How long is the life of a car battery? When do I need to replace the battery?

I don't know if you have found the problem. The original battery is very durable, and its service life is more than 5 years under normal use. No matter which brand, the service life of the replaced battery is about 2-3 years, and it is the same model and size. Why are original batteries more durable? Is the service life of the replaced battery shorter? Original batteries are more durable than brand batteries. 1. The original battery is more expensive than the brand battery, with better quality and workmanship. Many people who do battery business here will come to collect batteries. I made an indirect inquiry. Some of them said that the aluminum in the battery was removed and sold, while others vaguely said that it was refurbished and then sold. So in this case, you need to go to some guaranteed businesses to avoid buying refurbished and durable batteries.

2. Use the original battery under better environment and working conditions. After buying a new car, all aspects of the vehicle are in the best working condition, and the loss of battery power is also the lowest. With the use of vehicles and the increase of vehicle age, some circuits are aging and the resistance is increasing. There is also the situation that the battery is frequently charged and discharged and the original battery is slowly damaged. Then the replacement battery is after the vehicle has been used for four or five years. At this time, the battery is responsible for the loss caused by the aging of the vehicle, so in comparison, the battery replaced later is not so durable.

How to prolong the service life of battery? Just don't overdischarge the battery, just like the battery of a mobile phone. You will find that the health of the battery will get lower and lower after each charge. The correct way is to use electrical appliances at will when the vehicle starts. Once the engine is turned off, all appliances must be turned off to protect the battery. The battery must be replaced. In the process of using the vehicle at ordinary times, it is inevitable that the battery will feed and the vehicle will not collide. At this time, it does not mean that the new battery must be replaced directly. We can find a ground wire and connect the positive electrode to the positive electrode and the negative electrode to the negative electrode. After driving for more than half an hour, turn off the engine and try again. If the vehicle can run normally, it proves that the battery is completely fine and can continue to be used. If there is no response at all, it is recommended.

Precautions for battery disassembly: When disassembling the battery, the anode must be disassembled first, and then the cathode must be disassembled; When installing the battery, the negative electrode must be installed first, and then the positive electrode must be installed, so as to avoid grounding during operation and damage to electrical appliances or fuses.

To sum up, if you want to extend the service life of the original battery or replace the battery, you must remember one thing: don't overdischarge the vehicle battery. Once the engine is turned off, it is best to turn off all electrical appliances in time. For batteries that can't run, you can choose to charge and save them. If there is none, it proves that the battery life is completely gone.