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What is AGM in Car Batteries?

Published in Car Batteries 2 mins read

AGM in car batteries stands for Absorbent Glass Mat, referring to an advanced type of lead-acid battery. It's defined by the materials that make it unique.

Understanding AGM Batteries

AGM batteries are advanced lead-acid batteries where all of the battery acid is absorbed by a fine glass fiber mat. This design offers several benefits compared to traditional flooded lead-acid batteries.

Key Features of AGM Batteries

  • Absorbent Glass Mat: The "AGM" refers to the fine glass fiber separator between the positive and negative plates which absorbs all of the battery acid.
  • Sealed Design: AGM batteries are typically sealed, making them spill-proof and maintenance-free. This is in contrast to traditional flooded batteries that require periodic water addition.
  • Enhanced Performance: They offer improved performance in terms of vibration resistance, cycle life, and charging efficiency.

Benefits of Using AGM Batteries

  • Spill-Proof: Due to their sealed design, AGM batteries are much less likely to leak acid, making them safer.
  • Maintenance-Free: No need to add water or perform regular maintenance.
  • Durable: AGM batteries are more resistant to vibration and shock, making them suitable for demanding applications.

Where are AGM Batteries Used?

AGM batteries are commonly found in:

  • Vehicles with advanced electronic systems
  • Start-stop vehicles
  • Power sports equipment
  • Marine applications
  • Backup power systems

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