Help to identify a BMS board.

[Alanc]

My 72v 35ah Rawrr mantis stopped taking a charge. I know the BMS is the culprit but can't seem to find any information on this thing. Battery is good and works fine. Just won't charge. Anyone have a clue. Thx Alan.

 

[leffex]

If the cells are unbalanced the BMS ( battery management system / safety board) will cut charge or discharge from happening. I advice you to check there. Be careful and ask for help from the correct sources as these things are dangerous if handled wrongly.