... capacity: 1800mA/h 3.Dualpopurse: protection case&charger Portable back-up power performance:1.Features: mini design, fashionable style, quick ... : black, white, red, yellowOperation Instruction:While charging the back-up power, connect to either an external 5V-1A power adapter ... when charging and discharging; and likewise, cut off the back-up battery power while pressing the button for 3 seconds. It ...