15 Watt Solar Battery Charger

Works with Automobiles, RVs, Boats,Tractors, ATVs, Electric Fences, Deer Feeders, Telemetry, and More Maintenance Free / Easy Installation 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