Description: 1.Wide Use: It has a single crystal r chip, lightweight and portable, suitable for outdoor travels. Can charge automobiles, boats, motorcycles, electric fans, emergency lights, solar water pumps, RV batteries or any 12V lead acid battery. 2.Dual USB Output Ports: The back junction box has dual USB ports that can charge two USB devices fast at the same time. The solar panel can charge your phone in emergency. 3.High Charge Efficiency: The solar panel with high conversion rate of 24% charges fast in the direct strong sunlight. .