Absorbent Glass Mat commonly known as AGM, is a type of battery under sealed lead-acid batteries. They are created in a flat, rectangular design. One feature of AGM batteries is the thin glass fibers interwoven into a mat. This makes the battery spill-proof, as the fibers containing the glass mat do not absorb the acid composition. Because of this, AGM batteries can be used without the limitations of hazardous materials.
AGM’s unique composition allows the batteries to produce high currents and longer life span. The technology also minimizes internal resistance and helps the battery to survive low temperatures. Users can benefit from AGM’s deep cycling capability. It also offers a charging speed that is 5x faster than a flooded cycle battery.
Common Uses
AGM has been around since the early 1980s. It was first used for military aircrafts and UPS (uninterrupted power supply) because of its weight, safety and long-lasting power. Presently, AGM batteries are used in powering cars and car accessories such as steering wheels, windshields and heated seats. Racing leagues such as NASCAR choose AGM products because of its resistance to vibration. The battery also performs well in cold temperatures, which is why AGM batteries are prevalently used for motor homes and robotic applications.
Advantages of AGM Batteries
- Low internal resistance
- Longer, efficient usage
- Ability to survive low temperatures
- Spill proof
- Responsive to load
- Water retention
- Faster charging time compared to flooded batteries
- Less prone to topping charge, can be stored for a longer time
Disadvantages of AGM Batteries
- More expensive than other batteries
- Its performance and capacity gradually declines in time
- AGM batteries are sensitive to overcharging
- They are less eco-friendly when compared to other batteries because of its reduced electrolyte content.
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Image Credits: Motorcycle Parts UK
