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you're Right. I had put wrong number in my Excel-sheet. Now everyone is 3,64-3,65. Great.

It's screwed in a cooling plate so the FET's are attached to that plate. I'll have grind off one millimeter somewhere to fix this good I think :) Yes the lowest one are 3,34V (cell2), cell 1 is 3,95V and the other ones are 3,64-3,65V so the first two out of balance a little but that might...

I did some measuring and found that the balance (sensors) connector was not really in location. I had noticed that before and put melt glue there but now it has become bad again. So... I pushed it in a little and then the BMS works!! I actually noticed that when charging, it wouldn't charge...

...aha, you mean on every cell. Hmm that will be good. I'll measure that later. Thanks

I measured with Com-lead on the red wire and the Black lead on each of the two white wires. OFF: 10V one side, 35V other ON: 25V on both

Anyway, thanks for answer! Yes it's really a shame that it didn't last longer than a week :( the pack was seriously clumsy soldered, just hope something hasn't broke.

Ok, I tried with a switch now, like this: It didn't work! :( (I have 36,5V in the pack now, can try charge it tomorrow)

Thanks. Yes it's a good match for this. I built it easter weekend, almost two weeks ago

OK, so I isolate the black/red (for now when I don't ned light anyway) and then put a SPST switch on the white Wired. Ie the white wires shorted activates the output FET's? Sounds like the most logical choice yes.

I have problems with new battery pack. I think it might be the switch on the battery. There are a fuel gauge and two switches. One for power and one for rear light. The switch for rear light doesn't work anymore (stucked). And when pushing the power switch it doesn't switch the circuit on. It...

Hi all! I have liked bicycles ever since I was little and I also like new technology. So... of course I had to try building an e-bike :) Ordered some stuff from china and converted my cruiser. Have run it for a while and feels like this is one of the best inventions since the wheel :)