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| Boat Fishing & Boating A new forum at Striped-Bass.com for those fishing from boats and for boating in general |
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12-08-2009, 06:37 PM
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#1
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Registered User
Join Date: Sep 2001
Posts: 7,649
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Let's talk marine batteries
What do you like and why?
( need to re-do everything this spring) I was thinking of two lifeline 8D's for the house load and 1 group 31 for the starting battery.
I have been leaning to AGM's because they are sealed and will work in any orientation. But I had an AGM go bad on my other boat for some reason after a deep discharge. (pump left on for a few days) and it would not hold the charge very long after. I replaced it with a new one and all was good again.
What do you like and why?
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12-09-2009, 06:43 AM
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#2
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Registered User
Join Date: Jun 2003
Posts: 135
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Jim, I have great results with the AGM, one of there biggest plus is the ability to go way down and bounce back. You must have had a lemon. Good luck with the new ride,,,looks really nice.
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12-09-2009, 08:04 AM
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#3
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Registered User
Join Date: Jul 2002
Location: Boston
Posts: 68
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Those AGM's you had trouble with were not Optima's were they?
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12-09-2009, 08:46 AM
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#4
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Registered User
Join Date: Sep 2001
Posts: 7,649
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No, they were something I purchased from west marine. (Sea Volt brand I think). Over all they were fine for a couple of years but that one time I really discharged it to zero (by accident) the house battery was kaput after that. I bought it back and they tested it, and the machine just said "error" and it was a few weeks after the warranty expired (figures), they were group 27's. I replaced both of them (and sold them with the boat) and I still have the other old one and it is still very strong. One thing I learned that the output from most outboards alternators is not that great unless your running 5000rpm.
I am boning up on my marine electrical. I see a lot of things I want to change/add. I want to change the way the battery wiring /switches are laid out. I don't see the logic in the current layout. If I get in over my head I will bring it to an expert but I think I can straighten it out. I like doing it myself if I can this way I understand the inner workings if (when) something breaks.
A buddy told me once...in general buy batteries by weight: heavier= better. I like the theory behind AGM's I think they make the best sense for boats. However in the past there were two types of batteries: Deep Cycle and Starting. I understand they differences but the new AGMS are " Dual use", Both deep cycle and starting. There must be some advantage one way or the other I would think. Is a classic "starting battery" better than a "dual use" battery for starting and engine?
Last edited by Mr. Sandman; 12-09-2009 at 09:06 AM..
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12-09-2009, 08:52 AM
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#5
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Also known as OAK
Join Date: Apr 2003
Location: Westlery, RI
Posts: 10,408
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Quote:
Originally Posted by Mr. Sandman
One thing I learned that the output from most outboards alternators is not that great unless your running 5000rpm.
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Isn't that the truth! found that out more than once working w/ the r/v.
We killed one of our group 24 AGM SeaVolts after a severe draw-down too Jim, so it does happen, whatever they do say. |
Bryan
Originally Posted by #^&#^&#^&#^&#^&#^&#^&#^&#^&#^&#^&
"For once I agree with Spence. UGH. I just hope I don't get the urge to go start buying armani suits to wear in my shop"
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12-09-2009, 11:00 AM
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#6
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Registered User
Join Date: Jul 2002
Location: Boston
Posts: 68
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Jim,
Check out the Marine AGM batteries from Sears,these are made by Odessey for Sears and have heard good thing about them and the odessey's,but only come the largest is a group 31 I believe.
DieHard Marine Battery, Platinum PM-1 - Group Size 31M (with exchange)
Mike |
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12-09-2009, 01:22 PM
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#7
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Registered User
Join Date: Feb 2003
Location: Newtown, CT
Posts: 5,659
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I've been running 4D size seavolts for three years now. No problems except that I did ruin one by running it to zero. They can't take being run down that far and bounce back. I have one for each engine and one for the electronics/emergency.
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12-09-2009, 05:44 PM
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#8
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Registered User
Join Date: Dec 2003
Location: weymouth
Posts: 1,360
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I have two interstate that seem to work ok. Did have a dead battery a couple of times. Wasn't the batterys fault. I had them tested at the ZONE and seemed fine. I will charge them up this winter and use them again
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thats why they call it fishing not catching
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12-09-2009, 06:14 PM
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#9
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Registered User
Join Date: Mar 2004
Location: Candia, NH
Posts: 149
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maybe a dumb question, but what's "AGM"?
I have 2 batteries that will now die if left sit for a couple of weeks. Since I like to go off shore, I'm dumping them next spring for a piece of mind.
Look at the Sears link "Wrench" put up,,, $250 Each? Holly S%$#
I knew they where gona cost me, but never would have guessed that.
Maybe guys on those boats with bed sheets stuck to a pole have it right.
Never mind, back to reality,, small price to pay to go anywhere the wind does not blow.
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Love Fishing, wish I caught fish more often.
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12-10-2009, 10:28 AM
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#10
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Registered User
Join Date: Jan 2002
Location: North of Boston
Posts: 444
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Quote:
Originally Posted by angler management
maybe a dumb question, but what's "AGM"?
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Absorbed Glass Mat
The Odyssey 34M-PC1500 is the top dog in AGM batteries. |
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