... into electricity, the principle of A-1400 solar charger is: convert light energy into electrical energy by using the photoelectric conversion panels ... mobile phones, digital cameras, MP3,, MP4 and digital products by a control circuit, also can approve the mains (AC100V-240V) ... be full.UsageThe fully recharged built-in battery can be powered to the Iphone, mobile phones, digital cameras, MP3,, ...