Types of Start-Stop Car Batteries: EFB and AGM
EFB Battery
The EFB (Enhanced Flooded Battery) battery is designed for vehicles with normal start and stop systems. It offers better performance and longer life, meeting high cycle requirements. EFB batteries can reduce CO 2 emissions by 6% and improve fuel consumption efficiency by 6%, compared to conventional batteries. They also support a higher power load from the auxiliary system, even if the car is idle.
It is essential to replace an EFB battery only with another EFB battery or with batteries specifically designed for start-stop systems as well as AGM.
AGM battery
AGM battery (Absorbent Glass Mat) is designed for larger and more demanding start-stop vehicles, with more advanced technology than standard vehicles. Increases fuel efficiency by 8% and reduces CO 2 emissions by 8%.
Like EFB batteries, AGM batteries should only be replaced with similar batteries.
Key Differences between Start-Stop Batteries and Conventional Batteries
- Construction: Start-stop batteries use AGM technology, where the electrolyte is absorbed into fiberglass mats, providing better cycling capabilities and vibration resistance compared to conventional liquid batteries.
- Cycle Life: Designed to withstand frequent engine starts and stops, start-stop batteries have a longer cycle life, supporting multiple recharge and deep discharge cycles without significant degradation.
- Power Output: These batteries offer high power output, necessary for frequent engine restarts, and typically have higher cold cranking amp (CCA) ratings.
- Improved Durability: They are designed to withstand the demands of the start-stop system, including high electrical loads, vibrations and temperature variations.
- Advanced Battery Management: Vehicles with start-stop technology usually have advanced battery management systems that optimize charging and discharging processes.
- Cost: They are generally more expensive due to their advanced construction and technology, but their longer lifespan and durability offset the higher price.
Advantages of AGM Batteries
- Excellent Cold Starting Characteristics: They have a large cold starting current, allowing powerful and fast starts of the starter motor.
- Balanced State of Charge: AGM batteries are charged by a generator and a braking energy recovery system, allowing them to operate in a partial load range and store energy during braking.
- High Reserve Capacity: They guarantee the power supply for various electrical components, maintaining high starting power and cycle stability, even if the battery is not fully charged.
For more information about AGM or EFB battery , please contact us and we will provide you with professional answers.
