• 10000mAh of capacity. Charges all iPhone four to five times, a Galaxy S3 thrice, or an iPad / iPad 2 once.
  • Charges one device at maximum speed or two at 3A total. Android 5V / 3A (max) port charges Android devices and iPhone with iOS 5 or higher at full speed or iPad at 1.5A; Apple 5V / 3A (max) port charges iPhone at full speed or iPad at 1A (Android devices at 0.5A). Note: this product CANNOT charge Samsung or Asus tablets.
  • A lightweight, unassuming solution to life’s daily power needs (0.59in thick). LEDs display just how much juice you’ve got left. Reliable lithium polymer core ensures quality, supplying you with more than 500 charge cycles during the course of its life.
  • Input: 5V / 1.5A; Use a 1.5A adapter (not included) for fastest charge times (8 hours).
  • Package contents: Anker® Astro 3E External Battery, 4 adapters compatible with most phones, coiled USB wire, user manual, and travel pouch.

Product Description
Capacity, charge speed, or portability? With the Anker® Astro 3E, you get all three. Who would’ve thought that 10000mAh could be so compatible, light, and sleek?

Four times the juice.

With 10000mAh of capacity, charge your iPhone 5 / 4 / 3GS / 3 four to five times (40 hours of talk time), your Galaxy S3 three times, or your iPad / iPad 2 once. That’s more than 400% the capacity of most smart phones.

Get powered up…fast.
Plug in one device for 3A of output or two for 3A total. Special circuits built for Apple and Android let you charge your phones simultaneously at full speed. What’s more, four handy adapters allow you to mix and … More >>

Price: $39.99

More info click link : Anker® Astro 3E 10000mAh Portable High Capacity Dual-Port External Battery Power Bank Backup Charger for iPhone 5, 4S, 4, iPad 4, 3, 2, Mini, iPods , GoPro and More