Modern vehicles are equipped with increasingly sophisticated technology to enhance comfort and reduce fuel consumption. One such innovation is the start-stop system, which automatically turns off the engine when the vehicle is stationary, for example at a red light, and restarts it when the clutch or accelerator pedal is engaged. However, this convenient feature also places higher demands on the car battery, which is reflected in the start-stop car battery costs.
Why are start-stop car batteries more expensive?
Conventional car batteries are designed for a limited number of starts. Start-stop systems, on the other hand, place significantly more strain on the battery because the engine is switched off and on much more frequently. Therefore, vehicles with this technology use special batteries that are designed to meet these demands.
“The frequent charging cycles require a more robust design and special materials,” explains Dr. Ing. Markus Schmidt, a battery expert at the Institute for Automotive Engineering. “AGM and EFB batteries are therefore the first choice for start-stop systems.”
AGM and EFB Batteries: Differences and Costs
AGM batteries (Absorbent Glass Mat) are characterized by their high cycle life and performance. They are capable of quickly providing large amounts of energy and are therefore ideal for vehicles with start-stop systems and many electrical consumers.
EFB batteries (Enhanced Flooded Battery) represent a more cost-effective alternative. While they are not as powerful as AGM batteries, they still offer higher cycle life and charge capacity than conventional batteries.
The start-stop car battery costs vary depending on the vehicle model and battery type. While EFB batteries are available from around 100 euros, you should expect to pay from 150 euros upwards for a high-quality AGM battery.
What to consider when buying a battery?
- Vehicle manufacturer specifications: You can find information on the required battery type and capacity in your vehicle’s manual.
- Quality: Choose batteries from reputable manufacturers to ensure a long service life and reliability.
- Warranty: Reputable manufacturers offer a warranty on their batteries.
When should the car battery be replaced?
The lifespan of a car battery is on average 4-6 years. Signs of a weakening battery may include:
- Difficulty starting the engine
- Flickering headlights
- Error messages in the on-board computer
