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Old 05-05-2010, 02:19 PM   #1
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Default Time for Replacement Batteries

I have a GW Marlin 30 w/ twin 225hp Yamaha's. Navnet Radar/GPS and Furuno 585 Fishfinder, also a VHF and Furuno rd30.

The boat currently has 4 DEKA 24m7 Marine Master Batteries. They are original (2004) and haven't once given me a problem, however with over 700 hrs., I think I'd better replace them rather than have problems offshore.

I've been considering the "Gel" Batteries as replacements...

Thoughts and suggestions are much appreciated.


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Old 05-05-2010, 02:26 PM   #2
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Don't get gels. AGM's are a better choice. Could even get 2 wet cells for cranking and 2 AGM's for house. I assume that's how they're set up.
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Old 05-05-2010, 03:31 PM   #3
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Six years and 700 hours on what you currently have seems like a pretty damn good service record. If what you have installed are still available I would go with what is known to work. That is, just get more of the same make, type and size.

If it ain't broke, don't try to fix it.

Other opinions may vary.
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Old 05-05-2010, 06:59 PM   #4
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I agree with Jethro, but if you have to swap brands definately get the AGM's, stay away from Gels. Sears actually sells one of the best marine AGM's IMO.
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Old 05-05-2010, 08:03 PM   #5
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West Marine sells those same batteries, manufactured by Deka. (WM puts their name on them). I bought a pair 2 weeks ago for $71 each. I'd go with them again.
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Old 05-05-2010, 09:24 PM   #6
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Don't get gels. They require special charging. Get AGMs. Optima, Sears Die Hard, Cabelas all seem good based on reviews on THT. I've always used Optima with good results.
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