Solar panel, 18V 20W portable solar panel powered by backup battery for car and boat outdoor use

Specification: Solar Power: 18V 20W Solar Panel Operating Voltage: 18V Solar Panel Operating Current: 280mA Solar Panel Open Circuit Voltage: 21.6V Solar Panel Open Circuit Current: 320mA Output Interface: DC Solar Cell Efficiency: 22% Product Size: 325 x 125 x 5mm Net Weight: 100g Packing List: 1 x 20W Solar Panel 1 x Cigarette Lighter Plug Charger 1 x Battery Charging Alligator Clip Cable 1 x Instruction Manual Instructions: Simply plug this solar charger into your vehicle's 12-volt cigarette lighter socket and position the panel to receive as much sunlight as possible. Or, if you prefer, use the included alligator clips to connect it directly to the battery. (You can mount this solar panel on your windshield using the two suction cups, or use the straps on the back to attach it to the visor.)