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You should never make it like that. Each battery cell has a different capacity, but in the end, it does not last long and cannot be used. I can never agree to make it this way.

Very dirty work on soldering...

That's not a battery. That's a potential bomb. Be careful

This is not 12v it's 11.1v . Have you test all the battery?? they are old you don't have 2500mili amps par battery. You are way below 1000w. it's more like 600w.

This battery is going to catch fire if used. The way it is built, no safety seems to be followed with lame wiring. Also, various battery types and brands were used.

Have you ever tried to use only the flux in your solder wire? That flux you use is for tubes, not for electronics! To watching this is terrible.

You should not really weld BMS... why? Because the copper traces are weak, they can literally get out of the BMS leaving you with no place to solder... i've made that mistake at huge levels and please dont' do it

You made a bomb not battery

Your battery is 64ah, BMS is 40ah? Why...

It kinda scares me.

The laptop battery need to be tested before used in other configuration , because they can have various capacity ! If one have 500mAh and other 2000mAh the bms stop entier pack wen first battery ritch 2.5v ...

Вот как собирают гироскутеры, самокаты. Что они потом в квартире взрываются)

Most extremely unique I have never seen someone work on their BMS board for batteries this hard and display such a good video.

Будет дикий разбаланс!!

This video shows only how to make used 18650 cells as battery packed, what concern me maybe all those who watched is the lack of safety in making. First is the battery tested individually for their capacity? if any of the individual cells peak its voltage before the rest of the packed is disaster waiting, second is you separated each series with a paper cardboard? lastly if you could buy a spot welder maybe you could buy a soldering iron to solder the bms to the packed since it carries more amps to that connections.

Это просто опасно. Почему на такое рукожопие у ютюба нет цензуры?!

You could do it from rejected laptop batts. Most of such batts are good but main problem is max current drain. Laptop batteries has max current limit, mostly 4-5 Amps. So , big capacity but low current load is the problem is practice. BMS has current limit much bigger that the batts! That could result batts to explode. For low current rigs it could be ok.

Никогда так не делайте, если вам не жалко своей квартиры или мастерской где вы собираетесь это собрать, смотрите другие инструкции

Hi your videos are always inspiring.