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Old 10-29-2012, 11:28 AM   #1
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how many people run 2 house batteries?

I am going to install a battery cut-off, and the thought occurred to me that now is the time to add a second battery, but cannot decide if I want/need it.

Just curious how many people have installed the second battery, and what real world benefits you saw. Really only use the battery for the tongue jacks and possibly stab jacks, always plugged in by the time I do the slides etc.
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Old 10-29-2012, 11:43 AM   #2
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If you don't dry camp, then you don't really need another battery. Essentially, you are doubling your run time while unplugged to shore power. So for jacks, I wouldn't worry about it. If you want extra run time on refrigerator, or furnace, then I'd get the extra battery.
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Old 10-29-2012, 11:57 AM   #3
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We could run a poll and it might even be informative.

In reality as Wincrasher said, it only matters if you camp in places without AC power. If you "dry camp" - "Boondock" (no hookups), you will need bigger, better, and more batteries than a person who only uses their OEM battery when they open their slides or hooking up and disconnecting.
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Old 10-29-2012, 12:32 PM   #4
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Originally Posted by herk7769 View Post
We could run a poll and it might even be informative.

In reality as Wincrasher said, it only matters if you camp in places without AC power. If you "dry camp" - "Boondock" (no hookups), you will need bigger, better, and more batteries than a person who only uses their OEM battery when they open their slides or hooking up and disconnecting.
But then it would devolve into a 1/2 ton vs 3/4 ton discussion...

Sounds like no real advantage for me personally. I can't imagine boondocking this beast. Just need a battery disconect for storage.
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Old 10-29-2012, 01:27 PM   #5
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When we bought our rig (used) it had one very weak house battery. It was the original and had made it through 8 years. Since the battery tray was big enough for two that size, I went with a pair of Costco deep-cycle 12V RV/Marine batteries.

We didn't plan on much in the way of dry camping, but the batteries were cheap enough that I decided to fill the tray. We sometimes leave the MH unplugged at home, but we've never had the battery power run down.

If you do decide to double up, I'd recommend two new ones if the one you now have is more than about 5 years old.
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Old 10-29-2012, 01:48 PM   #6
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When installing multiple batteries it is a best practice to make sure that all batteries are the same size/model and are approximately the same age.

My Solera, that I am waiting 3 more weeks for, will replace our Trailmanor TT. With the Trailmanor and a pair of 12 volt group 24 Interstate RV/Marine batteries I can go 3 days without charging batteries.

Since April 2005 I have had hookups 3 times.

Some people go camping. Some go RVing, Some go boon docking.

I try to boon dock and I try to avoid RVing.

Each style has its own unique requirements.
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Old 10-29-2012, 02:01 PM   #7
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Quote:
Originally Posted by jeeplj8 View Post
But then it would devolve into a 1/2 ton vs 3/4 ton discussion...

Sounds like no real advantage for me personally. I can't imagine boondocking this beast. Just need a battery disconect for storage.



When your battery goes dead on your trailer, you should get a 3/4 ton truck. That's funny!! Thanks for the laugh!

Back on topic.. I did just replace the factory battery with 2 6 volt 235 AH golf cart batteries as I do end up in places that do not have shore power but great campsites that are not full.
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Old 10-29-2012, 09:06 PM   #8
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Quote:
Originally Posted by jeeplj8 View Post
Sounds like no real advantage for me personally. I can't imagine boondocking this beast. Just need a battery disconect for storage.
there's a difference between boondocking and dry camping. actually, you'd probably have an easier time boondocking with it, than dry camping with it.

since California state parks rarely have hookups of any kind, you have to be willing to dry camp, if you want to stay in their campgrounds.
so, we have two batteries and a Honda 2000.

though we've never boondocked yet, it still may be something we'll try next year.

but if you always have electric hookups, there's absolutely no reason to have two, unless you need the insurance in case one fails.
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Old 10-29-2012, 09:26 PM   #9
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When I had my boat set up, they rigged a 3-way switch - either battery 1, or battery 2 or both batteries or all off. When I asked my dealer to set up my TT that way, he looked at me like I was crazy and refused to do it!
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Old 10-29-2012, 09:33 PM   #10
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When I had my boat set up, they rigged a 3-way switch - either battery 1, or battery 2 or both batteries or all off. When I asked my dealer to set up my TT that way, he looked at me like I was crazy and refused to do it!
Same here, my boat has a three way switch and two batteries. We often need the second battery in the boat. I am going with the same style switch which made me wonder if I should do the second battery at the same time.
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