EFB Battery Guide: Everything You Need to Know About EFB Technology
In today's world, many vehicles come equipped with start-stop systems designed to enhance fuel efficiency by reducing engine idle time. This system works by shutting down and restarting the engine's internal processes, necessitating a car battery with improved deep cycle durability for a reduced charge state.
While you might think a typical flooded battery would suffice, an Enhanced Flooded Battery (EFB) is actually required. If you're unfamiliar with this technology, keep reading to discover what makes EFB batteries special and how they compare to other battery types.
What Is an EFB Battery?
EFB stands for Enhanced Flooded Battery, an improved version of a wet battery. A wet battery is a rechargeable battery containing a liquid electrolyte, typically sulfuric acid for vehicle batteries. Depending on your location, this type of battery may also be known as an Improved Wet-Flooded Battery (IFB) or Advanced Flooded Battery.
EFB batteries are designed as a more durable and higher-performing alternative to standard wet-flooded batteries, often mistaken for Absorbed Glass Mat (AGM) batteries due to their enhanced features.
EFB vs. Standard Flooded Battery
EFB technology outperforms standard wet-flooded batteries in both performance and durability. On average, EFB batteries provide up to 85,000 engine starts, compared to just 30,000 for standard wet-flooded batteries. This makes EFB batteries a far better choice for vehicles with start-stop systems.
EFB vs. AGM Batteries
EFB batteries are a mid-tier option between standard wet-flooded batteries and high-tier AGM batteries. EFBs improve upon flooded battery technology with additional carbon additives in the battery plate, while AGM batteries feature recombinant lid technology, glass mat separators, and higher pressure packs for a superior cyclic lifespan. AGM batteries are better suited for high-specification vehicles with multiple technologies like passive boosting, regenerative braking, and start-stop systems.
Key Features of EFB Technology
EFB batteries have two main characteristics: scrim and acid circulator. The scrim, a polyester element, prevents mass erosion by holding the reactive material in place, enhancing deep cyclic resistance and charge acceptance. The acid circulator prevents acid stratification by maintaining constant circulation, improving charge acceptance and overall battery life.
Does the Technology Live Up to Its Reputation?
Absolutely. Enhanced Flooded Technology is a cost-effective mid-tier option for vehicles with entry-level start-stop systems, meeting OEM standards and factory-fitted in many such vehicles, making them ideal for vehicles with start-stop technology.
Advantages of EFB Technology
For Small Vehicles:
Twice the deep-cycling performance and partial state of charge compared to conventional batteries.
Higher number of engine starts and extended engine-off periods.
Better charge acceptance and thermal stability, perfect for hot climates like Africa and the Middle East.
Ideal for vehicles with start-stop technology without regenerative braking systems and those with higher energy demands.
For Commercial Vehicles:
High cyclic ability due to improved grip-to-mass adhesion and positive paste.
Low water consumption thanks to a unique lid design.
Optimum performance with high vibration resistance and best-in-class hot melt.
Reduced acid stratification due to extra carbon in the plate, providing an optimal solution for deep discharge.
FAQs About EFB
Can an EFB Be Tested with a Regular Flooded Battery Tester? Some EFB batteries can be tested with standard flooded battery testers, but most will test inaccurately, leading to misdiagnosis due to over-reading the CCA value.
Will the EFB Battery Freeze If Stored in the Garage During Winter? As long as the battery is kept in a charged state, it should not freeze.
Final Verdict on EFB Technology
EFB technology bridges the gap between standard flooded batteries and AGM batteries, making it suitable for vehicles with start-stop systems that require cyclic durability. Its thermal stability makes it ideal for hot regions like Africa, the Middle East, and Asia. Before replacing your vehicle's battery, confirm if it uses an EFB, especially if it has a start-stop system.
Thank you for reading about EFB battery technology. We hope you found this guide insightful. For more information on battery products and maintenance tips, please contact us to let us cater to all your battery needs.