48v20a Trip computer, controller, central unit. This part has many names. Sufficient or noticeable amount of power, speed and torque for your electric scooter. The hills don't feel painful. Accelerations are smooth. Includes electronic brake sensor and other adjustment features related to driving. The on-board computer collects the braking kinetic energy back into use by charging the battery. Easy to change yourself.
Meeko Pro runs on this central unit.