The Grape Solar 100-Watt Basic 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 mono-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 300-Watt Hours or 25 Amp Hours of charge per average day. The kit Includes: 1-piece Grape Solar GS-Star-100W 100-Watt mono-crystalline solar panel, a PWM-20A Grape Solar charge controller with USB output and DC load control, cables and manual.