The average lifespan of a car battery typically ranges from 2 to 5 years, depending on the battery type, usage environment, and driving habits. In hot climates, the lifespan of ordinary lead-acid batteries is about 2 to 3 years, while maintenance-free batteries or high-quality original equipment manufacturer (OEM) batteries have a design lifespan of 3 to 5 years, which can even be extended to 8 years with proper maintenance. Key factors affecting battery lifespan include high temperatures accelerating electrolyte evaporation, frequent short-distance driving leading to insufficient charging, and excessive use of on-board electrical appliances after the engine is turned off. To extend battery lifespan, it is recommended to regularly check the cold-vehicle voltage (above 12.3V is normal), avoid draining the battery when parked for long periods, and ensure the charging system is working properly. For vehicles equipped with automatic start-stop functionality, AGM or EFB batteries usually have a lifespan of 3 to 5 years, but frequent start-stop cycles will shorten their service life. The cost of replacing a battery generally ranges from RM200 to RM500, and it is recommended to test the cold cranking amps (CCA) with professional equipment every 2 years; when the value drops below 50% of the nominal value, the battery should be replaced promptly.
