ECO-WORTHY Portable Solar Trickle Charger perfect trickle charger for 12V batteries of cars, motorcycles, boats, snowmobiles, tractors, etc. Comes with the cigarette lighter adapter, 1 pair of battery clips, and 4 pieces of PVC suckers. Unique design-high quality clips to prevent short circuits. Charging 12V battery in an emergency, suitable for the vehicles in outdoor work, travel or camping training, and the vehicles are put for a long time. Easy to install and completely maintenance-free. Environmental protection and energy saving, built-in blocking diode to prevent reverse discharge, not only maintains the battery lifetime but also extends its usage life, keeping the battery from draining dead.