Mophie Powerstation 4000mAh 2.1A External Battery Charger for iPad, iPhone, iPod touch, DROID, HTC and BlackBerry - Travel Charger -Black (Certified Refurbished)
4000mAh rechargeable power capacity Special high out battery that allows for fast charging Capable of switching between 500mAh, 1A, and 2.1A charge Ability to charge virtually any USB device in the world.