The WindyNation 10 Watt Solar Panel allows you to start producing free, clean power from the sun! Perfect for keeping 12 volt batteries charged on RV's, boats, ATV's, cabins and any other situation where you need to keep a 12 volt battery charged up and ready for use! All of WindyNation's solar panels come with a standard five year warranty on parts on labor. Additionally, WindyNation's solar panels carry a 25 year power warranty which guarantees the solar panel will produce 80% of its rated power output after 25 years. SEE PHOTO GALLERY FOR TECHNICAL SPECIFICATIONS AND DIMENSIONAL DRAWING.