In an electric vehicle having a primary battery powered source of energy with a primary electric motor driven and connected to one or more ground engagement wheels of the electric vehicle, has a device called a sprocket used for collecting energy form the inner rim edge of the rear wheel of the electric vehicle. This sprocket mechanism device collects this energy then transfers that energy to alternators one and two on its mounted framework in the trunk compartment by way of a chain. The two alternators with its sitting pilot voltages, then transfer it by required electrically conductive cables sending energy to the battery bank source thus completing the on board charging system cycle.