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Never worry about dying batteries in the day again with the Eton Mobius iPhone 4 Battery Pack.

With most people constantly on-the-go, Eton Mobius is making life easier with their solar-powered iPhone 4 charger. The battery pack attaches to the back of the phone and will charge instantly with the power of the sun. The Eton Mobius iPhone 4 charger may make the piece a little bulky, but it's still better than running around looking for an outlet or a computer to charge it with.