Sunforce 39626 160-Watt High-Efficiency Polycrystalline Solar Power Kit High-efficiency polycrystalline solar cells from Sharp provide advanced power output Weatherproof solar cells feature durable aluminum frames with tempered glass coverings Includes two 80-Watt polycrystalline solar panels, a 200-Watt power inverter, a 30-Amp digital charge controller, a voltage tester, and a wiring kit with mounting accessories 25-year solar panel warranty Kit is easy to install and virtually maintenance-free