... -in pre-charging circuit and over current detection3,The controller have the self-measure and overheating protection function.4, ... without acceleration.8,The maximum output voltage of the controller detected and controlled automatically so to avoid overcurrent.9, ... 5V, less than 50mA4,Nominal voltage: 48V 60V 72V5,Controller operation voltage range: Nominal voltage ±25%.6,Braking and accelerator ...