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Laptop chargers refer to the devices used to supply power to laptops when they are not connected to a main electrical source. These compact and portable units consist of an adapter that converts AC power from a wall socket into DC power suitable for charging laptop batteries, as well as a cord with a connector that attaches to the laptop. They typically come with specific voltage and amperage ratings to match the requirements of different laptop models. Laptop chargers are essential computer accessories that ensure optimal performance and longevity of laptops by providing a reliable power source when users are on the go or working in areas without easy access to electrical outlets.