PowerCore II 20000 The Ultra-High Capacity Portable Charger with Upgraded Compatibility From ANKER, America's Leading USB Charging Brand - Faster and safer charging with our advanced technology - 20 million+ happy users and counting - Worry-free 18-month warranty Lightspeed Charging Access unrivaled charging speeds—for Apple, Quick Charge, and more—with PowerIQ 2.0, the newest generation of Anker's advanced smart-charging technology. PowerIQ 2.0 adapts to your device's unique charging protocol to deliver a tailored, blazing-fast charge. Fully Loaded Brimming with 20000mAh of pure power—enough to keep an iPhone 7 running for a week. You'll wonder how you ever spent so much time plugged into the wall. Ready for Action PowerIQ 2.0 is now multidirectional, allowing PowerCore to take advantage of rapid input charging. Get fully juiced up in as little as 5 hours, and spend more time away from the outlet. Upgraded LED Indicator Find out how much power you have remaining by pressing the slick 8-light LED wheel, or by plugging a device into an output port.