UrgeBasics 2600mAh Flash Tube Pro Portable Battery Charger for Smartphones - Retail Packaging - Black Rechargeable Lithium-Ion Battery 2600 mAh Battery Capacity Input: 500mAh Output: 800mAh Compatible with iPhone, iPod, iPad, Blackberry, Samsung, LG, HTC, Motorola, Droid, Kindle, Nook, most eReaders, & Tablets