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Extend your battery life up to 40 hours with the Rechargeable Portable Power Pack 4400mAh from I/OMagic. With a sleek and compact form factor, it easily slips into your pocket and is perfect for charging your Smartphone, MP3 Player, Camera, and most other USB charged mobile devices.
Simply connect the included Micro USB cable (or your own cable) and get a charge anywhere! Portable and lightweight, this rechargeable Lithium Polymer battery has Intelligent Protection to prevent overcharging & short circuits. Charge it over and over again and get a full charge every time.