A wall charger is a device that plugs directly into a wall outlet to provide power to electronic gadgets like smartphones, tablets, and laptops. It converts electrical energy from the outlet into a form that your device can use to charge its battery. Most wall chargers come with a USB port, allowing you to connect your device using a USB cable. These chargers are essential for keeping your devices powered up and ready to use. They are often compact and portable, making them easy to carry while traveling. Some wall chargers even have multiple ports, so you can charge several devices at once, like your smartphone and tablet.