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Old 11-24-2014, 10:49 AM   #1
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Replacing single 12 volt battery 3170ds

I need to replace the single 12 volt Battery, thinking of 2 6 volt deep cycle batteries. Do I need to change the inverter or any other component? How to install cables? Any suggestions on batteries. Thanks
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Old 11-24-2014, 11:19 AM   #2
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No just wire the two 6V batteries in series, they are just like a 12V battery then.

http://www.marxrv.com/12volt/12volt.htm
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Old 11-24-2014, 11:26 AM   #3
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As long as you have the space requirements and proper venting no additional modifications are required other than hooking up the two batteries in series. Hookup is positive to negative on the batteries (with proper size cable between batteries) and the trailer cable is positive cable to the remaining positive post on the battery and negative cable (trailer) to the remaining negative post on the battery. I use 2 golf cart 6 Volt batteries.
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Old 11-24-2014, 12:12 PM   #4
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Is a person better served using 2 6volt batteries vs 1 12 volt?
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Old 11-24-2014, 01:28 PM   #5
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Is a person better served using 2 6volt batteries vs 1 12 volt?
You will gain amp hrs if you are a boondocker or not. If you are teather type person at a CG with power, just use a 12v. Cheaper, depends on how you use your trailer.
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Old 11-24-2014, 01:40 PM   #6
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I have 2 12v batteries paralleled just because I didn't want to buy 2 new batteries, already had the battery the rig came with. Been working great for me. Even though I haven't really stressed my 2 battery set up I have room to add 2 more if needed for a 4 bank system.
OP, a two battery set up of 6v or 12v will always serve your needs better. Cons- a 2, 6v battery set up if one battery fails your on a pickle without power. Just something to think about.
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Old 11-24-2014, 01:48 PM   #7
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Originally Posted by mud yapster View Post
I have 2 12v batteries paralleled just because I didn't want to buy 2 new batteries, already had the battery the rig came with. Been working great for me. Even though I haven't really stressed my 2 battery set up I have room to add 2 more if needed for a 4 bank system.
OP, a two battery set up of 6v or 12v will always serve your needs better. Cons- a 2, 6v battery set up if one battery fails your on a pickle without power. Just something to think about.
i Have two 12 volt, plenty of power for my camping type. Last time I boondock was in the Army. You make a good point if a 6 volt gets a bad cell your just screwed. But everyone is different...
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Old 11-24-2014, 02:07 PM   #8
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LOL my dad and I boondocked everywhere and anywhere while I grew up as a Army Brat. Caves, tents, Army trucks, slept in a tank once, helicopter once, you name it we loved to camp anywhere and everywhere. The good old days we always had a blast!!!
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Old 11-24-2014, 07:36 PM   #9
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I'm very weight conscious and almost never camp without hookups so I removed my second 12v battery. Unless you boondock I would stay with one battery. I needed a battery in another camper so it didn't go to waste.
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Old 11-24-2014, 07:53 PM   #10
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I'm very weight conscious and almost never camp without hookups so I removed my second 12v battery. Unless you boondock I would stay with one battery. I needed a battery in another camper so it didn't go to waste.
Good idea for some but I'm already towing 16,000 lbs. so another 70# battery doesn't hurt me and on the way back from camping I've lightened the beer load so I'm saving fuel. LOL
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