Now its my time to have such problem.. My V1 is two years old and 400 miles on it, and never had any issues, only scratches.. But three weeks ago I rode to completely empty the batteries and forgot to recharge right after getting home.. That moment I think, I killed my board. Leaving the batteries empty for too long is deffenetly not good as the electrical circuits drains electric current even when not on. When I try to recharge, the green lights goes on and the pulsing blue light indicates the battery is full, but the app say 0%. Well, sending the board back to FM is not an option for me. Tryed everything as you guys suggested but with no luck. Next step is disassembling and trying to recharge each bat cell separately.. With luck the BMS will work afterwards