How Many Years Does a Car Battery Generally Last?
1 Answers
The normal service life of a car battery ranges from 1 to 8 years, which largely depends on the vehicle's condition. Under normal circumstances where the vehicle's alternator charges properly and there are no electrical leaks or grounding issues, the battery can typically last more than 3 years. If you notice that the battery isn't holding a charge, the starter is weak, or the headlights are significantly dimmer, you should remove the battery and charge it for 12-24 hours using a battery charger. If the problem persists and the vehicle's mileage exceeds 50,000 km with no alternator issues, it may be time to replace the battery. Below is some relevant information about car batteries: 1. Some older batteries develop high internal resistance, appearing fully charged quickly but draining rapidly. Even if the no-load voltage measured with a multimeter seems normal, it's essential to also check the discharge current using a discharge tester. 2. During discharge, a voltage not dropping below 10V is normal. If it falls below 10V, the battery might have broken cells and should be replaced. The more the voltage drops under load, the higher the internal resistance and the worse the discharge performance. 3. To maximize the battery's lifespan, besides using a battery life extender in parallel to prevent and remove sulfation, avoid deep discharge and maintain proper charge. For those who frequently park and listen to music or often drive short distances at low speeds, charging the battery every two weeks or so will help extend its life and keep this crucial component in optimal working condition.
