Nature Power 7.5-Watt Solar battery trickle charger takes the sun's energy and turns it into electric current . This solar panel is a way to keep your vehicles batteries (not included) topped up during storage. A great alternative to traditional battery chargers since no AC power is required, you will not need to run extension cords or use up valuable driveway space for stored vehicles. Completely weatherproofed this solar panel can be installed outdoors permanently Mounting hardware is included.