Extend your iPhone 4 Battery life and eliminate the iPhone 4 antenna issue with an iPhone 4 Battery Case by SaFPWR. iPhone 4 Battery Cases by SaFPWR use a state of the art power management system that works with your phone to optimize battery performance and more than double the run time of your iPhone 4 battery alone, plus include built-in antenna protection, so no lost calls or signal interference.

Don't let the lack of battery power limit your use of the phone's features. Having your iPhone 4 charged, antenna protected, and ready to go is no longer a worry with a SaFPWR smart rechargeable battery case.

Fashionable, functional, and easy to use iPhone 4 Battery Cases by SaFPWR.

Feature

    * Most powerful SaFPWR battery case using a 2,200 mAh SaFPWR smart battery
    * More than 200% increase in battery run time for your phone
    * Proprietary charge and automatic sync-through
    * Case prevents short-circuit, overcharge, over-discharge and malfunction for safe operation
    * Belt clip available on limited models

Technology

    * More power per milliamp hour than any other battery technology in the market
    * Intelligent battery that uses a revolutionary new power management system
    * The SaFPWR case determines when your iPhone 4 needs power and exactly how much power it needs. The intelligence of this system makes the SaFPWR battery case different than all other battery life extender products on the market. With the SaFPWR case, power is drawn from the external battery before the iPhone's battery is utilized. Other battery cases on the market simply supply a constant stream of power to the phone or use an on/off switch to control the flow of power.


SPECIFICATIONS

Dimensions - 5" H x 2.56" W X 0.82" D
Case Weight - 3.2 ounces
Talk/Internet Use - Up to an additional 6 hrs/
up to 7 hrs on Wi-Fi
Standby - Up to an additional 350 hrs
Video Playback - Up to an additional 8 hrs
Audio Playback - Up to an additional 28 hrs
Capacity - 2000mAh
Charge Time - 3.5 hours
Cycle Life - 500 cycles
Approved By - CE, NAC, RoHS
No memory effect
Warranty - Limited

Package includes Case, USB-charging cable, User's Manual
iPhone not included