- This portable backup battery will recharge and keep your iPhone 4G battery topped up when you want it.
- Easy to use, just switch on or off as you need it.
- The 1900mAh rechargeable lithium polymer battery add extra back-up strength to the one that is in your iPhone 4G.
- Enhance iPhone 4 signal.
- Power check & indication.
- Capacity: 1900mAh.
- Cell type: li-polymer battery.
- Talk time:up to additional 6 hours.
- Standby time:up to additional 230 hours.
- Audio playback:up to additional 30 hours.
- Video playback:up to additional 8 hours.
- Internet Use:up to additional 5.5 hours(3G); up to additional 8 hours(Wi-Fi).
- Output voltage: 5V.
- Output current: 500 mA max.
- Cycle life:500times.
- weight:160 g
- size:16.4*9.7*2.3 cm
- 1 x 4 LED Flashlight 1900mAh Power Skin External Battery Back Case for iPhone 4G
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