The myCharge Amp 3000XT Power Bank has a rechargeable 3000 mAh battery that gives your Smartphone an extra 13 hours of talk time. Two built-in USB ports feature 2.1A output to charge tablets and higher-powered devices. Built-in wall plug allows for ultra-fast recharging, and a durable rubberized finish makes sure that your power isn"t only portable, but safe.