Bafang Ultra G510 motor controller for replacement;

M620 Ultra motor controller for high power e-bikes.

Bafang Ultra controller 48V 30A or 52V 30A  for replacement. 

There are two types of M620 torque sensor, CAN protocol and UART protocol, please check your motor protocol before ordering. The CAN protocol motor needs re-calibration by the Besst tool after replacing the controller or the torque sensor, please note. If you don't have Besst tool access, please don't order the CANbus controller.

If you don't know how to check your M620 motor protocol, please check from the display's connector: DP C18 display

Note: Some  UART motors may need calibration after replacing the controller. If you don't know how to calibrate the controller manually, you can order a Bafang M620 calibration display(Only for UART) together with the controller.

How to clasify UART or CAN protocol for your M620 motor? Please check the connector of the display,  UART protocol motor is with round connector while CAN protocol motor is with triangle display connector. 

For how to calibrate the motor, please check video below: