An AGM battery, or Absorbed Glass Mat Battery, is a type of rechargeable lead acid battery. The difference between an AGM and other types of batteries is that the liquid electrolyte is absorbed into fiberglass mats rather than being held in a separate tank outside the cells as in standard wet-cell batteries.

This results in considerably less leakage from the cell to cause pollution, lower self discharge rates so they can be stored for longer periods without charging and higher current capability because there are no limitations on how much charge the plates can accept if they are submerged under the electrolyte which also improves performance during high discharge rate operations such as starting motors.



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