switching to two 6 volt batteries??? - Fiberglass RV


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Old 10-15-2014, 06:05 PM   #1
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switching to two 6 volt batteries???

Hi all, Im looking for any advise on removing the 12 volt battery and installing two 6 volts on my 1998 BF 21 ft. I did some quick measurments and there doesnt seem to be a lot of room for the two new 6 volt batteries and still be able to pull the propane tanks.
Thanks
Bob
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Old 10-15-2014, 07:52 PM   #2
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I would love to have 2 six volt golf cart batteries instead of the single 12 volt but I don't have the room and adding more weight to the tongue also creates more problems for me. If I had the physical room and could handle the extra weight on the tongue I would certainly do it.
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Old 10-15-2014, 10:29 PM   #3
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Old 10-15-2014, 10:51 PM   #4
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I own a BF 21 I have 2 6-volt batteries in front of the propane tanks under the cover. I have the tanks filled in place.
Chuck
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Old 10-16-2014, 07:00 AM   #5
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I didnt think you could get the tanks filled up without placing them on a scale!
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Old 10-16-2014, 07:33 AM   #6
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I am changing from two propane bottles and one (12V) battery to one propane and two (6V) batteries. There will some weight increase but not much, and I tow with a 1/2 ton pickup so it will not hurt. The batteries will sit behind the single propane and the new set up is actually cleaner looking as the old dual propane hung over each side of the tongue.
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Old 10-16-2014, 07:36 PM   #7
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If two 6-volt batteries will not fit, how about swapping the typical group 24 that comes with most trailers with a group 27 or 31? I swapped in a group 27 on my Scamp, and went from about 80 amp hours of storage to about 100 amp hours.

Measure the space for your battery carefully before you buy.8-)

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Old 10-18-2014, 10:44 AM   #8
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Well thanks for the info but I'm going to put a little more thought on how to go about it. I've read some articles of some guys going to 20lb prop. tanks and moving them closer to the trailer, other guys are removing one tank. I still think I can get the two 6 volts under the cover and keep the tanks as they are.
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Old 11-26-2014, 04:40 AM   #9
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What would the advantage of having two 6 volt batteries which I assume you would be hooking up in series to get 12 volts vs having two 12 volt batteries hooked up in parallel to get 12 volts with more capacity. Just curious.
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Old 11-26-2014, 06:57 AM   #10
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I've been told that they last much longer.
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Old 11-26-2014, 07:16 AM   #11
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Originally Posted by Captleemo View Post
What would the advantage of having two 6 volt batteries which I assume you would be hooking up in series to get 12 volts vs having two 12 volt batteries hooked up in parallel to get 12 volts with more capacity. Just curious.
All things equal there wouldn't be any advantage. But, in the real world it seems true deep cycle 6V batteries are more available and more economical for their capacity and size. Luckily we have a lot to choose from in batteries and you just need to access your needs and constraints and go from there in making your choice.
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Old 11-26-2014, 08:18 AM   #12
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Larger capacity in two 6 volt batteries and if you're a boondocker, that may be important to you.
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Old 11-26-2014, 09:40 AM   #13
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6 V golf cart batteries have the same foot print as a group 24 battery. They are however taller. If you add another 12 V battery to your trailer, you can either put them in parallel, which is not recommended, or use a battery switch to select one or the other. If you use two 6 V golf cart batteries you get more then twice the capacity, and you draw from and charge both of them at the same time.

They both act like one big battery, and they fit where two group 24 batteries would go.

My Trillium 4500 has room for two golf cart batteries and 33.5 lbs of propane. I have a forklift propane bottle. I could fit a 43.5 lb tank, if I required that much propane.
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Old 11-26-2014, 11:15 AM   #14
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Quote:
Originally Posted by David Tilston View Post
6 V golf cart batteries have the same foot print as a group 24 battery. They are however taller. If you add another 12 V battery to your trailer, you can either put them in parallel, which is not recommended, or use a battery switch to select one or the other. If you use two 6 V golf cart batteries you get more then twice the capacity, and you draw from and charge both of them at the same time.

They both act like one big battery, and they fit where two group 24 batteries would go.

My Trillium 4500 has room for two golf cart batteries and 33.5 lbs of propane. I have a forklift propane bottle. I could fit a 43.5 lb tank, if I required that much propane.
Please explain the rational for not connecting a two batteries in parallel.
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