What is the current of the 12V power supply in the car cigarette lighter?
2 Answers
The car cigarette lighter is 12V 10A. There are two current values for the car cigarette lighter socket, 10A and 20A. The battery's rated voltage is 12V, with corresponding rated power outputs of 120W and 240W, and the motor's usage power matches these values. More information about the cigarette lighter is as follows: Methods to measure the voltage of the cigarette lighter: 1. Multimeter: First, prepare a multimeter and set the range to 50V. Be sure to set the multimeter to the DC range, otherwise, it may be damaged. 2. Testing: Use the black probe of the multimeter to test the outer wall of the cigarette lighter socket, and the red probe to test the center of the socket's base. When using the red probe, avoid touching the outer wall to prevent a short circuit, which could burn out the multimeter.
I usually like to tinker with electronic devices while driving. The 12V power outlet (cigarette lighter) typically provides a current of around 10A to 15A, depending on your car model and year. Older cars mostly have 10A, while newer ones may have 15A. I've tried using phone chargers, small vacuum cleaners, and even air pumps in my car. If the device's labeled power requirement exceeds the car's supply—for example, using a 15A air pump on a 10A outlet—the fuse can easily blow. Once, I almost got stranded on the road because of this. So, the safest approach is to check your vehicle's manual or the fuse box label, which states the rated current. Also, when buying devices, opt for car-specific ones labeled with compatible current ratings—they're safer and more convenient. In daily use, avoid plugging in multiple high-power devices simultaneously and keep the charging circuit unobstructed.
