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 utilizing a sprocket and chain for collecting energy from the inner rim edge of the rear wheel of the electric vehicle. This sprocket mechanism device collects this energy then transfers that energy to a plurality of alternators on mounted framework such as in the trunk compartment by way of a chain. The alternators with their sitting pilot voltages, then transfer it by electrically conductive cables to the battery.