20Error 21: Communication error with the battery management system (BMS)

Action: Check the BMS connection between the (battery and controller board.)
If this cable is intact it is probably a BMS problem
have it replaced by a repairer or change the battery

@trotetun Repaired Error code 21 Xiaomi #escooter #scooter #tutorial #21 #xiaomi ♬ som original - Xxxtentacion_10K