Technology became popular in the early 1980s as sealed lead-acid batteries for military aircraft, vehicles, and UPS to reduce weight and improve reliability. The sulfuric acid is absorbed by the very fine glass fiber mat, which makes the battery splash-proof. This makes transportation not restricted by hazardous materials. The plate can be made into a flat shape, similar to the standard immersion lead-acid package in a rectangular enclosure. They can also be wound into cylindrical cells.

　　Sealed AGM Battery has a very low internal resistance, can provide large current on-demand, and can provide a relatively long service life even in deep cycles. AGM is maintenance-free, provides good electrical reliability, and is lighter than the submerged lead-acid type. Ordinary lead-acid batteries need to be recharged every six months to prevent the accumulation of sulfate, while AGM batteries are less prone to sulfation and can be stored for a longer period of time before they need to be recharged. The battery can withstand low temperatures well and has a low self-discharge rate.

　　The main advantage of AGM is that the charging speed is five times faster than the overflow version, and it is also a Sealed Deep Cycle Battery. The depth of discharge of AGM is 80%; on the other hand, in order to achieve the same cycle life, overflow is designated as 50% of DoD. Negative ions have slightly lower energy than overflow and higher manufacturing costs, but they are cheaper than gel batteries.