This solar panel converts sunlight to electricity was manufactured using a transparent cell protector, EVA pottant and a PVF backing to provide maximum protection from the most severe environmental conditions. The entire laminate is framed in a heavy duty anodized aluminum frame to provide structural strength and ease of installation.This also enables more wattage per square foot , lower mounting cost, and allows panel last for decades.It is perfect for charging battery,Diodes are pre-installed in junction box and a pair of cables with MC4 connectors comes with the panel.Output: 50W watt(depends on sunlight availability),