Monocrystalline 20W Solar Fan Mobile Phone Car Battery Solar Panel Features: solar panel -Spare chargers for cars, trucks, caravans, ships, motorcycles, RV batteries or any 12V lead-acid batteries. -Waterproof and can be placed outdoors. -There is a built-in diode in the battery clip to help prevent reverse charging. -You can install it in the car and continue charging during the day. -Provide 1 battery clip and 1 charging cable for various equipment, emergency lights, advertising lights, traffic lights, electric fans, solar water pumps, motorcycles, ships, etc. Controller: 1. Built-in industrial microchip. 2. Large LCD screen with adjustable parameters. 3. PWM battery charging. 4. Built-in short circuit protection, open circuit protection, reverse protection, over protection. 5. Dual MOS reverse current protection, low heat generation. 6. System control parameters are adjustable. Specification: solar panel -Power: 20W- Panel: Monocrystalline silicon Product size: 210 X175X2.5mm Packing size: 250 X200X35mm Weight: 300g USB output: 5V DC output: 18V The package includes: 1 solar panel 1 battery clip 1 car charger