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Old 07-25-2021, 07:58 AM   #1
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Everyone at some point needs new batteries

I just purchased a used MH (1990 Southwind w/26,000 miles). One of the things that I noticed is that it only has one 12V battery on a tray that looks like it would accomodate three batteries. I can see 3 unused battery leads in this space. Are there 2 pos and one neg?

Where is the best place to buy batteries. Looking online they're pretty pricey. Also I've noticed some people talking about using 6V batteries wired in series. Is this a better way to go?
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Old 07-25-2021, 08:10 AM   #2
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Getting started

If your just getting started, keep it simple. 6 volt flooded batteries are the least expensive way to go. If your not sure how your going to be camping and your just learning, they will get you started. Got mine at interstate battery. Four for a little over 100 bucks each. your coach electric is a combination of 12 volt, and 120. 2 6volt batteries supply that 12 volt power. Your shore power, generator, and converter provide your 120. Properly maintained flooded batteries should last you 4 to 6 years no problem. After that you can make a better informed decision based on your camping style.
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Old 07-25-2021, 08:14 AM   #3
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Couldn’t have said it any better myself!
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Old 07-25-2021, 08:29 AM   #4
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If you only travel from one full hookup site to another, one battery may suite you fine….. do you need the ability to run the heater overnight without electrical hookups? Something to consider……. as there are a fair number of people on this forum which ask the opposite question you asked…. i.e. can I get by on just one 12 volt battery since buying and maintaining four batteries is never needed ?
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Old 07-25-2021, 12:14 PM   #5
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You can run a couple of 12v batteries in parallel or 6v in series. 6v GC2 batteries are true deep-cycle batteries, which will give you better life than 12v "marine/rv" batteries. GC2 Duracell or Crown batteries are available at Batteries Plus. Sams Club sells GC2 Duracell for about the same price.

Cheapo "Neverstart" batteries last approximately 13 months, just long enough for the warranty to expire.
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Old 07-25-2021, 04:55 PM   #6
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I don't know if your rig is a gasser or diesel - diesels need a little more oomp to turn over, IMO.
My vote for best battery is Trojan. I paid $118 for each 6V battery - needed 4. If they have a regular marine type 12V I would buy that also from them (my place didn't and said they were having trouble getting 12V). Great batteries.
I paid $131 for a Duracell Marine starting battery at Battery plus.
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