The battery builders club

[thisguyhere]

Testing active balancer - results

Ordered one of these through ebay, got it in a couple weeks ago: [image] It’s an active balancer, started talking about them here: Put it through some cycles and wanted to share my findings. A bunch of numbers: [Untitled] Tested on a 12s pack that was being fixed. Manually drained cells 5, 6, and 11 down to a voltage where bms balanding would NOT work (bms won’t go into balance charge if delta is ±0.075v or so). Starting voltages, out of balance cells in RED Drained pack down, varia…