Controllers are electronic circuits that Handle the speed of the scooter by regulating the flow of electricity in the battery to the motor. If the throttle is pressed, the controller decides how swiftly the motor responds And the way fast the scooter can speed up. In advance on the https://www.electricscooter.ltd/self-balancing-electric-scooters-11-inch-e-scooter-with-hydraulic-brakes/