WindyNation 100 Watt 100W Solar Panel for 12 Volt Battery Charging RV, Boat, Off Grid 100 Watt solar panel provides up to 100 watts of clean, free, renewable power Designed for RVs, cabins, homes, boats, back-up power and remote power use Perfect for 12 volt battery charging (see pictures in photo gallery for solar panel technical information and dimensions) 100W solar panel can provide 300-600 Watt Hours of power per day (depends on sunlight availability) Grade A solar cells; Heavy duty anodized aluminum frame, 5 year warranty on parts and labor, 25 year power warranty.