Chargers are devices used to replenish the energy of batteries in various electronic devices. They convert electrical energy from a power source, such as a wall outlet or a USB port, into a form that can be stored in batteries. Commonly used for smartphones, laptops, and electric vehicles, chargers come in different types and specifications to match the requirements of the devices they power. There are several types of chargers, including wall chargers, car chargers, and wireless chargers. Each type serves a specific purpose and is designed for particular devices. For example, wireless chargers use electromagnetic fields to transfer energy without the need for physical connections, making them convenient for everyday use.