Features: [High-efficiency solar panel] This product adopts a new conversion method, with the same area and power, the solar output working current is doubled, providing good performance even in insufficient light, and the internal diode can prevent electricity leakage at night. [Long service life] Advanced packaging materials and multi-layer laminates improve battery performance and extend service life. The modules can withstand high wind pressure, snow load and extreme temperatures. Mainly used for charging and recharging the car battery Material: PET + monocrystalline silicon cell Waterproof grade: IP65 Solar energy conversion rate: 22% Maximum power: 10W Working voltage: 18V Open circuit voltage: 21.5V Working current: 0.55A. Short circuit current: 0.63A Product net weight: 350g Product size: 285X265X2mm NOCT (nominal operating temperature of the battery): 40-85°C 40-85°C Working temperature: -35-60°C packing list 1 x solar panel 4 x suction cups 1 x car charger 1 x battery clip