A 80 Watt Folding Solar Panel from Nature Power allows you to take advantage of a free and natural energy source, the sun, to power your electronics and 12 volt batteries. Solar panels offer an environmentally friendly alternative to keeping all your gadgets fully juiced and will even help cut down on electric bills by lowering your dependence on home AC outlets. It uses rugged monocrystalline solar panels but its folding design conveniently allows for it to be a fraction of the size of a traditional solar panel. Fully extended this solar panel measures (L) 52.7″ x (W) 35.5″ x (H) 0.2″ and when folded it is only 17.7″ x 11.5″ x 1.9″ making it very easy to travel with or store out of the way. O-rings in the corners of the solar panel are for mounting the panel or even clipping to a backpack or bag while hiking. The 80 Watt Folding Solar Panel is weatherproof and includes 10 various make and model laptop adapters and a clamp for use with 12V batteries. It is important to note that this product requires the use of a charge controller (sold separately) to protect your batteries and electronics from overcharging.