Power bank

A power bank is a portable charging device used to provide power for mobile devices. It is characterized by its portability, charging capacity, output power, and charging speed. Its compact and lightweight design allows users to carry it on the go. The charging capacity determines the usage time, while the output power affects the charging speed. Safety mechanisms prevent issues such as overcharging, over-discharging, overcurrent, and short circuits. Compatibility and additional features like wireless charging offer more options for users.