1) Backup Energy for iPhone4
2)Dural USB output
3)Capacity of internal battery: 5000mAh
4) For cellphone and iPhone

5000mAh Backup Power Pack  for cellphone and iPhone4 

1) Material: ABS

2) Capacity of internal rechargeable polymer Lithium ion battery and circle life: 5000mAH and 500 times;

3) Can be applicable to most of  handheld electronics devices such as mobilephone, digital camera, PSP, GPS, iPhone, iPad etc.

3) Smart protective integrated circuit to avoid overcharge,overdischarge,overcurrent and shortcuit;

4) LED light indicates the electronics quantity;

5) Input voltage and current: 5V, 500mA;

6) Output voltage and current: 5V, ,500mAh and 5V,1000mAh

7) Charging time for iPhone:60 minutes

8) Working temperature:-10C-40C

9) Storage temperature: -20C-50C

10)Individual size: 11x7x1.5cm

11) Individual Weight:156g

12) Talking time for 3G network:15 hours or above;

13) Time for surfing internet: 14 hours or above for 3G internet  work; 15 hours or above for Wi-Fi internet work

14) 3 led indicators