Great 15 Watt Solar Charging Kit. This Glass Panel Solar Charger works from solar energy. It has 15 Watts of solar charging power. Use for many battery applications. Includes a 7 Amp Charge Controller to keep from overcharging your battery. • Works with Automobiles, RV’s, Boats, Tractors, ATVs, Electric Fences, Deer Feeders, Telemetry, and More • Maintenance Free / Easy Installation • Includes: - Pre Cut Holes for Easy Installation - 4 Stainless Steel Screws - Battery Clamps - CLA Adapter - 12ft Wire - 7 Amp Charge Controller • Works in All Weather Conditions • Ultra Bright Blue LED Provides Charging Indication • Built-in Blocking Diode Protects Battery Discharge at Night • Made of Durable ABS Plastic with an Amorphous Solar Cell • Temperature Range: -40&730; to 176&730; F • Max Output 15 Watts 1 Amp