Brunton Amorphous Solar Panel Max output: 5 watts (15 Volts / 350 mA) Use to trickle charge batteries in RVs, tractors, electric fences, wildlife feeders, cars, boats, ATVs, parked vehicles Weatherproof, made of durable ABS plastic, with ABS plastic frame Integrated battery overcharge protection Includes 10 ft cable, vehicle cable & battery clamps