I keep making the mistake of watching educational RC videos of other channels, then finding a hugely superior presentation of similar subject matter here on RCModelReviews. Thus is the best explanation of lipo I have found. Awesome channel - great job!
Great video Bruce. I have been flying for a few years now but now and again I still come and watch your videos to remind myself the way things should be done. Never hurts to give yourself a reminder now and again, especially where lipo battery's are concerned!
I'm new to the hobby. I started off with toy grade drones and now enjoy fast carbon flying machines along with stable GPS video machines. I love the hobby and appreciate all of your extremely well made informative videos! I really thank you so much! Your a great teacher and one really smart dude. I love technology and electronics. I feel like a 40 year old boy sometimes. Don't ever loose that. Thanks again!
Wow, I think you just saved my (first lipo battery's) life! I'm very new to RC flying, and lipo batteries as well, so especially the part about storage charging your lipo's was an eye opener! Thank you for this very informative channel of yours! ;-)
Thanks Bruce for sharing your knowledge. I'm a noob to RC the got bit by the multi-rotor bug a few months ago after watching some FPV videos. You and many others have been a great help at climbing this RC mountain of technologies. Much appreciaton from this Yank in sunny California.
I really enjoy your videos. Very educational and good sense of humor. I feel like attending an electronics classroom with an excellent teacher. Thanks a lot.
Thanks so much for making me aware of the battery alarms. I am making sure all of my friends have these . Thank you so much for your fantastic information, I have been watching your videos for hours !
Great tutorial Bruce....in fact you are a natural teacher. State your objective....do your presentation.....then tell us what you told us. Couldn't be better than that. As for connectors....I saw early on that these things were going to be a problem for me....so I use the Anderson Powerpole connectors.
Tnx a bunch! I just got a delivery of eight 5000mah Hyperions. I didn't know about the storage charge, so I guess u just saved me a buck load of cash!!
Hi Bruce, another wonderful video!!! I think you should also talk about the connections between lipo packs in serial and Parallel and how they change the values of voltage, milliamps and the c rate in each of those configurations .... thank you!!!
Wow! Excellent video. You taught me a lot that I didn't know being I'm new to quadcopters. I have 3 & didn't know this important info about lipos. Thanks again!
how much runtime will i get from a 4400mah on 30c 6.6volt average use for servos . watching the video made me feel like i was back in school, in one ear and out the other .
thanks Bruce learnt heaps off this video about Lipos... like how not to burn the house down ! had no idea about fully charged Lipos sitting around ! Thanks again
Very good video, informative and erm.... energetic speech, that stops me from nodding at my computer screen when learning about these particular technological subjects. A skill that is very sparse. Thank you :)
Thank god i found this video. I wanted to scratch build some models but i realized i just didnt know enough about rc plane electronics and batteries were one of the topics i was fuzzy on.
Thanks Bruce ! Very informative and well done sir ! I'm a noob and need to learn so much my head hurts. I haven't yet bought my first transmitter and receiver and ESC and servos, etc. etc. etc. Not to mention my first ARF ! But in any case you are a Gentleman and a Scolar.
Nice job, I am just getting into using lipos and this video was a great learning tool. I will definitely be buying a few more battery testing devices . Thanks
Hey Bruce, great videos! I've learned more about RC from your videos and site than the rest of the internet combined (last week I finally donated $50, which is way less than I owe you for all your great videos)! Anyway, have you ever considered doing an "All About" video covering brushless motors? That's the one area that I still find massively confusing about electric RC -- I'm lost as to when to use high vs. low kv motors, when to use inrunners vs outrunners, and the myriad tech specs!
Cool video, gives me some insight to hobby batteries. It would be nice to see one on charging and discharging also battery charger selection. If possible.
Thank you so much for your videos - I have learned so much! I am really looking forward tot he videos on ESC's and such. What has me stymied is the relationship between kV rating, prop size and wattage. I find myself just trusting others trial & error and experiences, but I know there must be a more logical process for selecting and matching prop/motor/ESC's and batteries beyond, 'It worked, moved and didn't burn up...' Thanks!!
I wish you had talked about the wires coming out of the various batteries. The large black and red wires are obvious but the other set of wires. What are those for?
No mention of cold storage? I did not see any recommendation about suitable chargers although charge rate is well covered. How do you know what connectors advertised batteries have?
Anyone know where's the upcoming video he talks about? Where he was going to talk about matching your batteries with your motors, escs and props. I can't find it.
Very right question, it is because the capacity is actually not 1 amps as Bruce says, the capacity is 1 amp-HOUR. Energy capacity should really be stated in its proper unit joule or alternatively in watt-hour. Using ampere-hour as a capacity indication complete forgets that the voltage (LiPo cell count) also have to be included to calculate the energy in the battery pack.
Great helpful videos. One question; why is there a difference between the voltage stated on the cover of a battery, i.e., 3S Lipo is 11.1 volts(3 x 3.7 volts). But when you measure the actual voltage of a fully charged battery each cell is right at 4.2 volts. Why isn't the 4.2 actual voltage used in all the calculations?
thnaks for video have question why some lipo battery like 3.7v when we charge them they go over heat puff but other battery the same voltage and work fine
Kabala FPV said in one of his videos someone told him they only go up to 70c max no matter what number a manufacturer stamps on them that might be higher, is that true?
@RCModelReviews I think we all agree about internal resistance hurting the efficiency more, when current drawn is higher. But the valid point that hot4plasma was trying to make, is that the largest numbers on these battery pack labels are in milliamp-hours (or amp-hours), (as opposed to just "milliamps" which you say at around 1:14 ). Because the quantity primarily indicates the *charge capacity*, not current rating. The "1C" spec is defined as capacity divided by 1 hour. To be pedantic.
Did an esc built in with a over discharge limiter in it? If it's not what would happened if the current goes below the recommend when the battery is in the sky??
I sometimes charge a bunch of batteries the night before... then the next day, the weather turns to crap and crap for several days after that. I'm wondering how long I should keep them at a full charge before they get damaged. I heard at AllThingsThatFly you shouldn't keep them charged for more than a week. What say you Bruce?
Thanks 78E. I recently bought a iCharger 4010 Duo and I see what you mean. Only, does the 1S cells need to be storaged on 3.7 somewhat Volts? like the 2, 3 and so one cells? Or is that only necesary with batteries with more than one cells?
Hey Bruce. I don't suppose that my Accucell 6 is putting the energy back into my charging battery as it reduces the Lipo cells to storage level is it? Seems unlikely.
can you charge/discharge through the balance lead, just curious I noticed the battery/charger that came with my Runner 250 advanced. it seemed to be doing just that, except for the discharge I'm guessing.
is there any way to test if a lipo charger is working properley without actually having a battery? my lipos caught fire while charging (was actually my fault, batteries were swollen and had a broken balance cable). i bought new batteries but dont know if the charger still works, and am afraid to connect the new batteries to the charger
after flight can we charge batteries when their voltage drops to 3.8 like that or else i need to drain fully upto 3.5 by flying for more time like that for better life of batteries.
Wot ho Bruce, Thanks for the Vid, I have two Batteries 2200mah lipos for the Blenheim which I am in the throws of building I have "all the gear and no Idea" electric is not my bag. The batteries have been charged buy Moi, not knowing of the long term affect.. On the charger which I purchased it has a discharge setting , Now my question is How does one use this or can this setting be used for the discharge of Lipos. Hugh
I`m a bit confused. I never make the call on the C charge rate on my lipo packs. I plug them into my balance charger and it does the rest. A 3S pack usually takes 65 minutes to fully charge no matter the mah size. If i have a 1300 mah lipo, i will choose 1.3 amp charge, does this mean i charge the pack at 1 amp? What am i missing?
I chared my battery to go fly. 3S 1.3, 15c.and a couple of larger batteries. Didn't get out to fly and now have 4 batteries fully charged. To get them to storage charge using a 4 button charger do I need to discharge first then storage charge after, or just program to storage charge only?
Thank you for a very educational video. One question however, I fly also small hrlicopters like the WL V911 on 1 cell batteries, 3.7 Volts. How do you store those kind of batteries? And how do you measure that voltage, there is no charger with 2 leads connector except for the ones with the heli pack and those are very simple. Thank you, Willem
I have a 4s,14.8v,3200 lipo for my t-28. my charger does not have a discharge mode. how can I get to storage voltage other than just running the motor on the ground? heat in the motor would be bad, would it not.
Hi , If my ESC draw 15Amps and the motors says Standard Current : 15-25A Max Current : 30A, so what quantity of amps does the motor and the ESC will draw from the battery? And i have a quadcopter, with 4 ESC and 4 motors, do i have to multiply the current from each, times the quantity of motors to compute the quantity of current (amps) that all the system will draw from the battery? Thanks for your time and amazing videos
Fernando Calatayud Zepeda First of all, your ESCs don't draw 15A, they can handle up to 15A when your motors draw from the battery and the max current for the motors is just a guide for you to not push them past that amount of Amps... Second, you need to either do a test on your motors to see how many Amps one of your motors pull at full throttle with the Voltage (Cell size) and prop size you want to use, if that's not possible, you can google to find out from other people's tests, but that's not as accurate... Once you know your max Amp draw, you can then calculate the C-rating you need... You take the max Amps your motor draws with the setup you want, let's say it's 10Amps, multiply it by the amount of motors you will use (4 motors = 40Amps) and then divide it by the capacity of your battery... Let's say you're using a 1.3Ah (1300mAh) battery, it would be 40/1.3, so you would need a battery with a C-rating above 30.77, so a C-rating of 35 would be the best to use...
thedavinator 37 just charge...electricity takes the path of least resistance so it "figures itself out" while discharging...unless you're discharging by isolating the cells (which is dumb) then you need to discharge each cell to the same voltage individually
I have a question about C-Raiting. How does manufacture determan the c-Rate? And how can one mesure the c-Rating ? I woud guess that it would be somting like at a sertain Amp draw it shoud only drop a certan %voltage ???
Well great job, where can I find one like your's? I have look at 4 or 5 but they are out of stock and do not have every thing on them like your's. so can you help a old man out? Have a great day!
This may have been asked already but here it is anyway. Someone told me that storing ur lipos in the refrigerator. That this would virtually stop any discharge. What do you think?
Hi Xjet - you may remember me from our exchange of puns regarding the power-lines on the park video of yours :P Quick question regarding this charger business: I have a Fusion Ethos LX41B Pro. It only charges, however - no discharging. I'm thinking this discharge/storage voltage stuff has gotta be important so wud u recommend getting the Turnigy or similar despite me already having the Ethos? Thanks
GranVlog i tried it on my miniquad with kiss 18amp esc and one of them exploded... i thought the esc would only draw as much as it was capable of and not more..
+GranVlog In case you haven't found your answer yet, you should be able to draw (1.8a X 75)= 135 amps for cruising about. At burst you can draw up to (1.8a X 150)= 270amps If those C values you have given are correct, that is a very meaty and powerful battery you have there. Must have cost an awful lot. So its your amperage, multiplied by your c rating. Edit - Im assuming you mean 1800mah (milli), not 1800Mah (Mega). Otherwise you could power a planet!!!!
Yea its subtle but in certain applications it can be essential. Esc's just do that sometimes. It is advised you keep a few spare for this reason. Some people order 4 to make a quad copter and 1 just simply doesn't work. Annoying and disappointing but just the way. Your battery's ability to deliver the amperage will not pop your esc. Think of it like a weight lifter. He may have the ability to lift 200kg, but that doesn't mean he wont be able to lift 2kg. Its just that it isnt much of a load for him. he COULD do more if NEEDED. Also just go over your wiring again checking for short circuits. Hope you sort it!
dang.. now i know why basically all my lipo's are puffy.. i havent discharged them enough when flying, and i have allways left them after flying for the day.. so all batteries are probably about 20-30% used... and i have allways charged at 2 amps.. but i dont think i own a less than 2 amp battery... can a puffy battery explode on me when flying, or will the cells show different voltages before i get to a critical point in a batterys life?
Bruce, does that wattmeter work OK. I have one the same and its gets confused when there is digital stuff at the other end. Like my quadcopter at idle reads up to 20A. Its OK with non digital stuff like lamps and heaters. Perhaps I have a Friday duffer.
I keep making the mistake of watching educational RC videos of other channels, then finding a hugely superior presentation of similar subject matter here on RCModelReviews. Thus is the best explanation of lipo I have found. Awesome channel - great job!
Great video Bruce. I have been flying for a few years now but now and again I still come and watch your videos to remind myself the way things should be done. Never hurts to give yourself a reminder now and again, especially where lipo battery's are concerned!
I'm new to the hobby. I started off with toy grade drones and now enjoy fast carbon flying machines along with stable GPS video machines. I love the hobby and appreciate all of your extremely well made informative videos! I really thank you so much! Your a great teacher and one really smart dude. I love technology and electronics. I feel like a 40 year old boy sometimes. Don't ever loose that. Thanks again!
Wow, I think you just saved my (first lipo battery's) life!
I'm very new to RC flying, and lipo batteries as well, so especially the part about storage charging your lipo's was an eye opener!
Thank you for this very informative channel of yours! ;-)
Thanks Bruce for sharing your knowledge. I'm a noob to RC the got bit by the multi-rotor bug a few months ago after watching some FPV videos. You and many others have been a great help at climbing this RC mountain of technologies. Much appreciaton from this Yank in sunny California.
STILL the best Lipo video I've ever seen. Bruce, You Da MAN! Many Thanks from the UK.
Always love finding vids from your ch that I haven't seen yet. This was in my recommended list.
You have explained everything the best I've ever heard. Grateful to have found your channel. Appreciate the knowledge! Take care
I really enjoy your videos. Very educational and good sense of humor. I feel like attending an electronics classroom with an excellent teacher. Thanks a lot.
I agree Bruce, a Lipo battery comparison between brands would be great and is much needed in the RC Flying hobby.
Really good! I've been keeping my batteries at full charge in storage :/ I really learnt something here
Best video I have seen yet explaining LiPo batteries. Thank you!
Thanks so much for making me aware of the battery alarms. I am making sure all of my friends have these . Thank you so much for your fantastic information, I have been watching your videos for hours !
Thank you for the videos... I got a degree in electronics engineering and you remind me of one of my favorite instructors. Enjoy
Great tutorial Bruce....in fact you are a natural teacher. State your objective....do your presentation.....then tell us what you told us. Couldn't be better than that.
As for connectors....I saw early on that these things were going to be a problem for me....so I use the Anderson Powerpole connectors.
Tnx a bunch! I just got a delivery of eight 5000mah Hyperions. I didn't know about the storage charge, so I guess u just saved me a buck load of cash!!
Hi Bruce, another wonderful video!!! I think you should also talk about the connections between lipo packs in serial and Parallel and how they change the values of voltage, milliamps and the c rate in each of those configurations .... thank you!!!
Bruce, you should be "required watching" before anybody does anything with RC!! Love your stuff!
Wow! Excellent video. You taught me a lot that I didn't know being I'm new to quadcopters. I have 3 & didn't know this important info about lipos. Thanks again!
how much runtime will i get from a 4400mah on 30c 6.6volt average use for servos .
watching the video made me feel like i was back in school, in one ear and out the other .
thanks Bruce learnt heaps off this video about Lipos... like how not to burn the house down ! had no idea about fully charged Lipos sitting around ! Thanks again
Thank you very much Bruce, you've helped me and two other friends (at least) to take care and understand our batteries much better.
i seen all the reviews on Utube YOU GIVE THE HOLE ENCHILADA .I MEAN YOUR THE BEST GUY ON R.C. THANK YOU ..
Thank you. As usual, extremely helpful for people getting acquainted with this technology. Appreciated!
Very good video, informative and erm.... energetic speech, that stops me from nodding at my computer screen when learning about these particular technological subjects. A skill that is very sparse. Thank you :)
Thank god i found this video. I wanted to scratch build some models but i realized i just didnt know enough about rc plane electronics and batteries were one of the topics i was fuzzy on.
Thanks Bruce ! Very informative and well done sir ! I'm a noob and need to learn so much my head hurts. I haven't yet bought my first transmitter and receiver and ESC and servos, etc. etc. etc. Not to mention my first ARF ! But in any case you are a Gentleman and a Scolar.
Nice job, I am just getting into using lipos and this video was a great learning tool. I will definitely be buying a few more battery testing devices . Thanks
Love this tuturial .. You are a great teacher. Good tips ! Thank you.
The "S" means the cells are connected in Series. ie. 2 cells in series + 2S = 7.4V :)
Hello Bruce
I watch all your vids and its great stuff and i found this tidbit really useful
keep up the good work
Brilliant video! You made it so easy to understand batteries.
Hey Bruce, great videos! I've learned more about RC from your videos and site than the rest of the internet combined (last week I finally donated $50, which is way less than I owe you for all your great videos)! Anyway, have you ever considered doing an "All About" video covering brushless motors? That's the one area that I still find massively confusing about electric RC -- I'm lost as to when to use high vs. low kv motors, when to use inrunners vs outrunners, and the myriad tech specs!
Cool video, gives me some insight to hobby batteries. It would be nice to see one on charging and discharging also battery charger selection. If possible.
Thank you so much for your videos - I have learned so much! I am really looking forward tot he videos on ESC's and such. What has me stymied is the relationship between kV rating, prop size and wattage. I find myself just trusting others trial & error and experiences, but I know there must be a more logical process for selecting and matching prop/motor/ESC's and batteries beyond, 'It worked, moved and didn't burn up...'
Thanks!!
Great video!! Helped me learn about LiPo batteries before I got my battery!
I wish you had talked about the wires coming out of the various batteries. The large black and red wires are obvious but the other set of wires. What are those for?
No mention of cold storage?
I did not see any recommendation about suitable chargers although charge rate is well covered.
How do you know what connectors advertised batteries have?
Anyone know where's the upcoming video he talks about? Where he was going to talk about matching your batteries with your motors, escs and props. I can't find it.
Very right question, it is because the capacity is actually not 1 amps as Bruce says, the capacity is 1 amp-HOUR.
Energy capacity should really be stated in its proper unit joule or alternatively in watt-hour. Using ampere-hour as a capacity indication complete forgets that the voltage (LiPo cell count) also have to be included to calculate the energy in the battery pack.
Great helpful videos. One question; why is there a difference between the voltage stated on the cover of a battery, i.e., 3S Lipo is 11.1 volts(3 x 3.7 volts). But when you measure the actual voltage of a fully charged battery each cell is right at 4.2 volts. Why isn't the 4.2 actual voltage used in all the calculations?
thnaks for video have question why some lipo battery like 3.7v when we charge them they go over heat puff but other battery the same voltage and work fine
Thankyou for your Detailed Explaination on Lipo Batterys !
Kabala FPV said in one of his videos someone told him they only go up to 70c max no matter what number a manufacturer stamps on them that might be higher, is that true?
@RCModelReviews I think we all agree about internal resistance hurting the efficiency more, when current drawn is higher. But the valid point that hot4plasma was trying to make, is that the largest numbers on these battery pack labels are in milliamp-hours (or amp-hours), (as opposed to just "milliamps" which you say at around 1:14 ). Because the quantity primarily indicates the *charge capacity*, not current rating. The "1C" spec is defined as capacity divided by 1 hour. To be pedantic.
and again a great lesson.
thanks to you i'm flying with a axn.
And still flying the Mikeys RC trainer plane.
I really love to fly that plane
Did an esc built in with a over discharge limiter in it? If it's not what would happened if the current goes below the recommend when the battery is in the sky??
Boss can u put a video on matching esc,battery,motor,propeller.
How to program an esc with Tx
I sometimes charge a bunch of batteries the night before... then the next day, the weather turns to crap and crap for several days after that. I'm wondering how long I should keep them at a full charge before they get damaged. I heard at AllThingsThatFly you shouldn't keep them charged for more than a week. What say you Bruce?
Great video Bruce! How about an unbiased test of all those brands?
Thanks 78E. I recently bought a iCharger 4010 Duo and I see what you mean. Only, does the 1S cells need to be storaged on 3.7 somewhat Volts? like the 2, 3 and so one cells? Or is that only necesary with batteries with more than one cells?
I was given one of the little lipo cell testers and had no idea it could alert me when I was running low. It'll now be flying every time am out.
Hey Bruce. I don't suppose that my Accucell 6 is putting the energy back into my charging battery as it reduces the Lipo cells to storage level is it? Seems unlikely.
can you charge/discharge through the balance lead, just curious I noticed the battery/charger that came with my Runner 250 advanced. it seemed to be doing just that, except for the discharge I'm guessing.
Does the internal resistance of the batteries dictate their C-rating?
By the way, the mAh means milliamp-hours, which is how much charge the battery holds. Great video!
is there any way to test if a lipo charger is working properley without actually having a battery? my lipos caught fire while charging (was actually my fault, batteries were swollen and had a broken balance cable). i bought new batteries but dont know if the charger still works, and am afraid to connect the new batteries to the charger
so if i have 2 11000mah batteries that are both rated for 5c charging what would i be charging the battery at if there in parallel
Great vid, do you have a video about matching brushless to prop esc & lipo???
after flight can we charge batteries when their voltage drops to 3.8 like that or else i need to drain fully upto 3.5 by flying for more time like that for better life of batteries.
Wot ho Bruce, Thanks for the Vid, I have two Batteries 2200mah lipos for the Blenheim which I am in the throws of building I have "all the gear and no Idea" electric is not my bag. The batteries have been charged buy Moi, not knowing of the long term affect.. On the charger which I purchased it has a discharge setting , Now my question is How does one use this or can this setting be used for the discharge of Lipos. Hugh
I`m a bit confused. I never make the call on the C charge rate on my lipo packs. I plug them into my balance charger and it does the rest. A 3S pack usually takes 65 minutes to fully charge no matter the mah size. If i have a 1300 mah lipo, i will choose 1.3 amp charge, does this mean i charge the pack at 1 amp? What am i missing?
I chared my battery to go fly. 3S 1.3, 15c.and a couple of larger batteries.
Didn't get out to fly and now have 4 batteries fully charged. To get them to storage charge using a 4 button charger do I need to discharge first then storage charge after, or just program to storage charge only?
You talk about a video on choosing battery for specific models, but I am not able to find it on your channel.
999
You say to store at 3.8 volts. Could you please tell me what is considered to be low voltage.
can i get a link to both those items the battery alert thingy and the other battery meter thing.
Tell me about using Lipo used on Land Vehicles? Brushless vs Brushed vehicles.
Help.... Thanks,
Great job explaining lipos. Thanks.
great info bruce, learn new stuff all the time.
Thank you for this video, now i will know how to make my lipos last, my 2200mah pack died about a month ago from waiting too long for his flight
if charging is through the skinny wires, then why do we need to hook up the 2 thick wires?
Its because you discharge them a lot faster than you can charge them.
S stands for "Series". The cells are arranged in series, which is a configuration approach.
I can't find your video on battery, esc, and propeller matching!
Question? For Arrma Kraton Blx would it be better to run on 2 - 3s lipo or 1 6s lipo battery? Thanks
if you charge a lipo at a high amount of amps will it affect the flight time?
Thanks mate. I took a lot of useful information from this 'old' video!
Thank you for a very educational video. One question however, I fly also small hrlicopters like the WL V911 on 1 cell batteries, 3.7 Volts. How do you store those kind of batteries? And how do you measure that voltage, there is no charger with 2 leads connector except for the ones with the heli pack and those are very simple.
Thank you, Willem
I have a 4s,14.8v,3200 lipo for my t-28. my charger does not have a discharge mode. how can I get to storage voltage other than just running the motor on the ground? heat in the motor would be bad, would it not.
You sound like Sir Hammerlock from Borderlands 2
Nice video
DUDE!
Now you said it I hear it too haha.
Fucking played that game for over 1000hrs.
You can have a 2S battery or a new prop if you kill a few bullymongs for him...
Can i charge one of this batteries while it is powering another thing?
You saved me lots of money, Bruce. Thanks!
So where did you buy this Battery Balancer & Watt Meter?
Hi, what is the brand and name of the first black battery balancer that you use in the video?
Thanks
Hi , If my ESC draw 15Amps and the motors says Standard Current : 15-25A Max Current : 30A,
so what quantity of amps does the motor and the ESC will draw from the battery?
And i have a quadcopter, with 4 ESC and 4 motors, do i have to multiply the current from each, times the quantity of motors to compute the quantity of current (amps) that all the system will draw from the battery?
Thanks for your time and amazing videos
Fernando Calatayud Zepeda First of all, your ESCs don't draw 15A, they can handle up to 15A when your motors draw from the battery and the max current for the motors is just a guide for you to not push them past that amount of Amps...
Second, you need to either do a test on your motors to see how many Amps one of your motors pull at full throttle with the Voltage (Cell size) and prop size you want to use, if that's not possible, you can google to find out from other people's tests, but that's not as accurate...
Once you know your max Amp draw, you can then calculate the C-rating you need... You take the max Amps your motor draws with the setup you want, let's say it's 10Amps, multiply it by the amount of motors you will use (4 motors = 40Amps) and then divide it by the capacity of your battery... Let's say you're using a 1.3Ah (1300mAh) battery, it would be 40/1.3, so you would need a battery with a C-rating above 30.77, so a C-rating of 35 would be the best to use...
Optamizm Damn, thanks a lot for the time i understand it very well now.
Fernando Calatayud Zepeda No worries :)
Are you supposed to balance discharge and charge or just balance charge? Thanks
thedavinator 37 just charge...electricity takes the path of least resistance so it "figures itself out" while discharging...unless you're discharging by isolating the cells (which is dumb) then you need to discharge each cell to the same voltage individually
what volt does traxxas low voltage mode stop it at
WOW, these are things I did not know about batteries that live in my house... thanks...
where can I find the explanation for matching the electronics to the models. What's the vid called or a link would be helpful.
Since voltage x amps = watts (power), am I right to believe that a 3s 4000mah, 45c lipo would generate more power than a 3s 2200mah, 45c?
I have a question about C-Raiting.
How does manufacture determan the c-Rate? And how can one mesure the c-Rating ? I woud guess that it would be somting like at a sertain Amp draw it shoud only drop a certan %voltage ???
fotoreb it's a spec...you don't measure it you abide by it
I don't believe 3 guys didn't like this video, Bruce is great!!!!!!!!!!
How do LiFe batteries compare to LiPo? Can I use something like the Turnigy nano-tech 1700mAh 2S1P 20~40C LiFePo4 Receiver Pack in lieu of a LiPo?
Well great job, where can I find one like your's? I have look at 4 or 5 but they are out of stock and do not have every thing on them like your's. so can you help a old man out? Have a great day!
This may have been asked already but here it is anyway. Someone told me that storing ur lipos in the refrigerator. That this would virtually stop any discharge. What do you think?
Hi Xjet - you may remember me from our exchange of puns regarding the power-lines on the park video of yours :P Quick question regarding this charger business: I have a Fusion Ethos LX41B Pro. It only charges, however - no discharging. I'm thinking this discharge/storage voltage stuff has gotta be important so wud u recommend getting the Turnigy or similar despite me already having the Ethos? Thanks
Thanks for the video Bruce. I have always wondered: If a pack has a capacity of 1 amp, how can it deliver 25 amps for an extended period of time?
Wow, total new guy here..that was awsome! Thank you, from a new subscriber.
so my battery that is 1800Mah have a c rating of 75.
and a burst of 150. does that mean the burst Amp will be 27 amp ?
GranVlog i tried it on my miniquad with kiss 18amp esc and one of them exploded... i thought the esc would only draw as much as it was capable of and not more..
+GranVlog In case you haven't found your answer yet, you should be able to draw (1.8a X 75)= 135 amps for cruising about.
At burst you can draw up to (1.8a X 150)= 270amps
If those C values you have given are correct, that is a very meaty and powerful battery you have there. Must have cost an awful lot.
So its your amperage, multiplied by your c rating.
Edit - Im assuming you mean 1800mah (milli), not 1800Mah (Mega). Otherwise you could power a planet!!!!
+The Twangy Mosquito thank you. I didn't know. little or big M made a difference 😊 but my problem was that my esc exploded.
Yea its subtle but in certain applications it can be essential. Esc's just do that sometimes. It is advised you keep a few spare for this reason. Some people order 4 to make a quad copter and 1 just simply doesn't work. Annoying and disappointing but just the way. Your battery's ability to deliver the amperage will not pop your esc. Think of it like a weight lifter. He may have the ability to lift 200kg, but that doesn't mean he wont be able to lift 2kg. Its just that it isnt much of a load for him. he COULD do more if NEEDED. Also just go over your wiring again checking for short circuits. Hope you sort it!
dang.. now i know why basically all my lipo's are puffy.. i havent discharged them enough when flying, and i have allways left them after flying for the day.. so all batteries are probably about 20-30% used... and i have allways charged at 2 amps.. but i dont think i own a less than 2 amp battery... can a puffy battery explode on me when flying, or will the cells show different voltages before i get to a critical point in a batterys life?
Bruce, does that wattmeter work OK. I have one the same and its gets confused when there is digital stuff at the other end. Like my quadcopter at idle reads up to 20A. Its OK with non digital stuff like lamps and heaters. Perhaps I have a Friday duffer.