Anker® Astro2 8400mAh Dual USB Output External Battery Pack Charger with Flashlight for Android Phone Smart mobile phone, Apple iPhone 5/4 / 4S / 3GS, iPod, iPad, iPad 2, The New iPad (iPad 3), iPad mini; Samsung Galaxy S, S2, S3, S3 Mini, grade 2, grade; HTC One X, Sensation, XE XL, Amaze 4G, EVO 3D; Motorola Atrix 2, Droid X2 / Razr / Bionic; BlackBerry Bold 9900, Sony Ericsson Xperia Arc S, Nokia N9 Lumia 800 820 900; GoPro; GPS; PSVita [2 USB Output 5V 1A / 2A, Same OEM, low price]
I bought the part as a "reserve tank" for my phone (I consider myself already as a "power user"), because it was particularly annoying when my little helpers on the way (when you need it most, Navi, etc.) no longer active could be. If