How long does it take to charge the battery of a gasoline car?

The battery of a gasoline car needs to be charged for about four hours.

The main function of the car battery is to provide power for the start-up and lighting of cars, motorcycles, tractors, and diesel engines. It also acts as a voltage stabilizer for the entire electrical system of the car, buffering the impact voltage and protecting the electronic devices.

The working principle is to convert chemical energy into electrical energy. The battery uses a lead plate filled with sponge lead as the negative electrode and a lead plate filled with powdered lead dioxide as the positive electrode, with a 22-28% sulfuric acid as the electrolyte. When the battery is charged, the electrical energy is converted into chemical energy, and when it is discharged, the chemical energy is converted back into electrical energy. When the battery is discharged, the metal lead is the negative electrode and is oxidized into lead sulfate, while the powdered lead dioxide is the positive electrode and is reduced into lead sulfate.