1.mini solar charger 2.photoelectric conversion device 3.Li-Polymer rechargeable battey cell 4.USB output 5.CE,ROH P-3500 portable and ... mimi solar charger with photoelectric conversion device AboutThe principle of the P-3500 Mobile ... rise to charge 5.5V through the output port for digital products,likes Iphone, mobile phones, digital cameras, MP3, MP4, etc., ...