The normal service life of car batteries ranges from 1 to 8 years. There is no specific number of years for this. This has a lot to do with the situation of the vehicle. It can basically be used for more than 3 years in the case that the vehicle generator has a normal back-charge and there is no leakage of the electrical equipment.

       It can basically be used for more than 3 years in the case that the vehicle generator has a normal back-charge and there is no leakage of the electrical equipment. If you feel that the battery cannot be charged or the starter is weak, and the headlights are obviously dimmed, you need to remove the battery and charge it with the charger for 12-24 hours. If it still doesn't work and the mileage has reached more than 50,000 km, and the generator is not faulty , you need to consider replacing the battery.

       After some batteries are worn out, the internal resistance becomes very large, and they are full once charged and finished once they are discharged. It is also normal for such batteries to use a three-meter to measure their no-load voltage. Therefore, it is not possible to measure the no-load voltage only, but also to measure its discharge current. It is normal for the voltage not to be lower than 10V during discharge, but if it is lower than 10V, it means that the battery may be broken and must be replaced.

Car maintenance:

1. The car battery should be charged frequently. If the battery is not used for a long time, it will slowly discharge itself until it is scrapped. Therefore, the car should be started every once in a while to charge the battery.

2. It is forbidden to use car electrical appliances after the car is turned off. Using the battery alone when the engine does not generate electricity will cause damage to it.

3. Do maintenance every 15,000km or 12 months, which includes changing the oil and oil grid.

4. It is recommended to change the oil and oil grid for the first 3000 kilometers.

5. The air filter element and spark plug must be replaced during regular maintenance every 30,000 kilometers.

       After the battery used for automobiles is used for more than 2 years, the capacity and discharge capacity will decrease. General car battery life will not exceed 4 years. Of course, a well-maintained battery will last longer.