Posted on 8/4/2021
Changing a dead car battery used to be simple. As a matter of fact, if you could lift it, you could change it. Not so anymore. As the vehicles get more and more computers, internal networks, and sophisticated energy management systems, changing a battery has become more and more complicated. For example, many cars, including BMW and Audi vehicles, not only require a new battery, but also a professional digital tool to program / register the battery. This tool is required to alert the car that a new battery is in (and to provide the Battery Control Module (BCM) with the correct parameters for correctly charging the new battery). As cars get smarter, more and more functions get computerized. So as the battery ages, the alternator (which recharges car battery), is adapting the charge it delivers to the fading capabilities of the battery. When you put a new battery in, without alerting the alternator to the change, you could end up killing the new battery by overchargi ... read more