Portable and convenient power back up for your devices High transforming rate when turn light into electric power High transforming rate when discharge electric power into electronic equipments Professional circuit to protect over charge, over current and high temperature when charge the built-in battery by DC or sunlight Professional circuit to protect over discharge Intelligent voltage adjusting, it can output voltage and current on 4 different levels. It will restrict the output current depends on different volt when discharge Double short circuit protection Tri-coloured LED light to indicate charging or discharging Technical Parameters: