The 10-Watt 12V Solar Car Battery Charger is the perfect solution for charging the batteries of motorcycles, automobiles, snowmobiles, tractors, and more, which is not only environmental protection and energy saving, but also can maintain the battery lifetime, extending its usage life. It can also charge other 12V rechargeable batteries in emergency, suitable for vehicles in outdoor work or travel or camping training. This solar panel is easy to install and completely maintenance-free. You can simply use it by plugging it into the 12 volts lighter socket with a cigarette lighter plug (not included in the packaging). Or, if you prefer, use the included alligator clips to connect it directly to the battery.