The Black Gate Hunting Solar Panel has a glass surface making it more efficient at recharging in lower light settings. The solar panel requires a first charge by USB cable before use. The internal source for the solar panel is a high-capacity lithium battery to ensure long use without little maintenance. You get a tree mount as well as a chew-proof threaded cable to attach the solar panel to your existing cameras right away. Features12 VoltIP66 waterproofing2,000 mAh High capacity Lithium BatteryCharges via a USB cable or Full SunlightCharge level indicatorThreaded DC cableCompatible with all Black Gate's Cellular Trail CamerasCommon 5.5mm X 2.2mm pluginDimensions: 9" x 6.5" x 1"