The Sunforce 50012 1.8 Watt Solar Battery Maintainer gives you another reason to love the sun — it’ll help keep your car’s battery charged. Just plug this helpful 1.8-watt solar charger into your vehicle’s 12-volt lighter socket and position the panel to pick up the most daylight possible. Or, if you prefer, use the included alligator clips to connect it directly to the battery, so you can keep your lighter socket open for cell phone chargers or other accessories. Regardless of how you hook up the battery maintainer, you’ll never get caught off guard without the juice you need to start your car. This device is designed to work with automobile, all terrain vehicle (ATV), personal water craft (PWC), and boat batteries, and is even effective on cloudy days. The 50012 is made of durable ABS plastic and amorphous solar cells, measures 6.5 x 1.25 x 18 inches (WxHxD), and has a maximum temperature range of -40 to 176-degrees Fahrenheit.