The Grape Solar 100-Watt Off-Grid Solar Panel Expansion Kit is perfect for adding to existing Grape Solar Off-Grid Kits. Whether you need more power for your existing items, or want to run more items off of solar power, the Expansion Kit is the way to go. Made with high efficiency mono-crystalline solar cells for years of service, this solar kit makes it easy to add panels to your system and is virtually maintenance free. An anodized aluminum frame and a sealed junction box make the panel weatherproof for outdoor use. This system will add approximately 300-Watt Hours or 25 Amp Hours of charge per average day to your existing system. This kit includes: 1-piece Grape Solar GS-Star-100W 100-Watt mono-crystalline solar panel, a 15A in-line fuse, and a pair of MC4-comparable T-Branch Connectors.