hey guys, so my board is having some battery issues, can someone help me identify what the problem is? I’ve tested the VESC and determined it is not a DRV fault. Right now it seems more of either BMS or internal li-ion cell issue. Here’s some of the symptoms:
- when battery level is at 40-70 percent, I am able to brake without issues.
- when battery level is either above 75% or below 35%, I am unable to brake at all but still able to accelerate without any problems. When I attempt to brake, the VESC gets cut off and resets itself. This happened on both VESC I swapped tested.
- when battery level is at or below 33%, the board stutters on acceleration and randomly shuts down. But when I push on it manually, it powers on again and can go for another 10-20 feet before powering off again.
battery pack is 10S5P, custom made. BMS is Supower 10S60A. Had this pack for over a year now so it could be that the pack is slowly reaching it’s end of life…but should it be cutting off the brake like that?
thanks for the help in advance