AGM batteries are not Gel batteries. The name Gel battery is used incorrectly a lot of times these days. Gel batteries were the new technology for spill proof batteries, but they have fazed them out for automotive use. AGM stands for Absorption Glass Mat which is what the newer high performance batteries use. The term Gel has stuck in the terminology for all of the sealed batteries however as they were the first completely sealed battery. They are mostly used in power back up systems and electronics use today for alarm systems and such. (and apparently personal scooters as well)
Copied from Internet.....
AGM (Absorption Glass Mat) sealed battery technology was originally developed in 1985 for military aircraft where power, weight, safety, and reliability were paramount considerations.
AGM battery technology has continued to develop and offer improvements over other sealed battery technologies. AGM technology has become the next step in the evolution of both starting and deep cycle sealed batteries for marine, RV, and aviation applications. This "next generation" technology delivers increased safety, performance, and service life over all other existing sealed battery types, including gel technology.
In AGM sealed batteries, the acid is absorbed between the plates and immobilized by a very fine fiberglass mat. No silica gel is necessary. This glass mat absorbs and immobilizes the acid while still keeping the acid available to the plates. This allows a fast reaction between acid and plate material.
The AGM battery has an extremely low internal electrical resistance. This, combined with faster acid migration, allows the AGM batteries to deliver and absorb higher rates of amperage than other sealed batteries during discharging and charging. In addition, AGM technology batteries can be charged at normal lead-acid regulated charging voltages, therefore, it is not necessary to recalibrate charging systems or purchase special chargers.
My original equipment battery is a Yuasa AGM battery.
