The Grape Solar 150-Watt Off-Grid Solar Panel Kit is ideal for a variety of DC applications, including RVs, boats, 12-Volt battery charging, and LED lights. Made with high efficiency crystalline solar cells for years of service, this solar kit is easy to install and virtually maintenance free. An anodized aluminum frame and a sealed junction box make the panel weatherproof for outdoor use. This system will provide approximately 450-Watt Hours or 37.5 Amp Hours of charge per day. The kit Includes: 3-Piece Grape Solar GS-Star 50-Watt Monocrystalline solar panel, a PWM-20A Grape Solar charge controller with USB outputs and DC load control, cables and manual.