Urge Basics Power Bank Portable Battery Charger 4000mAh - Retail Packaging - Silver Rechargeable Lithium-Ion Battery 4000 mAh Battery Capacity Output: 5V DC 1A Using included USB cable plug into either a computer USB port, AC adapter with USB port, or car adapter with USB port, and into the Power Bank. LED will light up when Power Bank is fully charged. Compatible with iPhone, iPod, iPad, Blackberry, Samsung, LG, HTC, Motorola, Droid, Kindle, Nook, most eReaders, & Tablets