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Old 08-17-2019, 07:30 PM   #1
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House Battery Dilemma

I have a 2016 Bounder 35K, today as I was checking on the electrolyte level in house batteries, one showed plates (no electrolyte above), rest I had to add quite a bit of distilled water to. (I have 4 6 volters). Thinking, since we do not boondock if/when comes time to replace-could 2 6 volters get the job done? When travel, we only travel 6-7 hours 250-300miles. Would 2-12's be better?? Your thoughts please......TYI
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Old 08-17-2019, 08:26 PM   #2
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If your refrigerator is a house refrigerator, than stick with the 4- 6 volts. I have 4-12 volts in my new coach and they just don't cut it. Get a hydrometer and you can test each cell in the batts and find the bad one. I just replaced the bad batt if it was under 5 years old, but everyone says to replace all at once. My opinion. good luck.
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Old 08-17-2019, 09:47 PM   #3
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Traveling isn't an issue since the engine charging system also charges the house batteries.
The only time you need battery capacity is at meal or rest stops. Even then you can start the generator.

If you don't plan on dry camping at all, just install one big GP31 battery. Plenty of power to keep things running for quite a few hours.

If you don't feel comfortable with that, the go with 2 6 volt GC2 batteries in series. Plenty of power for a low cost, if bought at Sam's, Costco or Batteries+.
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Old 08-18-2019, 03:15 PM   #4
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It pains me to see comments that lump all 12v batteries into one group and damn them as one. Voltage is not the criteria - it is deep cycle design vs SLI (starting battery) & Marine/RV hybrid. Trojan, Lifeline, Rolls and others make outstanding 12v deep cycles that can easily match the amp-hour and discharge cycles of a golf car 6v.


If you want two true deep cycle batteries that can deliver 210-230 AH (what a pair of GC2 6v can do), a pair of Trojan Group 27 deep cycles will do it nicely. The 27TMX delivers 210 AH and the 27TMh does 230 and will last as long as any GC2 type. That said, the GC2 6v will probably be cheaper, so maybe the most economic solution for you.


As for cutting down on battery AH, yes you can do it if your mostly move from electric site to electric site. 210 AH (the pair of 6vs you probably have) should readily get you thru a day of driving to the next campsite (or home). Just get plugged in when you get there.
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Old 08-22-2019, 06:16 PM   #5
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I would not reduce the battery bank. Before I replaced mine with lithium I did a little analysis. Overnight (say from 6PM to 8AM) will use about 120 amp hours with the residential refer on and maybe watch some TV charge an iphone and use some lights.
Do the match and you'll see you NEED the 4 just to do an overnight. Also, you will not be able replace the batteries under the steps with anything bigger as they are already VERY tight in there. There is simply not enough room.
I upgraded to 600AH of lithium, moved them away from under the stairs and never regretted it.
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Old 08-22-2019, 07:39 PM   #6
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He stated he does not boondock, so no overnight battery capacity needed.
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Originally Posted by computerguy View Post
I would not reduce the battery bank. Before I replaced mine with lithium I did a little analysis. Overnight (say from 6PM to 8AM) will use about 120 amp hours with the residential refer on and maybe watch some TV charge an iphone and use some lights.
Do the match and you'll see you NEED the 4 just to do an overnight. Also, you will not be able replace the batteries under the steps with anything bigger as they are already VERY tight in there. There is simply not enough room.
I upgraded to 600AH of lithium, moved them away from under the stairs and never regretted it.
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Old 08-23-2019, 07:24 PM   #7
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Thank you all for your input on this subject.....I appreciate your thoughts and am taking them all into consideration...am leaning on replacing all 4...when the time comes to keep it as the manufacturer intended it to be. Sure do not want to cause any electrical issues!!!!!! Thanks again for your thoughts/advice....
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Old 08-23-2019, 11:00 PM   #8
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Quote:
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He stated he does not boondock, so no overnight battery capacity needed.
I'd hardly call overnighting boondocking. But everyone defines things differently. To each their own. Just trying to help
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Old 08-26-2019, 12:45 PM   #9
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I guess it all comes back to the adage "best to have and not need than to need and not have"-especially watching the weather (and being in Florida at moment), never know if will be needed 'down the line'. Thanks for all the thoughts and ideas.
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Old 09-01-2019, 10:40 AM   #10
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You need to check the batteries at least once a month. I'm now down to the 6 week program because I now know how much water they use.
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