MONOBLOCK AGM BATTERIES

AGM Batteries

Introduction AGM Batteries

In AGM batteries, there is a thin ultra-fine fiberglass mat sandwiched between the plates that is saturated with battery acid to about 95% of what they can hold. This mat is then packed in between the plates and slightly compressed, then welded/soldered in place. Because the plates and mats are packed fairly tight, they are almost immune to vibration.

AGM technology became popular in the early 1980s as a sealed lead acid battery for military aircraft, vehicles and UPS to reduce weight and improve reliability. The sulfuric acid is absorbed by a very fine fiberglass mat, making the battery spill-proof. This enables shipment without hazardous material restrictions. The plates can be made flat to resemble a standard flooded lead acid pack in a rectangular case; they can also be wound into a cylindrical cell.

AGM batteries have very low internal resistance, is capable to deliver high currents on demand and offers a relatively long service life, even when deep cycled.

The leading advantages of AGM are a charge that is up to five times faster than the flooded version, and the ability to deep cycle. AGM offers a depth-of-discharge of 80 percent; the flooded, on the other hand, is specified at 50 percent DoD to attain the same cycle life. The negatives are slightly lower specific energy and higher manufacturing costs than the flooded, but cheaper than the gel battery.

Maintenance and Handling of AGM Batteries

AGM batteries are maintenance free, provides good electrical reliability and is lighter than the flooded lead acid type. While regular lead acid batteries need a topping charge every six months to prevent the buildup of sulfation, AGM batteries are less prone to sulfation and can sit in storage for longer before a charge becomes necessary. The battery stands up well to low temperatures and has a low self-discharge. AGM and other sealed batteries do not like heat and should be installed away from the engine compartment.

AGM Batteries Warranty

Tensite brand offers a 2-year warranty is offered from the moment of purchase for AGM 12V monoblock batteries. This guarantee would be valid during those two years provided that the use, handling and compatibility of the battery by the customer has been adequate and the failure comes from an error in its manufacture. The company will take the necessary steps to ensure that the battery failure comes from a manufacturing error.