The reason for the failure of electric bike controllers is that there are many inconspicuous but important small components in electric bicycles, and the electric bike controller is one of them. Don't be fooled by the controller, but your electric bike relies entirely on it for starting, moving back and forth, and stopping. So what are the reasons that can cause the failure of electric vehicle controllers? 1. Damage to power devices; The damage of power devices generally has the following possibilities: caused by motor damage; Caused by poor quality or insufficient selection level of the power amplifier itself; Caused by device installation or vibration loosening; Caused by motor overload; Caused by damage to the power device driving circuit or unreasonable parameter design.