Coleman 18W Solar Battery Charging Kit With 7A Charge Controller Charge Your 12V Batteries With The Sun"s Energy & Regulate That Power In Order To Improve Your Batteries Lifespan Works With Automobiles RVs Boats Tractors ATVs Electric Fences Deer Feeders Telemetry & More Includes Pre-Cut Holes For Easy Installation 4 Stainless Steel Screws Battery Clamp Adapter 12" Wire 7A 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 Maximum Output 18W 1 2A Maintenance Free Easy Installation.