Mobile phone Backup battery for iphone 4 Backup battery with 4 LED for iphone 3G&4 Mobile Power station for iPhone 3GS,iPod or Cellphone&Iphone 4 Product ... status and charge progress indicator Technique specifications: 1. Battery: Rechargeable 2200 mAh lithium battery 2. Input: DC5V,500mA 3. Output: DC5V,500mA ... 3G,iPhone 3GS,iPod or Cellphones(LG,SAMSUNG,Bitmap NOKIA,BLACKBERRY,MOTOROLA,and etc.)