The battery builders club

[visnu777]

I’m waiting for this one
https://de.aliexpress.com/item/32945565819.html?spm=a2g0s.9042311.0.0.291a4c4dDPyph3
right now, it took longer because of Corona but its on its way now

Active balancing boards

I just found this https://s.click.aliexpress.com/e/UWolwyK According to the specs this board start to balance the cells as soon as they get out of balance. So even if your board is not on the charger it will always be balancing. What’s your thoughts about it? Calling the bms master @b264 as well, your opinion is highly appreciated

Testing active balancer - results

so… put this pack aside for a while, didn’t really think about it. but, need to put it to use so took voltage readings today. and…some interesting changes: [image] by some unknown mechanism the drift has nearly balanced out. voltage across all cells have reduced, some more than others. cells 5 and 6 have dropped by 0.02v, while cell 1 has dropped 0.12v. this could also be caused by not letting the cells settle after charging on the previous reading… not sure what’s happening here, but th…