A wall charger is a device used to supply electrical power to charge electronic gadgets like smartphones, tablets, and laptops. It typically plugs directly into a wall outlet and converts the electrical energy from the outlet into a suitable form for the device being charged. Most wall chargers come with a USB port or a specific connector for different devices. These chargers vary in power output, usually measured in watts, which determines how quickly a device can charge. Some wall chargers are designed for fast charging, allowing devices to gain battery life more quickly. They are essential accessories for modern electronics, ensuring that devices remain powered and ready for use.