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Excellent glossy iPhone battery extender (aka juice pack, iphone battery pack), allows you to charge an entire iphone up to 100% battery from flat. Impressive device and much needed to counteract the appauling battery life of the iPhone

iPhone battery packs are great for extending the life of a iPhone, this is great as a preventative measure in order to prolong the usable life of the iPhone battery, as a way to increase the iPhone battery life when spending long time away from a charging point and of course for heavy users who routinely reach the dreaded 0-10% battery life frequently and feel restricted by the iPhone battery life

Specifications

Compatibility: iPhone 3G & 3GS
Weight: 66.5g
Capacity: 1900mAh
Cell type: Li Polymer battery
Dimension:109×63×20(mm)
Output voltage:5V
Output current:700 mA max
Cycle life: 500times
Function& character:
power check& indication
power switch
protective and powerful
Signature:
Standby Time – Up to 380 hours
Talk Time – Up to 6.5 hours on 3G and 3GS
Internet Use – Up to 6.5 hours on 3G | Up to 7 hours on Wi-Fi
Audio Playback – Up to 28 hours
Video Playback – Up to 8 hours