Bangkok: In the modern era, automotive technology has advanced by leaps and bounds. One function we often see in newer car models is the Auto Start-Stop (or Idling Stop) system, which automatically shuts off the engine when the car is stationary and restarts it when the driver releases the brake or presses the accelerator. This system is designed to help save fuel and reduce emissions.
According to Thai News Agency, this article will provide you with the correct answers from the "Sure Before Sharing Motor Check" program, verified by Mr. Suramis Charoenngam, a vehicle tester and automotive technology expert, so that all car owners can understand and properly maintain their vehicles.
The truth is, this type of vehicle requires a specific battery. Automotive technology experts have confirmed that the widely shared information that vehicles with Auto Start-Stop systems require a specially designed battery is "true." This is related directly to the system's operating principles and the load the battery bears.
Imagine driving in stop-and-go city traffic. The Auto Start-Stop system shuts off the engine when the car is completely stopped (but the car's electrical systems, such as the air conditioning and radio, continue to operate, drawing power from the battery). When you release the brake, the engine restarts. This constant "on-off" operation puts significantly more stress on the battery than in a regular car. Furthermore, the alternator in these types of vehicles delivers a more intense and different power delivery than in normal cars.
Batteries designed to support Auto Start-Stop systems differ from standard batteries in their internal structure, including plate thickness and the use of special materials as a barrier between the electrodes. For example, AGM (Absorbent Glass Mat) batteries use a glass fiber mesh to absorb the acid and infuse it between the battery plates. This technology reduces the chance of battery swelling or short circuits in the plates during intense charging, making them highly resistant to charging and discharging.
If we install a standard battery in a car with an Auto Start-Stop system, that battery will have to work constantly beyond its designed specifications. The most obvious consequence is a drastically shortened lifespan. Typically, a standard battery might last around 1.5 to 2 years, but in this type of vehicle, its lifespan could be reduced to as little as 6 to 8 months.
Many people might think, "Why not just permanently disable the Auto Start-Stop system and switch to a regular battery that's two to three times cheaper?" The expert answer is that even if you disable the Auto Start-Stop system, the car's charging system still operates as before, meaning it continues to surge charge, causing a regular battery to degrade faster. While some might think replacing three inexpensive batteries is more cost-effective than buying one more expensive, specialized battery, the long-term average cost is almost the same, plus you'll end up needing more frequent replacements.
To ensure your vehicle operates at its best and is safe, experts recommend the following: Always refer to the manufacturer's manual. The original battery that came with the vehicle is the best standard. Sometimes it may look like a small battery, but it's actually a high-spec battery that delivers excellent power. Specifications must match. When replacing the battery, it doesn't necessarily have to be the exact same brand or model, but "the specifications (such as capacity or battery type) must match what is stated in the manual."
In summary, if your car has an Auto Start-Stop system, investing in a specifically designed and compatible battery is the most worthwhile and correct option. Not only will it ensure your car's systems function optimally, but it's also safer and offers a longer, more reasonable lifespan.