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Batteries

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Battery University Table of Contents. An Idiot's Guide to Deep Cycle Batteries. I have to disagree with most of Mr. Sterlings' pronouncements as they are just plain wrong. Quoting from the referenced article: "So in my simple mind the AGM is about 3 times more expensive than the standard one. And the Gel, about 5 times more. Comparing marine batteries (Gel, Absorbed Glass Mat (AGM), flooded lead acid) Battery Types: Flooded versus AGM and Gel. On the kinds of batteries we may use on board: The most common kind of battery in Marine use today is the lead acid battery.

Battery Types: Flooded versus AGM and Gel

Using an electrolyte consisting of sulphuric acid, these cells can store impressive amounts of electrical energy in a relatively small space. This energy is stored in chemical form within lead grids mounted inside the battery. The reliance on lead grids and paste explains the great heft of lead-acid batteries. The battery universe is further divided along the lines of battery construction.