Quote:
Originally Posted by Stubby79
Could be the capacitors charging up that make it spark...does it spark if plugged in to the wall first?
Could also signify something more significant and potentially hazardous that could damage the BMS. Might be a good idea to check for continuity/resistance between the + and - output end, in case it's shorted between them somewhere.
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Plugged into the wall, it use to spark harder sometimes when plugging in battery. When it failed, the spark at battery was weaker. Charger would draw power for charging light LED but not for the red "ready" LED for connection to the wall.