Whatever marine battery you need, whether it’s for a
houseboat or a 30-foot sailboat, you’ll want to know the different options
available to you, and the pluses and minuses involved. Selecting the right
battery for you will depend on how you use your boat, the cost, and the kind of
boat you have. The most common chemical types are: gel, flooded and Absorbed
Glass Mat (AGM). Here are the key points of each.
Gel
These battery types include a silica-type gel made of fumed
silica, phosphoric acid, sulfuric acid, and pure water. These are generally a
little bit more expensive and not as powerful as an AGM battery of similar
size. Gel batteries are charged at a lower voltage than the other types, so
it’s crucial to carefully regulate charging.
Flooded
These batteries are the cheapest and most common marine
battery. They generate power with a pool of liquid sulfuric acid creating a
pathway linking lead plates. Flooded batteries necessitate regular checking and
the addition of distilled water. Positives include that they handle
overcharging better in comparison to other battery types, they are cheaper, and
used batteries are 98% recyclable.
AGM
Absorbed Glass Mat batteries include a mat doused in acid
electrolyte separating a battery’s negative and positive plates. They are the
preferred power source if you need a high burst of power periodically as well
as steady deep-cycle ability. They require little-to-no maintenance and also
have a long life expectancy. Because of these pluses, they are usually among
the most expensive type of marine battery.
Click here to learn more about marine batteries in San Diego.
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