FeatureIt can be used as an alternative charger for cars, trucks, caravans, boats, motorcycles, RV batteries or any 12V lead acid battery.It is waterproof and can be placed outdoors.There are built-in diodes in the alligator clip to help prevent reverse charging.You can install this item in your car and keep charging during the day.Provides 2 alligator clips and charging cable for all kinds of equipment, emergency lights, advertising lights, traffic lights, electric fans, solar water pumps, motorcycles, boats, etc. SpecificationColor: BlackPanel: Monocrystalline siliconMaximum Power (Pmax): 22WMaximum Power Voltage (Vmp): 18VMaximum Power Current (Imp): 4AOutput: USB DC 5V & DC 18V(Control Unit adjust the voltage to 14.4V output)Waterproof: IP65Size: 7.25 inch width and 8.5 inch length Package include:1 X Solar Panel1 X Crocodile Clip1 X Car Plugs2 X CarabinersTips:1. Please do not scratch the surface of the solar panel with a sharp object.2. When charging the charger with solar energy, please place the solar panel upwards in direct sunlight to ensure the charging effect.3. Please do not put the charger outdoors on rainy days to avoid short circuit. The front of the solar panel is waterproof, but it is best not to enter the water at the USB and DC interfaces.