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iPhone Power Slider Case
Folks who are always complaining that the iPhone doesn’t give you enough mileage per charge will want to check out the Power Slider case, which has an integrated battery, aimed at letting your iPhone last longer. It might make your iPhone look a tad bigger, but it seems like a fair trade for more battery life, and the cover seems to look like it belongs with the iPhone’s color scheme. There are 5 LED indicators to indicate the power level, and a pass-through port will allow you to sync the phone without having to remove the case itself.