... 3.Voltage:5V 4.Capacity:2200mAh portable power bank for mobile phone Basic parametersOutput Voltage: DC5.0V±0.25VOutput ... about)55g Product DescriptionThis portable power bank is a high-performance USB interface, mobile power, using high-quality ultra-thin ... mobile phone battery, iPhone4 battery , PSP, IPOD, MP3,MP4, PMP, GPS, Bluetooth, digital cameras .PDA battery portable power bank for mobile phone ...