... 5.CE,ROH P-3500 portable and mimi solar charger with photoelectric conversion device AboutThe principle ... the control circuit built-in 3.7Vlithium to rise to charge 5.5V through the output port ... phones, digital cameras, MP3, MP4, etc., applicable to the standby power of the travel, tourism, long- ... the electricity (AC100V-240V) or computer USB to the built-in rechargeable lithium battery, see light ...