22w Solar Panel 12v Maintainer Battery Charger Kit for Boat, RV, Car Features: Can be used as an alternative charger for cars, trucks, RVs, boats, motorcycles, RV batteries, or any 12V lead-acid batteries. It is waterproof and can be placed outdoors. Built-in diodes in the alligator clip prevent reverse charging. You can install this item in your car and continue charging during the day. Provides 2 alligator clips and a charging cable for all types of equipment, emergency lights, advertising lights, traffic lights, electric fans, solar water pumps, motorcycles, boats, etc. Specification: Color: Black Panel: Monocrystalline Silicon Maximum Power (Pmax): 22W Maximum Voltage (Vmp): 18V Maximum Current (Imp): 4A Output: USB DC 5V & DC 18V (The control unit adjusts the voltage to 14.4V output) Waterproof: IP65 Size: 7.25 inches width and 8.5 inches length Tips: Please allow 1-3cm measuring error. Photo color might be a little different from the actual product due to color display of different monitors. Product Includes: 1 X Solar Panel 1 X Alligator Clip 1 X Car Connectors 2 X Carabiner Hooks