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 the balancer itself does draw a bit current so this can’t be plugged in and forgotten forever. i bet after a few months the current draw will be significant enough to drain the cells down to dangerous levels, especially if it’s not fully charged.

anyway, i was checking voltages by reading the pins here:

and accidentally touched two pins with one probe and shorted it like a fukin idiot:

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