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Cell Phone Chargers are compact devices designed to replenish the battery power of mobile phones, smartphones and similar portable electronics. They convert electrical energy from an outlet or other power source into a form suitable for recharging lithium-ion, nickel-cadmium, nickel-metal hydride or other types of rechargeable batteries commonly used in cellular devices. These chargers typically feature a compact design with a plug that connects to an electrical outlet and a cable ending in a connector compatible with the charging port of the specific mobile device. Some chargers come bundled with new phones, while others are sold separately as accessories. They may also include features such as multiple USB ports for simultaneous charging of multiple devices or fast-charging technology for quicker battery replenishment. Cell Phone Chargers fall under the broader categories of Electronics and Computer Accessories, specifically in the subcategory of Chargers and Power Supplies. They are essential tools for maintaining the functionality and usability of modern mobile phones, ensuring users can stay connected and productive while on the go.