Description never be without charge for your iphone ipad mp3 mp4 and other mobile devicesdual usb output portssafe reliable and perfect for using when travelling and during outdoor activitiesbuilt in 8400m ah high capacity rechargeable li polymer batterydual usb output means you can charge 2 devices simultaneously4 led power indicator specifications input voltage dc 5 0vinput current 1000m ah max capacity 8400m ah output voltage port a 5 3voutput current port a 1000m aoutp