The Coleman 6 Watt Solar Battery Trickle Charger is the ideal solution for maintaining 12 Volt batteries for your cars, RVs, tractors, ATVs, electric fences, deer feeders, boats, and more. This unit is completely weatherproof and charges in all daylight conditions, even in the shade. The built-in blocking diode protects battery discharge at night. A perfect solution for battery maintenance, this unit is completely maintenance free and easy to install. The complete kit includes: 6 Watt amorphous panel, 12 Volt DC plug, battery clamps, mounting hardware, and Quick Connect Technology. It has a maximum power output of 6 Watt, 400 mAh.