Coleman 58232 36 Watt Folding Solar Panel Helps charge 12V batteries Two 18 watt solar panels hinged together; Portable and lightweight unit conveniently folds in half for easy travel and storage Works with RV's, boats, remote & back-up power Made with shatterproof tempered glass, rugged aluminum frame and amorphous solar cell; Amorphous panels are weatherproof and work in all daylight conditions-even on cloudy days Complete kit includes:brackets and screws, battery clamps, CLA adapters, and 7 amp charge controller to protect battery from overcharge and discharge