Never get stranded again with a weak battery in cold weather when you're using a SunForce (50012) 1.8 watt Solar 12v Battery Maintainer. The solar powered battery maintainer helps prevent batteries from loosing charge by adding a slow controlled charge during daylight. Great for boats or motor homes that sit idle or at dockside for days without use.

•Maintains Car’s, SUV’s, Boat, ATV, PWC Batteries
•Maintenance Free / Easy Installation
•Charges in all Weather Conditions
•Plugs into Cigarette Lighter
•Battery Clamps Included
•Mounts on Windshield with Included Suction Cups
•Made of Durable ABS Plastic & Amorphous Solar Cells
•Plugs into Cigarette Lighter with Alligator Battery Clamps Included
•Temperature Range: -40° to 176° F
•Max Output 1.8 Watts 125 Mah
Dimensions: (L x W x H) 19 5/8" x 61/2" x 1 1/8" (50 x 16.5 x 3 cm)
Weight: 1.8 lbs