Mophie Juice Pack Case and Rechargeable Battery for iPhone 1G (Black)

Introducing the all-new mophie Juice Pack, a uniquely designed soft-touch, non-slip iPhone case and rechargeable battery. The juice pack offers you the convenience of charging your iPhone on the go and gives you up to twice the battery life than the standard iPhone battery. Charge your iPhone on the go, and get up to twice the battery life than the standard iPhone battery. Convenient and innovative case. The integrated LED status indicator tells you exactly how much power is left. Save the Hassle and Double the Power! Never be without your iPhone. Whether you\'re out of juice or just want to double your battery life, plug in your juice pack and double your time to rock, talk, surf, and send. Convenient and Innovative Case The case features a no-slip grip and soft-touch finish. Plus, by integrating the case and rechargeable battery in one convenient package, you have added safety for your iPhone. Smart Power Management System Use your iPhone adapter or any iPod connector to charge the Juice Pack--either without your iPhone or with your iPhone simultaneously. And Smart Battery technology instructs the iPhone to always drain out the Juice Pack first. When you\'re done with Juice Pack, simply detach it, and you still have a fully charged iPhone. Powerful and Safe Battery Cell The Juice Pack uses an advanced rechargeable Lithium-Polymer battery cell technology for added safety. Built-in circuitry prevents the Juice Pack from shorting, over charging, or malfunctioning even under the most extreme conditions. The battery cell is highly condensed and is able to store and deliver an incredible amount of juice in a small and compact package. LED Battery Status Indicator The integrated LED status indicator tells you exactly how much juice is left in your juice pack. Simply press the test button, and it will tell you how much power is left. The LED lights also indicate the charging status and charging progress. (Amazon)