I hope you guys enjoyed this video. If you want to learn even more, you should check out my Amazon #1 Bestselling book, DIY Lithium Batteries, available in paperback and ebook formats. a.co/iDtWdPX
copper cost's more, that's the main reason its not used for short connexions and nickel is more than capable for this job but on long runs, connexions copper is a must also don't forget to add a fuse as he did. a fuse is a must!
I'm Interested in replacing my Car Battery with Lithium Ion for my 1981 GTI Rabbit that i use for racing. I know I can buy a Braille Batterie for about $550 but is there any information where I could build my own from recycled Batteries?
(DIY Batteries) Please let me where I can purchase the battery terminal identifier stickers (Positive and negative stickers) you have used in your video. Thanks.
Thanks for the video. A number of posters have suggested improvements on materials, configuration, etc., which is fine, but the essential thing you've done for me? Make me realize that I don't have to pay MANY hundreds of dollars to replace my bike's 48V, 9AH battery pack--I can actually do it myself, and reduce the biggest operating cost of keeping my eBike on the road. I do tend to agree with the commenter who suggested that you don't have to stack those nickel connecting plates as you do in the video--a single copper connector is likely to be sufficient, but I haven't looked into heat generation in a configuration like this, so won't offer that as an informed opinion. I also agree that heat management is very important when you build a pack from sub-component batteries, and I'm going to study that in greater detail. Thanks!
You forgot lots of important things like fume extraction, face mask, hazmat suit, ear protection, a fire extinguisher, blast wall, faraday cage, RCD, lightning arrester, surge protection, a static grounding mat and wriststrap, a hardhat, a hi vis vest, ohh.. and elbow and knee protection in case you fall over. Apart from not covering those hazards - a pretty good tutorial really. thanks! ;)
Hey, That Kapton tape, I use it as a Purge Tape at work when i weld Stainless or Chrome pipe, It allows me to look inside of the pipe and se the root of the weld. This tape has many applications
Hi Micah; Thank you for your efforts in sharing all this information and training! I own your book - I have re-read parts of it several times, and I've watched many or most of your videos. I'm going to be building / converting my own bike to an e-bike. I'm shooting for a 750 Watt + power mid-mount motor. I'm shooting to having built a 1500 Watt battery - I believe it will be a 52Volt battery. My first attempt will be with my "lesser" capacity batteries so that I will "learn" with those. The batteries I have that are better - I will reserve for my second effort. Right now, I'm at enough batteries to make 3 such (similar cell-count) batteries. Once more, thank you! Josh
FANTASTIC VIDEO mate!!! You're the number #1 ebike educating dude..... LOVE watching your videos, reading your educational articles, your educational battery build kits... man... you rock!! Well done.. great job as usual =]
Design is sound for the most part. You really need to up your soldering game and also need to solder the nickel strips before you weld the nickel. It’s the little things that make a good idea great
Nice to get cells that accept solder. I got a bunch of cells that has stainless steel end caps,there is no soldering those bad boys! Ended up making a spot welder to weld the links on to make a decent battery pack.
1:40 "I like the nitrile gloves because I feel like they give me the most dexterity and also the make me look like a dentist." *Smacks gloves* Sounds like you know how to fill a cavity.
😬 They look like proctologist gloves to me. They always smack their gloves right before they go to sticking all kinds of shinny tools up your hiney hole.
The safety warnings are no joke. A short circuit in the power leads through a wedding ring can be disastrous. There's a chance they'll weld themselves to your ring making them very tough to disconnect, the ring heating up will cook itself stuck onto your finger. Such an injury could mean loosing your hand or even kill you. And that's without the battery exploding or catching fire from being shorted. Don't screw around with angry pixies unless you know what you're doing. Then it's actually remarkable safe. Safer than playing with internal combustion engines. You just need to know what bites.
With your great information and the information on Maker Batteries I now understand the positioning of the BMS wires, other people haven’t explained this all the way. Thanks for the great video. I bought your book on Li-ion Batteries. Very informative book, not done going through it. Thanks again. MikeJ F
This is Fantastic content! I am waiting on my components, but this is my next step in my build. What you have done here is exactly what I was looking for. Thank You!
Are you just shorting the batteries by welding 3 together? You got a positive, a negative, and then another positive all welded together? Isn't that a pretty bad idea?
I agree with you that lead free solder is trash. But I highly suggest checking out the silver bearing leaded solder. Lead has a conductivity rating of 7%, tin is 15%, and silver is 105%. So just that little 2% content actually improves conductivity significantly
so i have a 14s24p Li ion battery with a standard 5A charger and if my BMS supports for example 30A Chargepower i can use a charger with 30A safely at home? samsung 25R cell btw
I want to rebuild a couple of Segway lithium batteries. They use 18650 3.2v ~6Ah....but I see 18650 3.2v cells rated at 10Ah. The Segway packs incorporate a bms. Could I safely use the 10Ah cells and hopefully increase the range of the device? Other battery suggestions? If 10s would overwhelm the bms, would a smaller bump in Ah work...say up to 7 or 8?
Great video ... I've found super glue much better than hot glue ... cheaper , much stronger fix , won't soften if battery gets hot, less messy , less weight .. Just tie the cells together firmly and apply superglue it gets in by capillary action
Thanks for the video. The labeling the cells with polarity decal /stickers is the ONLY thing that I don’t have. Please let me know, from where you bought the stickers, so I could buy from them. The stickers, for me, plays a major role in identifying the polarity, because I made serious mistake twice before. Therefore, I request you ( I requested several times) again to, please let me know, from where you purchased the polarity stickers. Thanks in advance.
Hello. Can I ask you to make this video ? Which is that I'm requested that if possible for you to make a video on how to make a 48 volt 14.5ah for bicycle conversion kit 750 watts.
Can you make a video on how to add another (16) 38120 LifePO4 cells to an existing battery pack to increase the Amp hours. ex: 48v 10ah to 48v 20ah. Can this be done in a triangle formation? also how to rewire the BMS for the additional batteries. Thanks for the great videos.
I just purchased your book. I've watched a few, yours is by far the most professional. Quick question on fuses between the packs. I see some add fuses and some do not, can you explain why you don't?
I might want to put together some batteries for my camper, e bike and tools. Air conditioner is my biggest hurdle. I want this all to be done by solar and awesome batteries. Any advice would help in a major way. Thank you!
How many amps is this setup?What do I do different if I want to build a 36v 20A battery pack?Any info is helpful as the "store bought" ones are VERY expensive as opposed to buying components.Thank You!
this is 3p14s battery right? but isn't max voltage of 18650 4,2V? I know, 3,7V is "normal"... but still... do you even need 14s (58,8V max)? wouldnt be 13s enough (54,6V max)?
Hello, just subbed ya, great videos, great explanations and visually clear n concise. Question, if I have a 10s4p 18650 stock battery factory built, if I want to just try 12s on my electric skateboard, can I put a 2s4p with same cells as the 10s in SERIES, just to try difference in speed n power of 12s compared to 10s. I have Flipsky FT85BD ESC that can handle 4s-20s. My motors should be ok on 12s, seen someone else do it too. But with a custom built12s5p. My carbon deck small n has 10s4p, whole enclosure could take 60 cells, this guy put his ESC more outside the deck. Like the evolve ESC trick, extend the ESC heatsink downwards in order to get more room. Cheers again
From past experience, the foam material is a big mistake! Any material that can hold moisture or liquid that comes into direct contact with battery contacts is asking for trouble. Moisture in the foam will short out a cell, and you have a fire bomb waiting to go off. Excess moisture in the battery banks is what caused the battery fires on the Boeing 787 aircraft.
How do I charge this battery if I succeed in doing say 48 volts 100am less or more, which I intend to use of my Dc freezer, am off grid and has charge controllers. But my biggest challenge is battery and my budget is tight. I can salvage batteries for less. Your advice is welcome.
could you pls help me make one...materials that u use in the video is not available in our country...were could i buy those..pls help.thanks in advance...
Absolutely, it's kind of hard to watch him solder so many times like that. The heat can really screw up your batteries. The problem is that spot welders aren't cheap and fairly niche in their functions. So I don't blame him but I feel like he should mention that rather than showing the non-preferred way.
I accidentally shorted two LG HG2's.. in series... Burned some fairly heavy battery contacts in half almost immediately. Batteries didn't even get warm. Still work to this day.
how long does this battery last with charging recharging (what is its rechargable life 1 year at recharge 300 times or 12years 3600 times ??? ) will it recharge for 12 years ??? and to what temperatures will it work in the cold as like most batterys they suffer in cold to freezing temps
Where is the fuses....? I saw there are many vedios during running some short circuits incidents at that blasting/burning pack inside.... Kindly help us how to use fuses for this battery pack. Note:its not just because of wrong connections.. Everything is fine using it for bike, after couple of days I saw blasting/fire in the pack So how to get rid of this issue.
use a center bus bar and connect fromt there with fine electric wires wich will act as fuses look up your amps draw on the battery so you can use the correct gauge for the fuse wires
Was reading about tin whiskers, solved in the 1950's by adding lead to solder. Interesting and good that people that solder with SnPb don't have elevated lead in their blood. Lead isn't water soluble, and has a boiling point well above the temperature of an open fire, so no groundwater contamination or vapour worries [EE Times] I think for aerospace components it showed they use components plated with tin lead solder with about 15% lead to avoid tin whiskers, also less brittle than lead free solder? -- RoHS might actually mean more ewaste when faulty items are thrown away, and ever-smaller components means less solder to 'glue' them on. It seems 5% lead in solder for consumer electronics would have been a better choice than completely banning it? (percentage of lead in electronics was small compared to car batteries etc.) Lead free solder also needs a higher soldering temperature, can affect the circuit board e.g. warping
I have a question please. If I have a battery, 12 v16A Lithium. Three cells. At what voltage should the charger cut the current? 12.6? or more? Thank you
OK, I have ordered the batteries and the Maker kit. I will install the battery to a Zappy 3-wheel scooter, that has lead batteries (3x12V) installe. I do have a litiuim-ion charger (36V/42V) already. Do I HAVE to install the BMS?I'd rather not n order one of those also :)
So this idea can be used to power a multi rotor UAV, right? Not 52V but something around 6S 22.2V? High Capacity? If you're using this for a eBike surely it would power an Multirotor! Right?
Excellent craftsmanship here! Please, did you spot weld the plates on these triad cells or did they come that way? If you did the spot welding yourself, what equipment would you need to purchase to do this yourself?
Why not just fold over the nickel strips to make up the 4 stack? Kind of like the 4-to-5 jump but without cutting the strips. You would only have a single solder point on each battery pack but still have the better current handling capability.
Hey, I was wondering if anybody could give some advice, I may potentially need to build a battery to replace the one in a Seabob F7, the current battery states, 2.1 KW/h, 56v, 40ah.. would this be possible to make from 18650 cells and would I be able to use the original BMS from the old battery pack with the new 18650 cells once they’re wired together? The old batteries were accumulator battery’s, I’m unsure what this means or if it matters? Also apparently the previous battery was 14 lithium cells, does this matter? Thanks :)
Hello Micah, thanks for all the instructional videos and I go through them all. Some time back I wrote to you about Battery terminal identification ( Positive/Negative) stickers. Your response was that I could print them etc etc. Now in this video, I see the stickers, that you are using to identify the terminals. Would you be able to tell me, from where I can buy these stickers? I checked your book, DIY LITHIUM BATTERIES again, but couldn’t get any detail. Please let me know, from where I can buy the Positive/Negative stickers. Thanks in advance.
Buongiorno , Vorrei sapere che celle prendere da 18650 litio 36 volt 2500-3000 mah per pacchi batterie per motori da 250 w 36 volt ,per tassellatori da 120 w 36 volt ? è tanto importante la discarica ? quanta è necessaria per una Bike ? grazie
I buy my battery over seas with shipping an battery i pay 336$ for a 60v20ah how much do you charge for your here in the usa?pls respond cause the draw back i have to wait 20days to get my battery but would like to know do you charge the same or more?an how long will it take to send?
this is April 2019 so no idea if anyone is till modding this, but ... i have an echo 58 v battery from a cordless lawn care system that had stopped charging ... and echo no longer answers calls for customer service. so im on my own :) could i start a conversation about how to start the charging process again .... im sure there are lots of questions, trust me its what led me here :)
why did you put the bms at the end of the batt pack like that? dont you know how to put the bms at the side of the batt pack? your way looks so untidy. with long wires running from 1 end of the pack to the other end.
Jake Evans simply because he uses 14 groups made by three batteries. These three batteries have been bought already joined in parallel and then they have been soldered by him in series. So it is 14*3,7 to get the right answer.
i think an 18650 is 3.6 v by 2200 to 3000 mah, so if you connect 10 in series you get 36 v. then you need to have at minimum 100 parallel. why on earth would you need 36v at 300ah, though? that's over 1000; 18650 batteries and over 10000 watt hours.
I hope you guys enjoyed this video. If you want to learn even more, you should check out my Amazon #1 Bestselling book, DIY Lithium Batteries, available in paperback and ebook formats. a.co/iDtWdPX
Why not use copper strap instead? Thanks for posting this btw.
copper cost's more, that's the main reason its not used for short connexions and nickel is more than capable for this job but on long runs, connexions copper is a must also don't forget to add a fuse as he did. a fuse is a must!
I'm Interested in replacing my Car Battery with Lithium Ion for my 1981 GTI Rabbit that i use for racing. I know I can buy a Braille Batterie for about $550 but is there any information where I could build my own from recycled Batteries?
(DIY Batteries) Please let me where I can purchase the battery terminal identifier stickers (Positive and negative stickers) you have used in your video. Thanks.
DIY Batteries when you are soldering the white wires, are you connecting them only to the positive ends of each cell series??
Best DIY battery channel… full of details. thank you very much
Thanks for the video. A number of posters have suggested improvements on materials, configuration, etc., which is fine, but the essential thing you've done for me? Make me realize that I don't have to pay MANY hundreds of dollars to replace my bike's 48V, 9AH battery pack--I can actually do it myself, and reduce the biggest operating cost of keeping my eBike on the road. I do tend to agree with the commenter who suggested that you don't have to stack those nickel connecting plates as you do in the video--a single copper connector is likely to be sufficient, but I haven't looked into heat generation in a configuration like this, so won't offer that as an informed opinion. I also agree that heat management is very important when you build a pack from sub-component batteries, and I'm going to study that in greater detail. Thanks!
if you are riding an electrical vehicle keep in mind due to the bumps you want a solid connectivity between the cells
You forgot lots of important things like fume extraction, face mask, hazmat suit, ear protection, a fire extinguisher, blast wall, faraday cage, RCD, lightning arrester, surge protection, a static grounding mat and wriststrap, a hardhat, a hi vis vest, ohh.. and elbow and knee protection in case you fall over. Apart from not covering those hazards - a pretty good tutorial really. thanks! ;)
and colin furze safety tie
Atomik Laser
I've just read your comments and you've made me laugh so much I've just spat my drink over the iPad . Fab sense of humour 👍
Hey, That Kapton tape, I use it as a Purge Tape at work when i weld Stainless or Chrome pipe, It allows me to look inside of the pipe and se the root of the weld. This tape has many applications
Hi Micah; Thank you for your efforts in sharing all this information and training! I own your book - I have re-read parts of it several times, and I've watched many or most of your videos. I'm going to be building / converting my own bike to an e-bike. I'm shooting for a 750 Watt + power mid-mount motor. I'm shooting to having built a 1500 Watt battery - I believe it will be a 52Volt battery. My first attempt will be with my "lesser" capacity batteries so that I will "learn" with those. The batteries I have that are better - I will reserve for my second effort. Right now, I'm at enough batteries to make 3 such (similar cell-count) batteries. Once more, thank you! Josh
Great Video.… it would be nice if you had links to suppliers of the triple batteries; the nickel strips; non-conductive tape; & foam
FANTASTIC VIDEO mate!!!
You're the number #1 ebike educating dude..... LOVE watching your videos, reading your educational articles, your educational battery build kits... man... you rock!! Well done.. great job as usual =]
Design is sound for the most part. You really need to up your soldering game and also need to solder the nickel strips before you weld the nickel. It’s the little things that make a good idea great
Nice to get cells that accept solder. I got a bunch of cells that has stainless steel end caps,there is no soldering those bad boys! Ended up making a spot welder to weld the links on to make a decent battery pack.
1:40 "I like the nitrile gloves because I feel like they give me the most dexterity and also the make me look like a dentist."
*Smacks gloves*
Sounds like you know how to fill a cavity.
😬 They look like proctologist gloves to me. They always smack their gloves right before they go to sticking all kinds of shinny tools up your hiney hole.
The safety warnings are no joke.
A short circuit in the power leads through a wedding ring can be disastrous. There's a chance they'll weld themselves to your ring making them very tough to disconnect, the ring heating up will cook itself stuck onto your finger. Such an injury could mean loosing your hand or even kill you. And that's without the battery exploding or catching fire from being shorted.
Don't screw around with angry pixies unless you know what you're doing. Then it's actually remarkable safe. Safer than playing with internal combustion engines. You just need to know what bites.
With your great information and the information on Maker Batteries I now understand the positioning of the BMS wires, other people haven’t explained this all the way. Thanks for the great video. I bought your book on Li-ion Batteries. Very informative book, not done going through it. Thanks again. MikeJ F
you could use minus side on one side and plus side on another and then just zigzag the + and - contacts - simpler
This is Fantastic content! I am waiting on my components, but this is my next step in my build. What you have done here is exactly what I was looking for. Thank You!
Can you talk about chargers, what will you use to charge this 52 volt battery?
Are you just shorting the batteries by welding 3 together? You got a positive, a negative, and then another positive all welded together? Isn't that a pretty bad idea?
How do you call this a no solder kit when 6:50 seconds in your showing how to solder the cells together?
Ah you idiot. That is a fucking link for kits. Not about the video...
Great video...but why not solder the connections using some 10 awg wire between the cells? Wouldn't that have the same current carrying capability?
And the small rubber you used to close the end of the wire in the last part of this video.. Thanks again
Heat Shrink ?
back with the channel
Awesome vid, how nuch distance roughly from that 10ah battery 30km?
could yo give me recomendation best gloves when build battery pack? or nitrile glove is the best for that condition?
I agree with you that lead free solder is trash. But I highly suggest checking out the silver bearing leaded solder. Lead has a conductivity rating of 7%, tin is 15%, and silver is 105%. So just that little 2% content actually improves conductivity significantly
so i have a 14s24p Li ion battery with a standard 5A charger and if my BMS supports for example 30A Chargepower i can use a charger with 30A safely at home?
samsung 25R cell btw
I want to rebuild a couple of Segway lithium batteries. They use 18650 3.2v ~6Ah....but I see 18650 3.2v cells rated at 10Ah. The Segway packs incorporate a bms. Could I safely use the 10Ah cells and hopefully increase the range of the device? Other battery suggestions? If 10s would overwhelm the bms, would a smaller bump in Ah work...say up to 7 or 8?
Great video ... I've found super glue much better than hot glue ... cheaper , much stronger fix , won't soften if battery gets hot, less messy , less weight .. Just tie the cells together firmly and apply superglue it gets in by capillary action
If I wanted a 52-volt battery with the same width, only 25 Ah, how long would that be?
What is that thing you use like soldering without lead, to attach a nickel to the end of the battery? THANKS
Spot Welder ?
How do you disable CLD to allow fast charging in incell batteries 250ah
Thanks for the video. The labeling the cells with polarity decal /stickers is the ONLY thing that I don’t have. Please let me know, from where you bought the stickers, so I could buy from them. The stickers, for me, plays a major role in identifying the polarity, because I made serious mistake twice before. Therefore, I request you ( I requested several times) again to, please let me know, from where you purchased the polarity stickers. Thanks in advance.
What wattage are you using on your soldiering iron please ?
Hi Mikey, How do you switch the battery off if you are not controlling the discharge circuit?
Hello.
Can I ask you to make this video ?
Which is that I'm requested that if possible for you to make a video on how to make a 48 volt 14.5ah for bicycle conversion kit 750 watts.
Hi may i know i same pattern of cell arrangement achieve 60v 40 amps? N wat type of bms should be used?
what if you were to add a terminal stud in the middle of each triangle to simplify connections?
Why don't you just spot weld/tac the strips instead of soldering?
Not everyone has a spot weld, this way he shows poor commoners like me how to do it with a something I can afford.
Can you make a video on how to add another (16) 38120 LifePO4 cells to an existing battery pack to increase the Amp hours. ex: 48v 10ah to 48v 20ah. Can this be done in a triangle formation? also how to rewire the BMS for the additional batteries. Thanks for the great videos.
Why didn't you use a small selfmade point welder?
I just purchased your book. I've watched a few, yours is by far the most professional. Quick question on fuses between the packs. I see some add fuses and some do not, can you explain why you don't?
I might want to put together some batteries for my camper, e bike and tools. Air conditioner is my biggest hurdle. I want this all to be done by solar and awesome batteries. Any advice would help in a major way. Thank you!
To avoid heating up the batteries you could solder each cell with just 1 strip, then add another to all the cells and so on.
good tip
Great video. I really like the way you work - very precise and accurate.
How many amps is this setup?What do I do different if I want to build a 36v 20A battery pack?Any info is helpful as the "store bought" ones are VERY expensive as opposed to buying components.Thank You!
Dear, congratulation for the video. Could you post herre please where you buy the BMS to put 14 batteries in series? Thanks
if i wanted to build a 52 volt battery 20 AH, what would be the difference?
Use your series connections for the Voltage, and your Parallel connections, for your current ( Amps). How you lay these out is really up to you.
Maybe over insulate tiny red and black wires in case the covering were to melt off, if that did happen at least they wouldn't be close enough to arc.
this is 3p14s battery right? but isn't max voltage of 18650 4,2V? I know, 3,7V is "normal"... but still... do you even need 14s (58,8V max)? wouldnt be 13s enough (54,6V max)?
Hello, just subbed ya, great videos, great explanations and visually clear n concise.
Question, if I have a 10s4p 18650 stock battery factory built, if I want to just try 12s on my electric skateboard, can I put a 2s4p with same cells as the 10s in SERIES, just to try difference in speed n power of 12s compared to 10s.
I have Flipsky FT85BD ESC that can handle 4s-20s. My motors should be ok on 12s, seen someone else do it too. But with a custom built12s5p.
My carbon deck small n has 10s4p, whole enclosure could take 60 cells, this guy put his ESC more outside the deck. Like the evolve ESC trick, extend the ESC heatsink downwards in order to get more room.
Cheers again
May build a 10s or 12s later on, depends on 12s testing.
From past experience, the foam material is a big mistake! Any material that can hold moisture or liquid that comes into direct contact with battery contacts is asking for trouble. Moisture in the foam will short out a cell, and you have a fire bomb waiting to go off. Excess moisture in the battery banks is what caused the battery fires on the Boeing 787 aircraft.
Water + lithium = EXTREME heat and fire. Good point!
How do I charge this battery if I succeed in doing say 48 volts 100am less or more, which I intend to use of my Dc freezer, am off grid and has charge controllers. But my biggest challenge is battery and my budget is tight. I can salvage batteries for less. Your advice is welcome.
could you pls help me make one...materials that u use in the video is not available in our country...were could i buy those..pls help.thanks in advance...
How do you know wich side to connect the discharge cable?
The packing was so satisfying.....
And ain't it always better t spot weld rather than soldering?
Absolutely, it's kind of hard to watch him solder so many times like that. The heat can really screw up your batteries. The problem is that spot welders aren't cheap and fairly niche in their functions. So I don't blame him but I feel like he should mention that rather than showing the non-preferred way.
for a big pack that can take high drain? what would be the recommended thickness of nickel buss plate?
Show the small bottle 48v 7ah iside connections L255 D 75 drink bottle holder fit, can you make this with 52v ore not max 48v 13s2p i think
Flawless video ever on youtube!
I accidentally shorted two LG HG2's.. in series... Burned some fairly heavy battery contacts in half almost immediately. Batteries didn't even get warm. Still work to this day.
how long does this battery last with charging recharging (what is its rechargable life 1 year at recharge 300 times or 12years 3600 times ??? ) will it recharge for 12 years ??? and to what temperatures will it work in the cold as like most batterys they suffer in cold to freezing temps
Where did you get those triangle hook up streeps?
Awesome build! Thanks for the education!
What if you want to cool down your DIY battery?
Where is the fuses....? I saw there are many vedios during running some short circuits incidents at that blasting/burning pack inside....
Kindly help us how to use fuses for this battery pack.
Note:its not just because of wrong connections.. Everything is fine using it for bike, after couple of days I saw blasting/fire in the pack
So how to get rid of this issue.
use a center bus bar and connect fromt there with fine electric wires wich will act as fuses look up your amps draw on the battery so you can use the correct gauge for the fuse wires
Was reading about tin whiskers, solved in the 1950's by adding lead to solder. Interesting and good that people that solder with SnPb don't have elevated lead in their blood. Lead isn't water soluble, and has a boiling point well above the temperature of an open fire, so no groundwater contamination or vapour worries [EE Times]
I think for aerospace components it showed they use components plated with tin lead solder with about 15% lead to avoid tin whiskers, also less brittle than lead free solder? -- RoHS might actually mean more ewaste when faulty items are thrown away, and ever-smaller components means less solder to 'glue' them on. It seems 5% lead in solder for consumer electronics would have been a better choice than completely banning it? (percentage of lead in electronics was small compared to car batteries etc.)
Lead free solder also needs a higher soldering temperature, can affect the circuit board e.g. warping
Love it. Suggest open hardware version. And help to mount Renault Zoe batteries, to increase range (ie from 22kWh to 44 kWh).
Ok maybe a dumb question but you just soldered positive to a negative how come it not a short circuit
Hello
You can show us for battery 60n 35ah 6000watt 18650
thanks a lot in advance
I have a question please. If I have a battery, 12 v16A Lithium. Three cells. At what voltage should the charger cut the current? 12.6? or more? Thank you
Where did you put the soldering iron during work? Give me a link to the product if possible.
Any good soldering iron will come with a rest.
diy batteries please tell me what iron you are using
safety briefing ends at 2:03
OK, I have ordered the batteries and the Maker kit. I will install the battery to a Zappy 3-wheel scooter, that has lead batteries (3x12V) installe. I do have a litiuim-ion charger (36V/42V) already. Do I HAVE to install the BMS?I'd rather not n order one of those also :)
So this idea can be used to power a multi rotor UAV, right? Not 52V but something around 6S 22.2V? High Capacity? If you're using this for a eBike surely it would power an Multirotor! Right?
How do you calculate charging voltage, charging time and charging amps for that li ion batteries?
Excellent craftsmanship here! Please, did you spot weld the plates on these triad cells or did they come that way? If you did the spot welding yourself, what equipment would you need to purchase to do this yourself?
Why not just fold over the nickel strips to make up the 4 stack? Kind of like the 4-to-5 jump but without cutting the strips.
You would only have a single solder point on each battery pack but still have the better current handling capability.
Looks like this website is abandoned. a shame. Nice idea!
3x18650 acumulator tips=10 Amp? Nu prea cred ca ai 10 amperi reali?
i want to start using 18650. I have read it is not safe to connect unprotected batteries in series. what is your opinion?
Perfectly safe with a good BMS.
Can your vruzen be purchased from Amazon? I want to buy it but only have a store credit there
Hey, I was wondering if anybody could give some advice, I may potentially need to build a battery to replace the one in a Seabob F7, the current battery states, 2.1 KW/h, 56v, 40ah.. would this be possible to make from 18650 cells and would I be able to use the original BMS from the old battery pack with the new 18650 cells once they’re wired together? The old batteries were accumulator battery’s, I’m unsure what this means or if it matters? Also apparently the previous battery was 14 lithium cells, does this matter? Thanks :)
The idea of putting smaller things together is because even if one fails the others can sustain volts. Three is the choice.
is there any way to reduce the heat when the battery is running in high current equipment?
Hello Micah, thanks for all the instructional videos and I go through them all.
Some time back I wrote to you about Battery terminal identification ( Positive/Negative) stickers. Your response was that I could print them etc etc.
Now in this video, I see the stickers, that you are using to identify the terminals.
Would you be able to tell me, from where I can buy these stickers? I checked your book, DIY LITHIUM BATTERIES again, but couldn’t get any detail.
Please let me know, from where I can buy the Positive/Negative stickers. Thanks in advance.
Buongiorno ,
Vorrei sapere che celle prendere da 18650 litio 36 volt 2500-3000 mah per pacchi batterie per motori da 250 w 36 volt ,per tassellatori da 120 w 36 volt ? è tanto importante la discarica ? quanta è necessaria per una Bike ? grazie
I buy my battery over seas with shipping an battery i pay 336$ for a 60v20ah how much do you charge for your here in the usa?pls respond cause the draw back i have to wait 20days to get my battery but would like to know do you charge the same or more?an how long will it take to send?
so im guessing your not concerned with cooling the pack, cause that is a well insulated pack
this is April 2019 so no idea if anyone is till modding this, but ... i have an echo 58 v battery from a cordless lawn care system that had stopped charging ... and echo no longer answers calls for customer service. so im on my own :) could i start a conversation about how to start the charging process again .... im sure there are lots of questions, trust me its what led me here :)
Good luck with your conversion. I'm looking foward to do 1 myself
why did you put the bms at the end of the batt pack like that? dont you know how to put the bms at the side of the batt pack? your way looks so untidy. with long wires running from 1 end of the pack to the other end.
18650 batteries are 3.7v from what I understand how is 42 cells equalling 52volts? why is this not 155.4v? please answer
Jake Evans simply because he uses 14 groups made by three batteries. These three batteries have been bought already joined in parallel and then they have been soldered by him in series. So it is 14*3,7 to get the right answer.
where do you get the shrink tube for the battery?
Won't the hot glue melt when the batteries get hot ?
Hello I have all my 13s x 9 p all done in render 3d,I need help as how the BMS goes on
Very useful, many thanks!!!
What solder are you using hollow flux or solid with your own flux. Thanks
Removes the plastic watch belt, leaves the gold ring on. very nice
Follows with gloves.
Cooooooooooool !!!!! Yes, there is this dentist look with the glove :)
how can I build a 36v battery pack that can provide up to 300amps discharge??
i think an 18650 is 3.6 v by 2200 to 3000 mah, so if you connect 10 in series you get 36 v. then you need to have at minimum 100 parallel. why on earth would you need 36v at 300ah, though? that's over 1000; 18650 batteries and over 10000 watt hours.
It's a nice project, my only problem is the fixability in case of problem.
great educational video many thanks for making it.