For Automotive industry there are mainly two type of batteries when it comes to Auto Stop start battery.
Difference between stop start batteries – EFB & AGM Batteries
AGM (Absorbent Glass Mat) and EFB (Enhanced Flooded Battery) are both types of lead-acid batteries, commonly used in vehicles with stop start battery systems. Here’s a breakdown of their key differences:
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- AGM Batteries: AGM batteries use an absorbent glass mat that holds the electrolyte in place, making them spill-proof and allowing them to handle deeper discharges.
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- EFB Batteries: EFBs are advanced versions of standard flooded batteries with enhanced durability. They feature improved plate design and added additives to enhance performance and cycle life.
Design and Technology
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- AGM Batteries: AGM batteries use an absorbent glass mat that holds the electrolyte in place, making them spill-proof and allowing them to handle deeper discharges.
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- EFB Batteries: EFBs are advanced versions of standard flooded batteries with enhanced durability. They feature improved plate design and added additives to enhance performance and cycle life.
Performance and Usage
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- AGM Batteries: They have a higher depth of discharge (DoD), meaning they can be drained and recharged more often, making them suitable for start-stop systems and vehicles with high electrical loads. AGMs also recharge faster than EFBs.
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- EFB Batteries: EFBs have an improved cycle life compared to traditional flooded batteries but generally perform lower than AGMs in terms of deep cycling. They are often used in entry-level start-stop systems where frequent restarts occur.
Durability and Lifespan
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- AGM Batteries: Known for their high durability, AGM batteries generally have a longer lifespan due to their design, especially under heavy usage conditions.
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- EFB Batteries: EFBs are more durable than standard flooded batteries but may not last as long as AGMs under similar conditions.
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- AGM Batteries: Typically more expensive because of their advanced technology and performance advantages.
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- EFB Batteries: Generally less expensive than AGMs, offering a middle ground between standard flooded and AGM batteries.
Maintenance
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- AGM stop start Battery: Maintenance-free, sealed design. They are heavy and solid like a brick.
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- EFB stop start Battery: Usually maintenance-free but still vented, similar to traditional flooded batteries.
Conclusion
In summary: AGM batteries provide higher performance, better deep-cycling ability, and faster recharging, making them ideal for heavy-duty applications. EFBs offer improved durability over regular flooded batteries at a more affordable cost, suitable for moderate start-stop systems. At last, We would suggest that replace like to like, For example if your car came with AGM battery from factory replace with AGM battery, If factory battery was EFB replace with EFB Battery. If you are not sure what battery to use click here to find from Experts
