DIY Battery

[Guilherme souza]

Dear all

I have a 350W motor , hub motor front whell

Everything is almost ok , my problem is the battery

I use old laptop batterys , I test then using Litokalla charger/tester

I did a big battery 36V 20 Amp , 10S 10P , but , is not working
I used just cells with 2000 mha capacity after solder then togheter each cell with 10 laptop batteries in parallel , I just able to use for a few kilometers .

I see that some cell get warm and when I did a load test using a cell meter I checked that one group of cell is lower thabn others

I need help to test this cells correctly
Some one could help me ?

thank you

Guil

[fatfoldingebike-bc]

sounds like you are well down a path, but it also sounds like you dpon't fully understand what you are doing.

You need to respect these batteries - especially that many.