A power bank is a wireless battery that can receive and produce charge. For a power bank to work, it must be charged to store energy. An adapter cable provided with the power bank is used to charge it...

A power bank is a wireless battery that can receive and produce charge. For a power bank to work, it must be charged to store energy. An adapter cable provided with the power bank is used to charge it with a wall outlet. Once the indicator light on the power bank shows the accessory is charged, it can be used to charge electronic devices..