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Today I’m so glad to introduce you a great product iPhone 4 external battery pack from PowerSkin, which solve two big problems.

As iPhone 4 has different from the previous generation iPhone 3G / 3GS in shape, so most older battery pack can not work with the new iPhone 4 device. After iPhone 4 become more and more popular nowadays, finally there is a corresponding product that is called Mili PowerSpring 4 which is from the British a special battery / charge manufacturer PowerSkin.

The battery pack capacity is 1600mAh, while not enlarged the thickness too much as 18mm, may provide additional 360 hours standby time / 6 hours 3G call / 10.6 hours WiFi Internet access, video playing time; the official prices is £ 54.99, and the Amazon just 85 U.S. dollars, if you are interested Amazon will be a better choice.

See larger image MiLi Power Crystal HB-A10 External Battery Power Bank for iPhone 4 / 4S, iPod, Blackberry phones, HTC phones, Motorola Droid series, Xperia and Other Mobile Devices (Black) (Electronics) List Price: $44.95 USD New From: $27.00 In Stock