The battery of the car is an important component of the car, if there is no battery, the vehicle is even normal starting are very difficult below I take you to understand the role of the car battery.

First: the battery can provide electrical energy for the vehicle, can store electrical energy. Its main role includes: in the engine start or low-speed operation, because the car generator does not generate electricity or very low voltage, the car electronic system all provided by the battery. When the engine is running normally, the generator supplies power to the electric equipment and charges the battery at the same time. At the same time, the battery is also a large-capacity capacitor, which can absorb the instantaneous high voltage generated in the car's circuit, thus protecting the car's electrical equipment.

Second: the use of misconceptions

After turning off the engine, try to avoid using electrical equipment for a long time, such as audio, DVD, radio, lights, air conditioning, etc., for no more than 30 minutes, if you must use electrical equipment, it is best to start the engine by the generator to provide electricity.

When the engine starts, the battery will be discharged with high current, but a long time high current discharge, will greatly harm the battery. Each start time should not exceed 5 s, if two consecutive starts, the interval should be 10 ~ 15 S.

    Where the engine is turned off and still use the car for a long time after the operation of electrical equipment, will lead to excessive discharge of the battery, such as parking at night after forgetting to close the lights, the engine can not start the next day, a large part of the reason is due to the failure to close the lights in time to cause the battery power consumption, at this time the battery performance may have been greatly reduced.