What is the main function of automobile battery?

The functions of automobile batteries are as follows:

1. Power supply for automobile starter and ignition system.

2. Provide stable DC power supply for automobile electrical appliances, and ensure that the electronic circuit and DC lighting system of the automobile can also supply power normally when parking.

3. The car battery is also a huge "capacitor", which can stabilize the AC surge voltage generated by the generator, thus stabilizing the voltage when the car is driving at high speed. Better protect the electrical appliances of the car.