Giosolar 100Watts 12v Monocrystalline Solar Panel 100W, 90mm of special cable with MC4 connectors attached, Off Grid 12 Volt 12V RV Boat- (Solar Panel) The modules can withstand high wind-pressure, snow loads and extreme temperatures. High reliability with guaranteed +/-3% output power tolerance. Easily accessible grounding points on all four corners for fast installation Great for all off-grid installations on vehicles or boats, also can be used for any standalone off-grid solar power system with batteries, such as a household solar system or solar lighting 25-year transferable power output warranty: 5-year/95% efficiency rate, 10-year/90% efficiency rate, 25-year/80% efficiency rate