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#1
12-12-2009, 11:50 AM
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Marine Batteries
I already know I'll need to replace both of my batteries for next season. I usually just leave this to my marina's service department, and usually pay way more than I should- not this time! Any suggestions for buying? Does it make much difference or are they all basically the same? Thanks for the help.
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#2
12-12-2009, 12:01 PM
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Re: Marine Batteries
The right size and type battery is important. You should have sealed, marine-grade batteries. Most common sizes are group 24 and group 27 starting batteries, and gel batteries are MUCH better than lead-acid.
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Common Sense is learning from your mistakes. Wisdom is learning from the other guy's mistakes. Fr. Frank says: Jesus liked fishing, too. He even walked on water to get to the boat! Currently without a SeaCraft  (2) Pompano 12' fishing kayaks '73 Cobia 18' prototype "Casting Skiff", 70hp Mercury
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#4
12-12-2009, 01:45 PM
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Re: Marine Batteries
All batteries are not the same! Even within Johnson controls who makes a huge number of brands at numerous price points, the quality ranges from top of the class to depths of Bowery gutters in bad times.
I also have group 27 Deka AGM, deep cycle for house and starting for starting. Bought them from a battery shop for nearly half of the West Marine price. Thus far I've had better luck with AGM than gel, but I think the manufacture quality may have more to do w/that than the type. If you have a newer motor you may have to go up to a Group 31 to get desired cranking amps (e.g., I think Optimaxes require at least 1000 cca). I think a key to longevity of any battery is that it be used or charged regularly. Even Concorde and Rolls batteries will fail if they just sit...
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there's no such thing as normal anymore...
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#5
12-12-2009, 01:53 PM
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Re: Marine Batteries
I remember one of the CSC members becoming a marine battery rep, maybe if someone remembers his name they can provide him as a reference and he can help you out. Not sure about his location.
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#7
12-12-2009, 08:27 PM
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Re: Marine Batteries
The AGM can be mounted pretty much anyway way you want to mount them; upright, on their side or end and I believe even upside down.
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Getting home is more important than getting there! Plan accordingly!
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#8
12-12-2009, 10:28 PM
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Re: Marine Batteries
Whatever battery you choose, make sure to have them connected to a "smart charger" all the time, one that matches your battery type. I use West Marine batteries and adding the right charger more than doubled the life of the batteries.
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