No. The USB interface on the cigarette lighter is just a power supply interface or a transformer, which converts the 12V of the cigarette lighter into 5V for charging mobile phones. The cigarette lighter does not have an MP3 player chip and cannot be plugged into a USB flash drive to play music. If you want to play songs from a USB flash drive, it must be an independent car USB interface.

The maximum current that the cigarette lighter circuit can withstand is generally 10A (20A is also available). Calculated based on the 12V voltage of the cigarette lighter jack, if the total power of the vehicle electrical appliances exceeds 120W, the cigarette lighter circuit will be overloaded.

Therefore, you should avoid using electrical appliances with a power exceeding 120W in the car. It is also important to note that do not continue to draw power from the cigarette lighter socket when the vehicle is turned off, otherwise the battery will easily run out and the vehicle will be unable to be started again. If the power of the vehicle's electrical appliances is too high and the circuit is overloaded, the fate of the battery will be in doubt.

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Notes

Vehicles are equipped with a cigarette lighter for the convenience of drivers. Although we are against smoking in the car, you can This configuration will not be cancelled. Some high-end cars also have a separate cigarette lighter in the rear for the convenience of rear passengers.

With the development of automobile technology, cigarette lighters are used to obtain power from automobiles, and there are more and more additional on-board electronic devices. The most typical ones are: GPS, MP3 converter, power inverter, Shavers, car inflators, car wash pumps, etc. It brings great convenience to motorists. With the increase of these things, cigarette lighters are used more and more frequently. Therefore, the probability of problems also increases.

The power supply voltage of the cigarette lighter is 12 volts, which is consistent with the battery voltage of the vehicle. Usually the cigarette lighter has a separate power cord connected to it and is not mixed with other lines. Therefore, there is Separate insurance. The correct usage method should be to insert and pull out vertically up and down without shaking. Frequent shaking and pulling out can easily cause looseness and short circuit, burning the fuse and external equipment.

The iron part of the cigarette lighter shell is the negative pole of the power supply, and the heating wire in the middle is the positive pole of the power supply. When the cigarette lighter is inserted and pressed downward to lock, the heating element of the cigarette lighter and the ignition point The positive electrode of the cigarette socket contacts and starts to heat. When the temperature of the electric heating plate reaches the temperature, the circlip deforms and releases the cigarette lighter plug. The cigarette lighter pops out and the cigarette can be lit. After use, insert it back into the socket (not press again).

The electric heater will naturally lower the temperature. If the cigarette lighter is not plugged back into the socket after lighting a cigarette, it may cause a fire, so please be aware of this. Due to long-term use, repeated pulling out and plugging in will cause the circlip to loosen and become unable to lock after pressing the cigarette lighter, and it will no longer be able to heat the cigarette lighter electric heater. Another problem is that repeated plugging and unplugging and unreasonable use cause short circuits in the wires and burn out the fuses.

Baidu Encyclopedia-Cigarette Lighter