AGM Car Battery – Application Features And Benefits

Absorbed Glass Mat (AGM) automotive batteries are known for their exemplary performance and for being a real maintenance free product. Reason being, they are not wet flooded like other so-called non-maintenance batteries. So what makes AGM car batteries more powerful? There are a number of reasons, which we will explain in this article.

They have highly porous glass fleet separators (absorbed glass mats) between the plates, preventing the electrolyte moving around. While gel cell automotive batteries are also spill-proof, one of the advantages AGM batteries have, is that they can withstand more impact.

What are the advantages of an AGM car battery over conventional types?

  • Power

Have the capability to start engines, even if they are significantly drained. This makes them ideal for newer vehicles that have start-stop technology, which shuts off a car’s engine when it is idling, to conserve energy. These cars need a particularly powerful battery to operate, because it needs to power other auxiliary components of the car while the engine is off.

  • Reliability

They can be significantly discharged without suffering damage, and can be recharged ((3 times cyclic endurance ability) after sitting idle for an extended period of time without any negative effects.

  • No maintenance required

You don’t need to top up the liquid levels of an AGM car battery because they are not wet flooded. They have a recombinant chamber, which means the hydrogen and oxygen gasses combine to form fluid which is returned to the glass fleet separators.


Vehicles with “Idle-Stop-Start” technology can only be fitted with AGM batteries. However, AGM Technology is also highly suitable for conventional high performance and luxury vehicles with large auxiliary loads.

Next Page: Wet Flooded Battery