In today"s world, harnessing natural green energy is more important than ever. Cyclops Solar Solutions offers a complete line of solar products for just about every need. Use your solar panel as portable power, back-up power, battery charger and a trickle charger. The possibilities are endless! This solar panel has a maximum charge of up to 20 watts/1 Amp per hour. You can link multiple like units together for more output and it efficiently charges in all weather conditions including overcast weather. It is designed for permanent or semi-permanent mounting. Solar power is clean and pollution-free, and maintenance-free operation unlike gas generators and prevents the natural voltage drain of batteries over time keeping your 12 volt batteries charged up. Dimensions: 12" x 34.75" What‘s in the Box: 12V DC Adaptor, 12V DC socket, battery clamps, extender cable and stainless steel mounting screws (qty 4).