Will Replacing a Start-Stop Battery with a Regular One Damage the Car's Computer?
2 Answers
Replacing a start-stop battery with a regular one can damage the car's computer, for the following reasons: Insufficient current for the starter motor: When a vehicle is equipped with an automatic start-stop function, the starter motor requires a significantly higher operating current, which a regular battery cannot support. Impact on power management: If a regular battery is installed in a vehicle with an automatic start-stop function, it may lead to abnormal power management. Some owners who have replaced their batteries with regular ones have reported issues such as the battery not charging fully, the power management system failing to match the battery properly, and the car failing to start, even after disabling the start-stop function.
The frequent engine starts by the start-stop system place high demands on the battery. Ordinary batteries tend to age quickly and have a shortened lifespan under such high-intensity cycling. When voltage fluctuations are significant, the computer modules can become unstable, affecting engine control and monitoring functions. I've seen similar cases where the start-stop function failed after the owner used a regular battery, with the computer reporting error codes, and in severe cases, hardware damage occurred. It is recommended to use AGM or EFB specialized batteries that match the high demands of the start-stop system. Regular maintenance and checking of battery health can prevent minor issues from becoming major problems, as computer repairs can be costly.
