... -Polymer rechargeable battey cell 4.USB output 5.CE,ROH P-3500 portable and mimi solar charger with photoelectric conversion device AboutThe principle ... phones, digital cameras, MP3,, MP4 and digital products. Connection with a rechargeable solar charger and cell phone or digital camera, MP3, MP4 ... 2 Under sunshine for minutes P-3500 portable and mimi solar charger with photoelectric conversion device