Sealed Batteries - GEL Cell or Absorbed Glass Mat (AGM)
Wet Cell, GEL, and AGM batteries are all Lead Acid Batteries, so the technology is the same. Do remember that you must be able to charge your (lead acid) batteries fully at least once every ten days, so just buying a big battery causes you to have a big charging system, or the batteries will surely fail.
Wet Cell Batteries need maintenance and attention; i.e. the never-ending periodic adding of distilled water and keeping the cables clean. They are a good choice economically and they're less expensive than AGM or GEL batteries.
Absorbed Glass Mat (AGM) Batteries are valve-regulated sealed batteries. They are not maintenance free. AGMs do not need the periodic addition of water. Without the fine mist of sulfuric acid, connector cables stay cleaner. Because they are sealed, AGM batteries are not hazardous shipments and they will not freeze even when deeply discharged. AGM batteries cost about a third more than their wet cell counterparts.
Gel Cell Batteries Also valve regulated sealed batteries. The sulfuric acid is mixed with silica sand to make a "mud". There are several characteristics I don't like about these. They're not kind to a hard charge and you can "cook" them easily. If you heat them up the "mud" dries out and cracks, just like all mud, and leaves voids next to the grids, thus killing off some of the capacity. These batteries do have folks that love them and swear by them, but they are a small group who know how to maintain them. For most folks, I would recommend buying AGM instead.
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- Lifeline GPL-3100T 800 CCA Amps AGM Crank Start 12V Battery CON-66003 Lifeline$376.00
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