... battery types: the lithium ion battery 3.Capacity: 1900 mAh 4.Input&Output:: 5 V / 800 mA Portable Power Supply for iphone ... ion battery2.Capacity: 1900 mAh3.Input: 5 V / 800 mA4.Output: 5V / 800 mA5.Size: 67 * 63 * 16 MM6.Weight: 70 ... . for i-phone,i-pad,i-pod,MP3,MP4,GPS ,cell phone,bluetooth device ,some tablet PC and other digital products ...