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Chargers refer to electrical devices specifically designed to replenish energy stored in other portable electronic devices such as laptops, smartphones, tablets, and audio equipment including microphones. They typically convert power from a wall outlet or other high-voltage source into a lower voltage suitable for the device being charged, ensuring safety and optimal charging efficiency. Chargers come in various forms and specifications depending on the type of device they are intended for, with features such as fast charging, multiple port compatibility, and energy-saving modes becoming increasingly common.