EFB vs AGM Batteries: What You Need to Know

With the evolution of Start-Stop Engines, almost all vehicles leaving the assembly line will either require an EFB or the higher performance; AGM battery.
Many people enquire as to whether they can exchange these batteries for more affordable EFB batteries. Comprehending the difference between these two types of batteries will help you choose the best battery for your car. Keep reading so that you can choose the ideal option for powering your car.

 

EFB Battery 101

Enhanced Flooded Batteries (EFB) are a revolutionary version of standard wet-flooded technology. They’re entry-level batteries that use the same chemistry as gel batteries, but in a unique way that allows them to be used in stop-start vehicles.

Pros of EFB Battery

EFB batteries can cope with the frequent engine starts and stops without causing performance issues, ensuring reliable operation of the start-stop system.
They can withstand a higher number of charge and discharge cycles, making them more durable in applications that involve frequent deep cycling, such as start-stop systems. This extended cycling life ensures a longer lifespan for the battery.

When compared to Absorbent Glass Mat (AGM) batteries, EFB batteries are generally more affordable. They provide a cost-effective solution for vehicles that require start-stop compatibility without the need for the advanced features of AGM batteries.

EFBs offer a substantially faster recharge time than AGMs, even in low-voltage conditions. Recharging an EFB takes less time than recharging an AGM battery because EFBs can sustain huge amounts of energy at once without suffering damage.

EFB batteries namely Varta EFB 335 Car Battery - 3 Year Guarantee N85 or Exide EL604 005L EFB Stop / Start Car Battery 12V 60AH 520CCA are becoming increasingly popular and are widely available in the market. Many popular battery manufacturers like Bosch and Varta produce EFB batteries, making them easily accessible for various automotive applications.

 

AGM Battery 101

It is a type of deep cycle battery that uses Absorbed Glass Mat (AGM) technology. You can opt for this sophisticated gel battery design that results in less electrolyte loss than more traditional flooded lead-acid designs. Their sealed design improves the overall performance of your AGM battery.

Pros of AGM Battery

AGM batteries are maintenance-free batteries. They do not require the addition of water or electrolyte throughout their lifespan.

AGM batteries excel in deep cycling applications, making them suitable for applications that require frequent deep discharges and recharges.

AGM batteries are designed to be more resistant to vibrations and shocks compared to traditional flooded batteries. The internal components are tightly packed and secured, reducing the risk of damage caused by vehicle vibrations or rough terrain.

AGM batteries are versatile and find applications in various industries. They are commonly used in automotive, marine, motorcycles, and backup power systems.

We recommend our best selling Bosch AGM Car Battery which also comes with a 3 to 5 years warranty. Remember to always check the compatibility using our battery recommender on our website. Simply key in your car’s details on our website to know which batteries best suit your car or you can also reach out to our support team to ensure you purchase the correct battery.

 

Bottom Line

EFB batteries could be the best option for you if you have a basic start-stop vehicle. However, if your car has a higher electricity requirement (such as those with larger engines), we recommended the AGM battery.