Wafer thin, lightweight, weather-, water- and corrosion-resistant and can mold to a curved surface (up to 4% curvature). These Semi-Flexible Solar Panels are made of high-efficiency monocrystalline solar cells and are strong enough to be walked on. For boats, RVs, camping and emergency backup, these panels can continuously recharge your 12 volt batteries with the power of the sun. Light enough to mount on a window with suction cups, and durable enough to mount permanently outdoors on a range of vehicles.