External battery cover for iPhone 4 (2300mAh)
Output voltage: 5V
Output current: 500mA
Input voltage: 5V
Input current: 500mA
Holding time for calling:3G network > 7 Hours /2G network > 13.5 Hours
Time for net play:3G net work >7 Hours / Wi-Fi >8 Hours
Time for music play:more than 30 hours
Time for video play:more than 8 hours
Input charging: connect the mini USB port with a USB cable connect on to the computer
or USB AC adapter for charging this external battery case
Standard accessory: 1pc screen protector, 1 standard 2.0 USB cable
Optional color: red, blue,black, white.
Optional color: (Black, red,blue), also pink and white can do with bulk order
Our company produces a new iPhone backup power. It is compatible for 4G iPhone charge without the need to get iPhone out by using an external devices.
The power belt clip uses high strength materials, arc-type fitting design, fashion color with charge and protects shell two in one function.
It has data modem and intelligent switch, conected with PC and ITunes, long-life and safety!
It must be your first choice for your iPhone 4G back up power!
The backup power's capacity is 2000mAh, which enables Power for iPhone
a) 210 standby hours,
b) 10 talking hours,
c) 4.5 hours on 3G network,
d) 7 hours power supply on Wi-Fi,
e) 28 hours aduio playing,
f) 7 hours video playing.
This is the best backup power for iPhone 4G in the market.