same" voltage output across terminals?
Yes, that is correct. As far as I can see, the video does not contradict this, but it (sadly) doesn't mention the change in capacity.
Great explanation! Everything was clear right to the point!!
have a question I have a e-bike and I have two 36-volt batteries hooked and serious these batteries I have are no more than maybe two months old and I bought a brand new one thinking that what solved the problem and it didn't but I will hook these batteries up in series and put a load on the bike like going up the hill at half throttle I will be halfway up the hill and the votes in the battery were dropped down rate in front of my face so far the bike were cut off and then I would have to unplug the plug replug it and it will be okay until I put another load on the battery and then that would happen again could you please let me know what the problem could be
As usual your videos give me the exact information I needed plus a couple new nuggets! Thank you so much!
Which one is better to fly longer series or parallel?
Both potentially. If you're not planning on changing the ESC, motor and prop for maximum efficency at the higher voltage then parallel is the best bet..
@@Painless360 Thankyou.
when you place multiple batteries for an r/c car, does the battery C rating has to match? example if I used a 2S lipo 25C plus a 4s lipo 50C rating to have 6S lipo is that ok?
or would both batteries have to have 50 c rating?
Please see the later version of the video linked in the description. It answers a lot of the common questions in this comment section..
which system of this two will help to increase DC motor rpm and torque also....?
More voltage equals more RPM. If you want different torque, look at changing the motor... Happy flying
thank you sir for your very understandable well spoken definition of power
Can you do this with NiMH?
Charging as well?
So if I understand correctly parallel will accomplish more range and more operating time @ the voltage of one battery and series will give more volts or more punch or Higher output demands and the mAh of one battery?
Both provide more useable energy for the model. It's how that's available to the model that changes. The higher voltage will turn the brushless motors faster so you do need to reduce the prop size normally. See the newer video on this topic for more details.. Best of luck!
I have 4x 30amp ESCs, so theoretically together they will be capable of drawing 120amps. I was taught that whatever battery I choose, it must be able to supply those 120amps just to be safe.
So, suppose I have a 4S 2200mAh 30C battery. On its own, it will not be able to meet that 120amp safety threshold that my ESCs require (22.0 x 3.0 = only 66.0amp). Now, if I run two of these in parallel, is it correct to assume 44.0amp (capacity of 2 batts in parallel) x 3amp = 132amp (safely exceeding the draw that 4x 30amp ESCs could ever make)..?
+K Khalifah yes, but you can get high discharge lipo batteries now to do just this. 65 and 75c packs are easier to find. Best of luck!
K Khalifah
Hi mate great video I have a qestion about connecting parallel lipo batterys to a drone the lead I have made has two battery connectors an the connection to the drone is soldered to the board is it ok to connect one lipo battery at a time on a parallel lipo setup.
Personally I'd connect both together and then plus them into the model. It shouldn't matter but be careful. Best of luck!
Can you run two 6 cell 7.2 2000mah battery packs that are in a series circuit into a parallel circuit? Or will that cause problems? Basically asking do the batteries in a parallel circuit have to be single cell?
See the later version of this video (in description) for where I cover that exact topics. Best of luck!
I'm looking in to getting the "Cirrus SR22T 1.5m BNF Basic" but I want to get some good battery life out of it, I'm thinking of getting 2 "Li-ion 4S1P 14.8V 3500mAh ENDURO Advanced Lithium" Batteries and joining them but it adds to about a pound of weight to the already 3.6 pound plane, how well would the plane be able to handle that extra pound? Thanks.
Difficult to answer as I've never had one. But that sounds like an awful lot of additional weight for that size model...
'Guess I'll need to do some checking around. Thanks for the quick reply.
Hi Painless, As usual a good video. Only thing I am missing (or haven't found in an other video of you) is:
I have an S500 which requires a 3s battery, I want to buy two 4500ah 3s batteries and usually use them in parallel. I assume i need identical charge state (being best for the battery). But can I use them individual as well and then use them in parallel again?
You will. Watch the weight though as that will be a lot heavier than one pack.. Best of luck!
I have an electric kick-scooter (e-twow master) and I want to make it faster. The ESC on the scooter can take up to 50V . The stock battery is specified at 29.3 V when charged and has a capacity of 8Ah. I need a LiPo battery to wire it in series with the main one. What battery should I use ?
+Tantareanu Jimmy this is a little outside of my experience. But you'll need something that means the overall voltage will still be below that 50 volts maximum that the ESC is rated for.I believe places like Hobbyking sell things like this now too. Best of luck!
Thank you for the video, very helpful.
I'm planning to buy a 6S 16000 mAh battery to power a ~8A motor for a robot I am building... I tought it could power it for 2 hours but it has 10C written too...so does it mean the battery is capable of 160A? Can I power my motor for 20 hours with that battery? Sorry if it sounds dumb but I'm new in LiPo(s) Thank you again
The videos in the 'Introduction to Remote Control' covers many of the basics. a 16000mAh pack will provide 16 Amps for an hour, 32 Amps for 30 mins, 64 Amps for 15 mins etc. The 10C on the pack means that it can deliver 16,000mAh x 10C = 160amps max. Not sure how big the wires on it are! :D
@@bldjln3158 2 hours
Can you use a 4000 mah battery and a 5000 mah battery in the same car like a xmaxx or will this destroy something??
I am new to electronics. I am building a portable Bluetooth speaker and wish to have long run time. like plus 12 hours. the amplifier module uses 3.4 to 4.2v.
Could you recommend a charging module with protection?
would 4 18650 @ 3.7v in parallel or in series with a step down transformer.
I am new to this sup I am not sure if I amasking the right questions.
This is a little outside what I support here, you'll need a voltage regulator to get that 4.0v you need for the amp, once you know how much current it uses then you can figure out the capacity of the battery you need for a 12h operating time. Best of luck..
Painless360
thank you.
How to properly charge two parallel lipo? Do we charge them one by one?
Yes.
@@Painless360 Thank you!
Halo, great video. I have some question, what if i use 2 battrey with different mah but same voltage in paralel mode. Will it work fine? Or any suggest and what? Thanks.
I wouldn't as one of the batteries will be empty first.. If you are going to do this, start with identical packs until you have a better idea of the principles. Best of luck
I got that same exact connector today. Its awesome to use my two 7.4 volts that I hardly ever use anymore because I bought a bunch of 3s batteries.
So although you probably mentioned this throughout the video, i've got a short attention span so i can't be bothered if you don't mind but should i use paralell or series to maintain the longesyt run time (double the mah), as i heard somewhere that one doubles the speed and the other doubles the run time.
Thanks
+Andrew Smart answered in the video ;)
I am building a battlebot and I was wondering if there was a way to wire up two batteries in series to only give power to the weapon motor and weapon, and have a singular battery give power to only the rest while being hooked up all to one receiver and motor controller?
You could. You'll need to watch how the power from the principle battery is pulled as it will get lower faster and think about the low C rating for the LIPOs as you will want the power to be there with minimum drop. Best of luck!
Painless360 Will do and thank you so much! We actually got it working today!
Great news! Best of luck with any upcoming battles!
Thanks for this video, very useful and simple. I'm interested in making a 12s6p battery, could I make the 12s6p battery then connect a couple of lipo batteries in parallel to increase the capacity?
You can always connections mode packs.. see the updated later version here this video... happy flying!
Will adding a parallèle L’iPod cause more wattage and this burn the motor or circuit !?
It doesn't work like that. See the newer version of the video linked in the description.. Happy flying
Is this better or worse for the motor and does the c rating double?
Having more power available the batteries isn't a problem. Increasing the voltage above the rating of the ESC and motor are.. Happy flying!
Hi, I'm using 2 - 6s , 5000Mah LiPo's in series for a total of the 24volts you mention but my flight times are short. (130c rated per EDF MFG recommendations)is it possible to add a third battery in Parallel after the series connection to gain more Mah and thus longer flights? Vince
+Vince C not like that. I'd look at upgrading to a battery that's the right voltage and capacity for the job. Best of luck!
Hi, I intend to make a portable usb battery bank for charging my mobile phone using 3 single S LiPo 3,7V batteries in series I have, so it would give me total output of around 12V at 3S that would be stepped down to 5V. However, they all have different mAh and C ratings. One has 500 mAh 20 C, the other 600 mAh 25 C, and the third one 2000 mAh 1C.
Could I charge these three batteries all at once treating them as a single 3S battery, or should they all be charged separately? Btw, I'm not an expert in LiPo batteries and any suggestions are welcome.
Cheers!
+Viktor Božičević I would stay away from it then. Those batteries would not work well together and a 3S LIPO pack is very inexpensive. Best of luck..
Since I already have these batteries laying around I used for my RC drone that I accidentaly crushed on the road last year because I flied it out of range, I really want to put at least on of these batteries in good use. Let's say the one with most capacity - 2000mAh @ 3.7V, but then use some kind of step up converter. Also connect a low voltage buzzer to it.
Cheers!
The performance will be the same on 40am 12.4v or 24.8v 20amp?
Depends on what you mean by performance. That is the same wattage (V x A) but the[performance of the motor and prop has just as much to do with how much thrust is produced..
@@Painless360 so the motor performance will be same on both? Like speed and torque?
You would different motors and props.. See my motor testing I did in the efficiency quad builds to see why.. Best of luck!
Hey, I'm wondering does a Electric R.C. motor run faster with more Volt or more AMPs. Say a 11.1 is running a electric r.c. motor that can handle up to 35volt. What would make it run Faster VOLTS or more AMPs ?
If you watch my other video - ua-cam.com/video/uLutMoh4Ttg/v-deo.html - you'll see that the speed of the motor is directly related to the voltage. The motor will draw less current with a higher voltage too. Be careful to reduce the size of the prop used when you increase the voltage.
Happy flying!
just a quick question the lg 18650 battery from ebay (Lithium Ion ICR18650 MF1 2150mAh ) 20x cells each cell is 2150 ah. The spec sheet says Max. Charge Current 1.0C(2,150mA). So when you have this pack 36v 10s 2p what is the maximum ah current can you charge it 2ah 42v current or 2ah current x 20 cells ~ 40 ah current at 42v. Now if you have 3x 10s 2p in parallel which is 36v 12.12 ah what is the maximum ah current you can charge thats 60 cells is it 60 cells at 2ah current which is 120 ah current for 60 cells or just 2 ah for 60 cells using cccv charger
Thank you very much
See the Li-Ion battery video I did. I've only used those cells in pre-made packs and in the Fat Shark battery adapters.. Best of luck!
Hey there this has given me great understanding . I want to connect 2x36v in series for my ebike to run a 2000w hub motor . On the series diagram in this video could you point out where you would have the ignition and the charger point connect to ? Cheers
+mert tanay depends on the voltage they need. If it's full pack voltage connect them to the output. Best of luck!
very helpful video sir.i have one q,,,
i want to increase my quad flight time..and which way should i connect my 2 lipos??
+Dilshan Perera What is your guess after watching the video?
its parallel ..right?
Yep - same voltage but the mAh capacity is added together.. Best of luck with it!
thanks man
appreciate that
Look, if you connect them in parallel, you will be able to get more flight time, bit it won't be as fast as if you connect them in series, so it's basically like this:
Parallel: more flight time, more heat on the motors cause of the amps
Series: more speed, less heat on the motors.
When in parallel what will happen to the balance leads? Do they need to be as well in parallel when one is ready to fly his model.
hello Painless360, i have a question, i have a drone syma 5 that works with a lipo battery 1cell 3.7 volts, 500 mAh, and also have a drone JJrc h8 that works with a 2 cell 7.4 500 mAh and those batteries has a balancer conector, can i repalce de 7.4 volt battery for 2 batteries 3.7 volts making a conector in serie? is the same than the stock 7.4 volt? does not affect if theres not have balancer conector? i will apreciate your answer, for me is more conveninete for price and time to chage use the 1 cell 3.7 volts batteries, thanks.
+IMPORTECHML You can but make sure that the mAh rating of the 1cell batteries are the same as the 2 cell you're using. I would recommend investing in the right batteries for the model as the extra wires and connections all add weight and points of failure to the model and some of the smaller models are very sensitive to extra mass. Best of luck.
Hi, sorry for the silly question (love the channel btw) I have two 11.1 3s 2200 mah batteries I would like to put as parallel as I would like a long flight time. I work it out to be 66amp would I have to get ESC's rated to 70A?
Thanks
Matt
In parallel it would be a '11.1v 6S 22.2v pack..
Painless360 no Lee that would be in series in parallel you double up the max amp draw and the capacity
Great Video! I think I understand. So I have a quad copter. I have two 1800 mah 100C batteries.
If I run the batteries Parallel, I'll get the same amount of power to the motors and I'll get twice the battery life?
Am I right? It would be like having one 3600 mah 100C battery?
Yep! :)
It is necesery to use BMS like in LiOn batteries in xSxP packed? Or i need just a good charger?
BmS?
@@Painless360 bms battery management system