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Old 10-09-2018, 05:27 PM   #1
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Switch to 6-volt batteries?

On my Navion 24J, what do I need to do to reroute the wires to use two 6v batts? What Costco (Interstate) golf cart batt are you guys buying? Thx
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Old 10-10-2018, 12:56 AM   #2
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It's pretty simple, assuming the two 6-volts will fit in the same space as your existing batteries. Your existing pos and neg cables should reach the new batteries but you'll need a short cable to connect the pos of one 6v to the neg of the other. The remaining pos and neg posts will connect to your existing cables. Once you figure out the positioning of your batteries, measure how long the short cable needs to be and go to your local auto parts store, which should have what you need.

Since the 6v batteries are taller, make sure your terminals are adequately protected. You also may need to modify the existing hold-down bracket(s) or fabricate replacement(s).

If the 6v batteries won't fit the existing space, you'll need to get creative. Not being familiar with the Navion 24J, I can't advise you on that.

I wasn't aware that Costco sold different models of 6v golf cart batteries. When I bought mine a few months ago, there was only one choice.
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Old 10-11-2018, 10:40 AM   #3
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Here are pictures before and after. The hold down bracket will need to be changed because of the height of the 6 volt batteries. I went with T-145's and the next thing I did was separate the batteries to fill the tray and drop a pressure treated 2x4 in the center. Made me feel better not having the centers rubbing.
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Old 10-11-2018, 11:51 AM   #4
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Thanks Mike. So you didn't need to cut up the tray for the T145's? Just revise the hold downs? That's easy.
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Old 10-11-2018, 11:54 AM   #5
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Quote:
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Thanks Mike. So you didn't need to cut up the tray for the T145's? Just revise the hold downs? That's easy.
Correct no cutting required. Cheeseee easy!
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Old 10-17-2018, 05:41 PM   #6
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I know it is a short run between the batteries, but I don't skimp on wire diameter. No Auto Zone #6 for me. Went to West Marine and got a foot or so of either 0 or 00 and put copper ends on them. Probably overkill, but after 35 years on a boat living on 12 volts often, it is worth $20 extra for me.
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Old 10-17-2018, 05:47 PM   #7
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I know it is a short run between the batteries, but I don't skimp on wire diameter. No Auto Zone #6 for me. Went to West Marine and got a foot or so of either 0 or 00 and put copper ends on them. Probably overkill, but after 35 years on a boat living on 12 volts often, it is worth $20 extra for me.
The original parallel wiring was sufficient to use without buying any wire.
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Old 10-23-2018, 06:03 PM   #8
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Just curious- why switch to 6v batteries?
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Old 10-24-2018, 10:00 AM   #9
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12v to 6v change on 24M

Changed from 12V to 6V on 24M using Interstate batteries. Results from added Amp Hours was better then expected, would do it again. Found a large gauge jumper wire at local auto parts store. Most difficult part was the custom hold down clamp, takes some creativity to fabricate and install with the larger size 6v batteries.
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Old 10-24-2018, 11:17 AM   #10
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There are three basic types of lead-acid 12v batteries, starting, deep-cycle and marine, which are a combination of deep-cycle and starting. The most commonly found on RVs are starting (coach battery) and one or more marine batteries for the house. True, deep cycle 12 batteries are relatively rare.

6v "golf cart" batteries are deep cycle batteries with heavier duty plates. Two 6v golf cart batteries, connected in serial (+ to -) will deliver 12v. They will generally provide more amp hours than two 12v marine type batteries and, due to the thicker plates will be more durable and less susceptible to damage due to over/under charging or low water levels. True, deep-cycle 12v batteries will have similar advantages.
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Old 10-26-2018, 09:44 AM   #11
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Update from our first boondog with the 6v setup. Solar kept the batts charged and over night running two fans (Dyson table top and clamp prop fan over my face, love air flow for sleeping) with the inverter left plenty of capacity to brew coffee in the am and watch Direct TV until the commodore awoke. Very happy with the capacity increase!
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