Can a car battery still be used after four years?
2 Answers
If the test results are normal, it can continue to be used. The normal lifespan of a car battery ranges from 1 to 8 years, which largely depends on the condition of the vehicle. With a properly functioning vehicle alternator and no electrical leakage, the battery can generally last for more than 3 years. If you notice that the battery is not holding a charge or the starter is weak, and the headlights are significantly dimmer, you should remove the battery and charge it for 12-24 hours using a charger. If it still doesn’t work, and the vehicle’s mileage has exceeded 50,000 km with no alternator issues, then it’s time to consider replacing the battery. A car battery, also known as a storage battery, is a type of battery that converts chemical energy into electrical energy. The term "battery" commonly refers to a lead-acid battery, which is primarily made of lead and its oxides, with sulfuric acid solution as the electrolyte.
After four years of use, the battery may still last for a while, but you really need to be careful. I've personally experienced this situation—just after four years, starting the car became more difficult, especially on cold winter mornings when the car wouldn't start, which was quite frustrating. The average lifespan of a battery is three to five years. As it ages, its ability to hold charge declines, leading to insufficient power during startup, causing hesitation or dim lights. I recommend paying attention to whether there's any delay when starting the car, or visiting a professional repair shop to test it with a voltmeter. A normal reading is around 12.6 volts; if it's below 12.2 volts, it’s time to replace it. Don’t skimp on this small expense—getting stranded on the highway can be dangerous. Regularly cleaning the battery terminals to prevent corrosion can also extend its life a bit. In short, check it often and prioritize safety.
