This Semi-flexible Solar Panel delivers enough juice to keep your remote 12-volt battery charged, for boats, cars, RVs or other applications.They're wafer-thin and light in weight, and flexible enough to bend up to 20 to fit a curved surface. Nature Power Semi-flexible Solar Panels are weather, water and corrosion resistant, so they will stand up to the corrosive environment on a boat or the outside of an RV.This 3-watt panel is light enough to mount on a window with the included suction cups, and durable enough to mount permanently outdoors on a range of vehicles. Four grommets at the corners allow the panel to be attached using line or fasteners. At only 5 1/16" x 11 1/4", this panel easily fits in a window. No charge controller is typically required (recommended for panels 12-watts or higher).Includes power lead with quick-disconnect connector that plugs into the included battery clamps or 12V DC cigarette lighter plug (included with Nature Power 3-watt and 5-watt panels only). Includes blocking diode.Key FeaturesUltralight material is paper thin, measuring only .07" (2mm) thickFlexes up to 20 to curve and mold to any roofUp to 168 mA / 3W of output in bright sunTrickle charger is able to keep your 12V batteries topped offPermanent installation without the need to drill holesTemporary installation with included suction cupsWeighs just 6.3 ozTwo-year limited warrantyInstruction Manual