A USB charger is a device used to supply electrical power to various electronic gadgets, such as smartphones, tablets, and portable gaming consoles. It typically features a USB (Universal Serial Bus) port, which allows users to connect a charging cable to their device. USB chargers come in various forms, including wall adapters, car chargers, and power banks, making them versatile for different charging needs. These chargers can deliver different power outputs, measured in watts, depending on the device's requirements. Many modern USB chargers support fast charging technologies, enabling quicker power replenishment for compatible devices. They are widely used due to their convenience and compatibility with a range of electronics.