Astro E7 Portable Charger External Battery Power Bank Portable power pushed to the limits. PowerIQ Detects your device. Delivers the fastest charge. Exclusive to Anker, PowerIQ amp-adjustment technology intelligently identifies your device to deliver its fastest possible charge. Giant Capacity Power to keep you going, and going...and going. Add up to ten charges to a smartphone, two charges to a tablet or multiple charges to pretty much anything else. charges the iPhone 6 ten times, the iPhone 6 Plus or Galaxy S6 over six times or the iPad Air twice. Safely recharges with a 2 amp or higher output charger (please note most phone chargers only have 1 amp).Most Compact About the length of a Galaxy Note 4, it's the most compact charger of this capacity on the market and has a built-in flashlight to boot. Superior Quality We use only premium LG battery cells, together with the most advanced materials and cutting-edge technology, to ensure complete safety.