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A fully charged battery has no capacity to store more energy. Because energy is dissipated by storing it back in the battery, this functionality only works when the battery is not fully charged. Nearly all controllers have this capability. Controllers range from having sustained max outputs of tens of volts and just a few amps all the way up to 100 volts and 400 amps on Rion hyperscooters.Ĭontrollers that provide regenerative braking (or electronic braking) capabilities are also capable of routing power back from the motor into the battery when activated. For most scooters, the controller also provides regenerative braking capabilities.Ĭontrollers are rated in terms of current (measured in amps) and voltage (measured in volts), with higher-current, higher-voltage controllers being capable of driving more powerful scooters. It receives input from the throttle and precisely controls the flow of current from the battery to the motor. The controller or electronic speed controller (ESC) is an electronic circuit that controls the speed of the motor in an electric scooter. Keep reading to learn more about how this unassuming component keeps you moving down the road. Electric scooter controllers regulate flow of power from the battery to the motor and are a major factor in determining a scooter’s performance capabilities.