Feature:1. Solar panel adopt waterproof design, IP65 level, portable and light, easy to carry2. Solar charger solar cell efficiency up to 20%, dual output voltage 18V5V, power is 15W3. Very suitable for battery maintenance for cars, motorcycles, boats, ships, campers, greenhouses, and home charging4. Adjustable mounting bracket, adjustable solar panel angle, absorb as much sunlight as possible and generate more electricity5. The drilling holes on the panel bracket are used for quick installation and fixation, suitable for any place parallel to the ground or perpendicular to the floorSpecification:Item Type: Flexible Solar Panel KitType: Laminated moduleInterface: USB + DC interfaceWaterproof Rating: IP65Power: 15watts (W)Working Current: 800MAWorking Voltage: 18 (V)System Voltage: 20 (V)Open Circuit Voltage: 20 (V)Short Circuit Current: 900 (A)Working Voltage: 5V (0.2V)Short Circuit Current: 1.15ATemperature Coefficient: 0.05%Voltage Temperature Coefficient: -0.33%Module Power Temperature Coefficient: -0.23%Component Operating Temperature Coefficient: 45 (5)Output Voltage: 18V 800MA and 5V 2ASolar Panel Size: Approx. 420 x 190 x 3mm / 16.5 x 7.5 x 0.1in.Package List:1 x Solar Panel4 x Suction Cup2 x Hook1 x Charging Cable1 x Battery Cable ClampNote:1. This unit is not applicable when your vehicle battery is dead. As a solar battery maintainer, the solution is to charge your battery to extend its life expectancy.2. In addition, it is recommended to unplug the charger at night, in case the blocking diode cannot prevent all reverse discharges.