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12-volt cigarette lighters work by converting electrical energy from a vehicle's battery into heat. When the lighter is pushed in, it completes a circuit that sends current through a heating element, causing it to heat up. Once the element reaches a certain temperature, it glows red and ignites the materials inside, allowing it to be used for lighting cigarettes or other purposes. After a few seconds, the lighter automatically pops out, and the heating element cools down when not in use.

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1w ago

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