emergency charger for Iphone4g/3g/3gs

our charger is portable storage mobile charger/external charger/travel charger /backup battery /portable charger

our charger also can charger ipod/nano series
specification:
• Baterry type:Polymer battery 
• Size:67x62x15(mm)
• Weight:58g
• Capacity:1900mAh
• Input:: 500mA MAX
• Output: 800mA MAX
•Guarantee:>500 times
•Charge time: Around 2 hours.

All in CE FCC ROHS certifications
we have this charger with 2800mah/1900mah/1000mah
OEM/ODM are welcomed. 

1. In according to charging circuit design international safety standards by a dozen of senior engineers, all production by automated and non-dusted production line in clean 2000㎡ workshop.
2. Adopting branded high quality Lithium Polymer batteries, embedded multi-layer protected devices to improve high secured performance.
3. Taking the fire-proof rigid plastic shell
4. Easy to charge and discharge without batteries' memory function 
5. Adjust the voltage and Ampere automatically when charging, Iphone & Ipod series devices and batteries throughly
6. When the voltage of charger is lower than 2.8V, it can cut down power automatically to protect inside structure of batteries on 3V always, improving secured performance.
7.Patents pending on out let design and circuit design.
 Usage:
1. Easy to Use: With light weight and pretty outlooks,it can be carried easily and charge conveniently by put into the original power socket of Iphone & Ipod series devices directly
2. Long-wearing:If the battery is full-charged, it can provide the Iphone & Ipod series devices at least one cycle power.
3. Charging Method: This Portable Mobile Charger can be charged via USB port of working PC and laptop or via AC adacpter. 
4. Charging Display:4 LED lights on left upside flash when charging the  Iphone & Ipod series devices, no flash when the power is lower than 2.8V, showing the capacity of the battery when pressing the button on right upside
REMARKS: This Portable Mobile Charger cannot be charged when it's connecting the Iphone & Ipod series devices at the same time