Creates 5 watts of electricity for charging and maintaining 12-volt batteries * Works with automobile, tractor, electric fence, deer feeder, boat batteries and more * Made of durable ABS plastic and amorphous solar cells * Weatherproof amorphous panel charges in all daylight conditions-even on cloudy days * Includes 15" x 14-1/2" amorphous solar panel, 4 pre-cut holes for easy installation, 4 stainless steel screws, 9.5 ft wire, 12V DC plug, battery clamps and Quick Connect technology