back story, skip below here if not interested:
i got a 12s bms from bestech through @korryh’s group buy.
pretty sure i burnt it out during installation as i shorted the exposed battery’s positive bullet connection onto the heatsink of the bms while the negative connection was made to it. the short created an explosive spark and melted a portion of the heatsink.
for sure the bms discharge isn’t working because it toggles between battery voltage (47v, let’s say) and then dips to 4.9v.
also the charging isn’t working, it’s stuck at 45v.
basically it’s fucked.
so i need a new bms, and i’d like to stick to bestech.
you can find spec sheets here:
the upper and lower voltage cutoffs can be adjusted. in the above group buy it was set to 4.1v upper, 2.9v lower:
minimum purchase is 2, so if someone could jump on this with me. if i get no interest by end of the day i’m just going to order 2 x 12s, and 3 x 10s.
need to get this quickly since i’m charging with a wonky bms.