Powerbank
A power bank is a portable device that stores electrical energy in rechargeable batteries, allowing users to charge electronic devices such as smartphones, tablets, and other USB-powered gadgets on the go. Power banks come in various sizes, capacities, and designs, typically featuring multiple output ports to charge multiple devices simultaneously. They are equipped with a charging port for recharging the bank itself, often using USB or proprietary connectors. The stored energy is released through USB ports, making them convenient for use in situations where access to a wall outlet is unavailable. Power banks are widely used for travel, outdoor activities, and daily commuting, providing an essential solution for powering devices when needed.