Plugable 6,000mAh High Capacity Portable USB Power Battery Bank for Android, Apple iOS, and Windows Mobile Devices The Plugable PB-6K2 portable USB power bank offers a compact and lightweight design, environmentally friendly construction, and high-capacity Lithium Ion battery. Whether on the go or at home, you can use this portable battery to provide the extra power to keep your devices running all day long. This portable battery is the perfect partner for any adventure. It easily fits into your pocket and the attractive green color easily stands out in a crowded bag or backpack. Single USB charging port (1A universal signal). Perfect for recharging all of your mobile devices on the go away from AC power. Charges almost all Apple iOS, Google Android, and Microsoft Windows Mobile devices. Small Windows tablets like the Dell Venue 8 Pro are also supported. The Plugable PB-6K2 with it's 6,000mAh high capacity Lithium Ion battery completely recharges an iPad Mini (Apple iPad Mini has an 4,440mAh battery), or recharges an iPhone multiple times (Apple iPhone 5s has an 1560mAh battery). Charge indicator LEDs show 100%, 75%, 50%, and 25% remaining battery levels. Battery charges from a standard Micro USB cable from any USB port.