Make your own Li-Ion Battery Pack

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In this project I will show you how to combine common 18650 Li-Ion batteries in order to create a battery pack that features a higher voltage, a bigger capacity and most importantly useful safety measures. These can prevent an overcharge, overdischarge and even a short circuit of the batteries.

Music:
2011 Lookalike by Bartlebeats

[albertpelletier]

When soldering directly to a battery cell, it works best by using the largest possible soldering iron tip. That way there is less chance of overheating the cell. A small tip may well be hot enough, but will take much longer to heat the mass of the end of the cell, and more heat will have time to migrate into the cell instead of being concentrated at the very end where you are trying to solder. This is especially noticeable on the negative pole of the battery, which does not usually have a raised button which protrudes from the end of the cell; and therefore has greater mass right where you need to heat it. The positive protruding button is always easier to solder.

[leonardomelia]

What I like most of your videos is that you write down also formulas, all doubts are sorted out this way❤️ and you make the whole video nor too slow and neither too fast to follow. It's just perfect

[PlasmaHH]

Note that a lot of LiPos don't like it when you solder to them, so use a very high soldering temperature with lots of thermal mass, work quickly, and then use some damp cloth to quickly cool the joint down to safe temperatures. If in any way you can, use welding for the tabs instead. Its a nice little project to create a capacitor based welder for tabs anyways.

[rallekralle]

just realized you're getting close to 500k subs! it's nice to see that there are still some channels with a lot of subscribers, that actually deserve them.

[tedgriebling]

I love your videos. I have a strong recommendation for future pack builds: Add paper (something that won't melt) between any high-amp wire laying next to a cell. It's also a good idea between the ribbon connectors and the edge of the cell on the positive ends. This reduces the risk of a hot connection from melting though the insulation and creating a short. This exact failure happened to me once and I narrowly avoided a bad fire. After this I immediately understood and appreciated the purpose of the paper shims found in many OEM packs.

[GadgetAddict]

Nice project. I'd probably skip the hassle of tab welding or soldering and just use two of the 3-cell holders from eBay. It wont be quite as compact but it will get the job done. Maybe replace the included wires with thicker ones.

[dronemansk]

if this guy and colinfurze would meet, they would make a fully-functioning Iron-Man suit :D

[LAUOA]

Thanks! Now, a couple of things: First never glue a BMS on top og the batteries. The negative cylinder of the battery is only isolated by a thin layer of paint. Shorten this might be bad (Speaking of experience) Never use melting glue on the BMS. It gets so hot, the glue will melt. Keep it up! Lots og great ideas!

[platniumgod]

This helped me a lot scott! Thanks for making this awesome videos

[Hobbyminecraft]

Damn The Video came 2 months to late. I built a boombox with li-ion batterys and had to find every Information by myself about charging bms and so on. Now you answered all My questions just a Little Bit too Late.

I Love your Videos they are absolute Amazing.
Mach so weiter ;)

[emailausdrucker]

the 500k are approaching quickly. Congrats.

[Huskie]

I did not know how to setup the balance connector, you delivered with your great content once again. Thanks!

[Boltedlightning]

Your my favourite electrical YouTube to watch please keep up the great work 😀

[unclhos]

A project like this is what got me into circuits. Still working on mine have over 500 cells i'm putting into 6S configuration.

[mathis]

Great scott logic: I need to build solder a batterypack, lets build a fucking spot welder lmao hahah ly man

[jesusalbertodelao]

Man, I'm too stupid to understand all what you say. Really I'd love to be able to do all those stuff but I think is too complicated for me. Better I buy something done already. I really admire people like u. Thanks for the video

[ParthBhat]

I've been looking for a better video and then my phone rang with ur notification... like like like

[enduser]

Liked the min/max testing and bold bridging to the secondary method...3d design and printing case for the win!

[Not-C-]

how notice that scotte always says in the beginning of video "I recently"

[gusstavv]

Each time I watch any of your projects I want to buy it, which defeats the DIY part hehehe