A car lighter socket is officially called a 12v auxiliary power outlert but is commonly known as a lighter socket, 12V socketaccessory socket, or power point, serving as a versatile DC power source for devices like phone chargers and dash cams via adapters, even though it's rarely used for lighting cigarettes anymore. 
Common Names:
  • 12V Auxiliary Power Outlet: The technically correct term, highlighting its function as a power source.
    Accessory Socket / Power Point: Emphasizes its use for accessories.
  • Cigarette Lighter Socket / Cigarette Lighter Port: The traditional name, still widely used.
  • 12V Socket / 12V Outlet: A simple description of its electrical output.

Key Functions:

  • Provides 12-volt DC power for various gadgets.
    Powers USB adapters, GPS, air compressors, and more.
    Connects to the car's electrical system, similar to a battery

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