for iphone portable external battery Power bank

1.portable external backup battery for iphone 2.Emergency battery 3.Power Case Bank 4.phone Accessories for iphone 5.OEM

portable external backup battery for iphone4

specifications:

 

Chemistry	Lithium Plymer Battery(no memory effect)
Charge Time	3.5 hours
Capacity	1900mah
Cycle Life	at last 500 cycles
Talk Time 3G network	8hours
Talk Time 2G network	16hours
Stand by time	317ours
Internet 3G	7hours
Internet Wi-Fi	11hours
Vedio	11hours
Audio	44hours
Weight	2.40 oz
Length	5.07"
Width	2.51"
Depth	0,68"

features

 

- 1900 mAh lithium polymer SaFPWR smart battery, rechargeable for over 500 cycles.- Intelligent energy management technology (EMT) increases iPhone run time by more than 200%.- More power per milliamp hour (mAh) than other technologies in a thin and lightweight case.- Allows iPhone to charge and sync while in the SaFPWR smart battery case.- Built-in short-circuit, overcharge, over discharge, energy flow back, and malfunction protection.- Case is built to exact specifications to provide secure fit and proper function of iPhone.- High-quality leather offers distinctive, yet durable, looks.- Openings for iPhone charge port, microphone, speaker, camera, and proximity sensor.

 

 

More than Doubles Battery Life1900 mAh capacity, advanced battery technology delivers an incredible amount of “juice” in a small form factor, more than doubling battery life. Users will experience:- Up to 8 additional hours talk time on 3G; 16 hours 2G - Up to 7 additional hours internet use on 3G; 11 hours WiFi - Up to 44 hours additional audio playback - Up to 11 hours video playback

Battery Extender and Case in OneThe juice pack plus for iPhone 4 combines rechargeable external battery power concealedinside of a protective form-fitting case. It offers the full protection of a hard-shell casewith an ultra-thin, light-weight, low-profile design and shock-resistant band.

Standby/Charging SwitchFeatures a simple toggle switch allows for standby and charging mode so you only haveto use the juice pack plus battery when you need it!

Efficient ElectronicsEmbedded electronics results in no signal interference with the iPhone 4.

Acoustic Sound EnhancementThe case design acts as a virtual speaker box, redirecting sound from the bottom of the iPhone 4 to the front, resulting in a richer, fuller sound quality.

4 Light LED Battery Status IndicatorAn integrated LED status indicator tells you exactly how much “juice” is left and also displays how much time remains during the charging process.

Quick Speed500 milliamps fast charge technology, with an advanced battery for added safety, as well as 1900 mAh capacity.

Soft-Touch FinishSleek design includes a new, soft-touch, rubberized finish and a shock-resistant band.

Choice of ColorThe juice pack plus comes in four colors, allowing you to choose the case that matches your style, including cyan, magenta, yellow and black.

Pass-through USBIncluded USB cable enables you to simultaneously charge and sync your iPhone 4 to iTunes without having to remove it from the juice pack plus.

 

for iphone portable external battery Power bank