Description: --It can be used as an alternative charger for cars trucks caravans boats motorcycles RV batteries or any 12V lead acid battery. --It is waterproof and can be placed outdoors. --There are built-in diodes in the alligator clip to help prevent reverse charging. --You can install this item in your car and keep charging during the day. --Provides 2 alligator clips and charging cable for all kinds of equipment emergency lights advertising lights traffic lights electric fans solar water pumps motorcycles boats etc. --Applicable to: mobile phones mobile power packs laptops tablets GPS cameras USB fans USB lights etc. Specification： --Colour: Black --Material: Panel: Monocrystalline silicon --Size: 21.5*18.5cm --Power: 20W --USB output: 5V 2A (maximum) --Solar output: 12V --Solar panel type: solar --Conversion efficiency: 23-24% --Product interface: USB DC --Output interface: DC / dual U --No-load voltage: 14V DC and USB 5.2V --Load voltage: 12V DC and USB 5.0V --Output current: 600 mA (max) --USB 2.0 output: 5V 600mA Instructions： 1. First the solar panel surface of the solar panel faces the sun and the back USB output surface has a red light indicating that the current output is normal. 2. Plug the USB 2.0 cable into the USB output port and the USB output standard 5.0V DC voltage. 3. Connect the mated DC alligator clip and the alligator clip outputs a DC voltage of 12v (14V at no load). Note: The positive and negative crocodile clips cannot be connected or touched during use which may cause short-term heat or burn the line. 4. With the mountaineering bag this product is suitable for low-power products with 5V power supply or low-power products with 12V power supply. Package includes: 1x Solar panel 1x Alligator clip 1x Cigarette lighter