AGM Batteries
An AGM (absorbed glass mat) battery contains a special glass mat separator that wicks the electrolyte solution between the battery plates. These materials design.
enables the fiberglass to be saturated with electrolyte – and to store the electrolyte in
a “dry” or suspended state rather than in free liquid form.
AGM batteries are high quality and work at optimal capacity at a large range of temperatures. They work great for all high amp needs and have a very slow self-discharge rate (meaning you can leave one plugged in and you won’t waste a lot of energy). The thick AGM separator absorbs and holds acid to prevent spilling.
Manufacturing costs are higher, making the batteries more expensive. They are sensitive to overcharging and high voltages, and require full charging between uses, which can make them un-suitable for some applications where returning them to a full charge is difficult.