1700Mah Capacity IPhone 4 Extender Battery Case With Short Circuit Protection For IPhone 4S

Advanced Battery Technology
Hi-tech, A-grade thium polymer battery that can recycling for more than 500times. Built in overcharge, short circuit and temperature protection. No memory effect. Charge your device smartly.

BatteryStatus Indicator
To check the power level of the battery case, just push the button and the LEDs will indicate the status clearly.

Power On/Off
Long push the button to turn the charging on or off. So you can control the battery case to charge the iPhone or not.

Reliable Quality
We only use A-grade battery cells. We use Seiko chipset to manage the power. All product come from our ISO9001 certified factory. Every piece of product are through functioning test and burn-in test to ensure quality. We prepare spare parts for distributors to ensure customer satisfaction.

MFi
We are Apple authorized MFi licensee and contract manufacturer. We can help you to bring to branded product to market fast with MFi certification in a very cost effective way.

This is for iPhone 4 portable power station with 1700Mah capacity. You can charge 

by USB port and do data transmission       

Specifications:

1) Work for iPhone 4 

2) With 1700Mah capacity

3)USB charging and do data transmission

Almost Double the Powerof iPhone 4/4S
This  battery case for iPhone 4 and 4S virtually doubles the power available to play, talk, surf and blog.
A full charged case gives you:

-Up to an additional 5 hours on 3G, up to 10 hours on 2G, of Talk Time
-Up to an additional 30 hours of Audio Playback
-Up to an additional 5 hours Video Playback