There is no need to distinguish, because there is a socket on the power bank, which means that it is dual-output, which can charge two mobile phones at the same time. Usually, you can choose a random socket for charging. Mobile phone charging treasure, also known as portable power banks, mobile power bank.

Operation steps/methods

    1 There is no need to distinguish, because there is a socket on the power bank, which means that it is dual-output, which can charge two mobile phones at the same time. Usually, you can choose a random socket for charging.

    2 Mobile power bank, also known as portable power bank, mobile power bank. A portable charger integrating power supply and charging functions, which can charge mobile phones and other digital devices anytime, anywhere or standby power. Generally, lithium batteries or dry batteries are used as power storage units.

     The battery that is different from the internal configuration of the product is also called an external battery. The charging plug of the portable power bank can directly charge the mobile device through the AC power supply and has its own battery storage device, which is equivalent to a hybrid of a charger and a spare battery. Compared with the backup power supply, the device of a charging plug can be simplified. 

    Compared with the charger, it has its own power storage device, which can provide backup power for digital products when there is no direct power supply or when going out. The definition of power bank is a portable power supply with large capacity that is convenient and easy to carry. It is a portable device integrating power storage, boosting, and charging management.