NOVELTY - The electrical system includes at least one supplemental rechargeable battery (22), electric motor (12), electromagnetic generator (16), direct current (DC)-alternating current (AC) converter/inverter (20), at least one photovoltaic cell and at least one wind turbine. The supplemental rechargeable battery and electromagnetic generator are in electric communication with DC-AC converter/inverter, with electromagnetic generator operationally connected to the wheals shaft. The system is in output communication with main rechargeable battery of electrical appliance.    USE - Improved energetic efficacy electrical system for generating power to rechargeable battery from versatile energy sources such as external natural energy sources and internal energy sources.    ADVANTAGE - Rechargeable batteries are recharged using improved energetic efficacy electrical system by electrical, natural and mechanical energy sources which are independent of or recycled from the operating device. Enables efficient use of external and internal energy sources by indirect conversion of energy to power by recharging relatively small capacity battery. Efficient use of energy input in recharging batteries of electric machines and devices is based on the speed of recharging the supplemental batteries, which depends also on their capacity. Relatively small capacity of the supplemental batteries translates to their faster complete recharging. Maintains minimum charge in the main battery at all times and independently of the external and internal energy sources since the supplemental rechargeable battery/batteries store sufficient power to operate the starter motor, which needs less electrical energy relative to start the engine. Supplemental and main batteries can discharge right back to the grid in case of overflow production of power in the device which benefits the owner of the device with credits for the power supplied back to the power company and the power company enjoys the supplemental power input. Enables monitoring and control of the length of time period for recharging the batteries in order not to overheat them. Appropriate automatic periods of time of operation are set and controlled by controller at the input and output of the generator unit.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view of the generator unit.    Generator unit (10)    Electric motor (12)    Electromagnetic generator (16)    DC-AC converter/inverter (20)    Supplemental rechargeable battery (22)