Groupon Goods is offering the Mophie Boost 2000mAh Portable Battery for iPhone 4/4S for only $20. This external battery pack retails for upwards of $50. The design of the pack is very similar to an iPhone 4, making it a perfect companion.
A slim, pocket-sized backup battery recharges iPhones at home, on the road, or in lieu of a lightning storm. While charging, the Boost’s innovative design can be configured into an iPhone stand that holds your device in portrait mode. The pack, when plugged into a computer or other power source, is rechargeable for over 500 cycles.
- Slim, pocket-sized battery pack recharges iPhones at home or on the road
- Charges all iPhone models except for the iPhone 5
- Acts as a base to hold devices in portrait mode when charging
- Included USB cable recharges battery pack; good for over 500 cycles
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