2000mAh External Battery Charger Power Pack for iPhone 4

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This portable battery will recharge and keep your Apple iPhone 4 battery topped up when you want it. It's easy to use, just switch on or off as you need it.

Smart Battery.
Light Weight, Thin Design.
Non-slip Comfortable Grip.
USB Micro Charge And Sync.
Rechargeable lithium polymer battery.
Standby Time: up to 390 hours.
Talk Time: up to 6.5 hours on 4G.
Internet Use: up to 6.5 hours on 4G; up to 8 hours on Wi-Fi.
Audio Play: up to 31 hours.
Video Play: up to 9 hours.
Capacity: 2000mAh.
Cell type: Li-Polymer battery.
Input: 5V = 1A.
Output: 5V = 0.8A.

1 for $42