Features Solar charger solar cell efficiency up to 20%, dual output voltage 18V-5V, power 15W. The drilling holes on the panel bracket are used for quick installation and fixing, suitable for any place parallel to the ground or perpendicular to the ground. Very suitable for battery maintenance of cars, motorcycles, boats, boats, RVs, greenhouses and home charging. The solar panel adopts waterproof design, IP65 level, portable and lightweight, easy to carry. Adjustable mounting bracket, adjustable solar panel angle, absorbs as much sunlight as possible and generates more electricity. Specification: Item Type: Flexible Solar Panel Kit Type: Laminated Module Interface: USB + DC interface Waterproof rating: IP65 Power: 15 watts (W) Operating current: 800MA Operating voltage: 18 (V) System voltage: 20 (V) Open circuit voltage: 20 (V) Short circuit current: 900 (A) Operating voltage: 5V (±0.2V) Short circuit current: 1.15A Temperature coefficient: ±0.05%℃ Voltage Temperature Coefficient: -0.33%℃ Module Power Temperature Coefficient: -0.23%℃ Operating temperature coefficient of components: 45℃(±5℃) Output voltage: 18V 800MA and 5V 2A. Solar panel size: approx. 420 x 190 x 3 mm/16.5 x 7.5 x 0.1 inches. Package list: 1 x Solar Panel 4 x Suction Cups 2 hooks 1 x Charging Cable 1 x Battery Cable Tie Tips: 1. This device is not applicable when your vehicle's battery is running out. As a solar battery maintainer, the solution is to charge your battery to extend its life. 2. In addition, it is recommended to disconnect the charger at night, in case the blocking diode could not prevent all reverse discharges. Package List 1 x Solar Panel 4 x Suction Cup 2 x Hook 1 x Charging Cable 1 x Battery Cable Clamp