ANKER: Amazon’s #1 Charging Brand• The highest average review rating of any charging brand.• One in three chargers sold on Amazon is from us.• Join the 6 million+ satisfied customers powered by Anker.2nd Generation Astro Mini External Battery A charging station in the palm of your hand. Power IQ Detects your device. Delivers the fastest charge. Exclusive to Anker, Power amp-adjustment technology intelligently identifies your device to deliver its fastest possible charge. High Capacity Add over a full charge to an iPhone, almost one full charge to your Galaxy S5 or at least one full charge to most other smartphones. Same Size, More Power The original lipstick tube design. Now upgraded with higher density cells and efficiency 10% above most other brands to give you 6% more power. Superior Quality We use only premium LG cells, together with the most advanced materials and cutting-edge technology, to ensure complete safety. World Famous Warranty At Anker, we believe in our products. That’s why we back them all with an 18-month warranty and provide friendly, easy-to-reach support. For Optimal Use:• Use the included cable, your original cable or a third-party certified one (such as MI).• Compatible with Apple and Android smartphones, tablets (including the Nexus 7) and other USB-charged devices except for the iPod nan, iPod Classic, HP Touchpad, LG G2, Asus and some GPS and Bluetooth devices.