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Old 25-10-2018, 12:25   #1
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AGM battery advice

We want to replace our aging Yuasa #24 batteries. They are 8 yrs old almost to the day and although they seem fine the total bank of 8 with a capacity of 100 ah each, declines overnight from fully charged as indicated by our Link 10 monitor to 12.4 volts with a consumption of only 50 ah.

Other than that drop in voltage we are not having any problems. The marina where we are located does not have power on the docks and we keep up with our daily demand with solar power only. The engine starts immediately and we do not need to use it for charging.This daily use includes a fridge, all fans in this hot place, lights, computers (internet) and frequent use of power tools as we prepare GAIA for the sea after completing a circumnavigation with the identical setup. Of course as everyone knows Florida is a sunny place!

As we are planning a lengthy stay in the Bahamas this winter we think it might be prudent to replace them here in the USofA, (Port LaBelle Florida)

We would like to replace them with the identical battery but Yuasa no longer makes it and besides I am having trouble finding a source that sells Yuasa batteries.

Does anyone have equally satisfying experience with another manufacturer?

Although we plan on selling GAIA somehow somewhere this winter it would be nice to hand her over with a bank of batteries that will last for an equally long time.

Jim
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Old 25-10-2018, 12:44   #2
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Re: AGM battery advice

Lifeline, Odyssey or Northstar, much better than what you had.

But only if you really need AGM, FLA are much better value.
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Old 25-10-2018, 13:48   #3
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Re: AGM battery advice

We got very long life -- 11+ seasons -- from our first bank of 3x Odyssey PC-2150 (Group 31) 12V AGMs, and our other bank of same looks like lasting as long (it's at 9+ seasons now).

I replaced the first bank finally with 4x Lifeline GPL-4CT (GC2) 6V AGMs, to increase our initial capacity on that bank from 300 Ah to 440 Ah... but it's only been a couple seasons yet so I don't have longevity data.

Neither of these were inexpensive, but our use case favors AGMs and I certainly got my money's worth with the Odysseys and I have hopes for the Lifelines.

-Chris
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Old 27-10-2018, 08:08   #4
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Re: AGM battery advice

Many tx Chris for the reply. I thought our 8 yrs were good but you are doing much better!

Jim
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Old 27-10-2018, 10:56   #5
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Re: AGM battery advice

Our situation is very easy on AGM batteries, so YMMV.

-Chris
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Old 29-10-2018, 09:07   #6
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Re: AGM battery advice

Hey Jim!

Mike and Annette from Rum Doxy here. Just stumbled across your post. Good to hear you are still kicking, if you will pardon the reference. Sad to hear you are selling Gaia, but you have certainly put her to good use. Boatyards just won't be the same without you guys. Funny, but we met some other nice folks on another Colvin named 'Gaia' in Mexico last year. Hope all is well and best to Helen.
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