A mobile charger is a device used to recharge the battery of a mobile phone or other portable electronic devices. It typically connects to a power source, such as a wall outlet or a USB port, and provides the necessary electrical current to restore the battery's energy. Mobile chargers come in various forms, including wall chargers, car chargers, and portable power banks. Most mobile chargers are designed to be compatible with multiple devices, using standard connectors like USB or Lightning. They vary in charging speed and capacity, with some offering fast charging options to quickly replenish a device's battery.