Higher Efficiency: The Panel has regular bumps on the surface. It forms secondary light transmission, absorb a lot of solar energy, and the photoelectric conversion efficiency is as high as 95% Charging Visualization: The indicator lights of the solar charger help you better distinguish the usage status of the solar charger Intelligent Protection: The solar panel has a built-in microprocessor. It provides multiple protections. It prevents reverse charging, and it is safely used for charging and maintaining 12V batteries The package includes a three-piece SAE cable kit, plug, and play. Combiners and suction cups meet different installation needs. Suitable for cars, RVs, motorcycles, ships, snowmobiles, etc More Durable: The Panel is waterproof and dust-proof. The PCB is used as the bottom plate, which is stronger and not easily broken (a broken panel will reduce the charging efficiency). We offer 1-5 Days Free shipping 30-Days Free returns