Macally JBoxMini Compact External Cell Phone Li-ion 1700 mAh Battery Backup

The right amount of power when you're on the go. Charge up the battery so you can charge your iPhone or iPod anywhere! Add extra hours to your iPhone or iPod and prolong the life of your other portable devices when you•re camping, traveling or any other time you cannot access a wall outlet. Battery Rechargeable: Yes Battery Chemistry: Lithium Ion (Li-Ion) Battery Capacity: 1700 mAh Output Voltage: 5 V DC Height: 7.0" Width: 2.0" Depth: 5.0" Additional Information: Cell phone, PDA and MP3 with USB charging capability or any products that can be charged with USB ports. Output Current: 1200mA Maximum Built-in battery tester button with battery level LED indicator