Renogy Solar Kits can be used for several different purposes, from trickle charging batteries to acting as an emergency power backup system. Whatever the kit is used for, you can rest assured that you are purchasing a quality system. The Renogy 400W Monocrystalline Starter Kit was created for customers new to solar, or for those looking to expand on an existing power system. The Starter Kit is also ideal for several off-grid applications, including RVs, trailers, boats, sheds, and cabins – providing many benefits, including, but not limited to, quiet power production and grid independence. This kit comes with the tools necessary for a new system: four Renogy 100W 12V Monocrystalline Solar Panels, one 30A PWM Wanderer Li Charge Controller, one 20ft 10AWG Adaptor Kit, one 8ft 10AWG Tray Cable, three pairs of branch connectors, and four sets of Z-brackets. Add convenience and peace of mind to your next journey with a Renogy Starter Kit.