Porsche 911 battery not charging and car stopped on highway, alternator and battery replacement needed on Porsche 911

Some Porsche 911 owners report experiencing issues with battery charging, which can lead to the car stopping unexpectedly on the highway. These problems may stem from dead batteries that persist even after passing tests at auto shops, indicating a potential need for replacement or maintenance. Symptoms such as fluid leaks or corrosion around the battery can signal the necessity for professional attention. Owners also note that if the battery loses its charge quickly after recharging, it may indicate a faulty alternator that should be addressed before investing in a new battery. Warning lights on the instrument panel may further suggest charging system troubles, and older models have reported similar alternator issues. Proper maintenance and charging methods are crucial, with recommendations for charging through the cigarette lighter or a socket. Additionally, if the battery fails to hold a charge or shows significant voltage drops, problems with the alternator or battery cables may be involved. Replacing the battery and reprogramming the vehicle's system can help stabilize voltage output and ensure effective charging.