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06-18-2018, 09:55 AM
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#1
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Veteran Member
City: Titusville,Fl
Vessel Name: Moonstruck
Vessel Model: 41' Defever
Join Date: Jan 2015
Posts: 97
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Another battery question
Hi to all,
We have a battery bank with 4 12 volt batteries. One of the batteries is going bad. We will soon be converting to a 6 volt golf cart bank. Until we do is it acceptable to replace the one bad 12 volt with another 12 volt battery without replacing the whole bank?
Thanks
Gordo
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06-18-2018, 10:01 AM
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#2
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Guru
City: Ashland, MA
Vessel Model: 1990 Silverton 40 aftcabin
Join Date: Jul 2016
Posts: 1,208
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Sure!
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06-18-2018, 10:10 AM
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#3
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Guru
City: North Vancouver
Vessel Name: Phoenix Hunter
Vessel Model: Kadey Krogen 42 (1985)
Join Date: Apr 2011
Posts: 2,877
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Gordon, for now I’d just pull the one 12V battery and leave it at that unless you can find a similar used battery around. Putting a new battery in will just send good money after bad. When will you install the gold cart batteries?
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06-18-2018, 10:33 AM
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#4
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Guru
City: Ashland, MA
Vessel Model: 1990 Silverton 40 aftcabin
Join Date: Jul 2016
Posts: 1,208
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One never knows how abused a used battery is. What you purchase may be no better than the one you replace.
If the OP’s battery load is such that without a replacement battery, the remaining capacity could be insufficient to support his electrical load demand.
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06-18-2018, 10:46 AM
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#5
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Guru
City: Gig Harbor
Vessel Name: Kinship
Vessel Model: North Pacific 43
Join Date: May 2015
Posts: 9,046
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Unless you have a 24v system, why not just remove the bad 12v battery and go with the 3 remaining batteries until to replace the bank? If the one battery really is bad, it isn’t adding much to your AmpHours.
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06-18-2018, 12:30 PM
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#6
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Guru
City: Madeira Beach, FL
Vessel Name: Seaweed
Vessel Model: Schucker mini-trawler
Join Date: Oct 2011
Posts: 1,236
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I would replace said battery with a new battery, HOWEVER I'd separate it as a second bank. Then I would set the Perko switch to Both. I have done this and for me it works.
That said, I do check my batteries on the 1st of each month. I use Lead Acid, inexpensive Walmart batts aboard Seaweed.
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06-18-2018, 12:38 PM
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#7
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Guru
City: Marion, Massachusetts
Vessel Name: Wanderer
Vessel Model: Pilgrim 40
Join Date: Sep 2016
Posts: 632
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I had the same problem with my daughters golf cart. Got a nice used battery (no guarantees) from a golf cart maintenance company. I think it was 25$.
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