Battery, do I need one if plugged into electricty? - Fiberglass RV


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Old 05-31-2011, 11:18 PM   #1
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Battery, do I need one if plugged into electricty?

I have a Scamp - If I want to run the furnace, fridge, or the bathroom pumps do I need a battery if I am plugged into electricity? I know some lights run off battery only, but what about the other stuff.
My battery died and I am wondering if I really need to buy one if plugged into electricity?
Thanks in advance for any insite you may have.
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Old 06-01-2011, 12:14 AM   #2
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There are only two electrical systems in Scamp trailers. One the 120 volt system that runs the converter, maybe a light, and maybe the fridge. The battery or converter supply power to the 12 volt system. There are no lights that run off the battery only unless somebody has mess with the wiring.
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Old 06-01-2011, 01:57 AM   #3
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Hi Karalyn,

You can operate the electrical system with the battery removed, but you should make sure the positive battery cable cannot touch anything conductive, which might cause sparks and a fire. You can check the positive cable with a test lamp or voltmeter while the trailer is plugged into shore power. If it is hot, thoroughly wrap the positive cable with vinyl electrical tape to prevent any sparks.
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Old 06-01-2011, 02:02 AM   #4
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There is the case of the electric brakes breakaway switch not working without an onboard battery...
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Old 06-01-2011, 09:54 AM   #5
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I have heard it is hard on you converter? Not sure if its true or not.
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Old 06-01-2011, 11:09 AM   #6
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Byron, are you sure about that?
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Old 06-01-2011, 01:45 PM   #7
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Scamp wiring diagram
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Old 06-01-2011, 03:31 PM   #8
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The converter will try very hard to charge the non-existent battery. It will keep pushing it's maximum DC voltage nowhere. I'd recommend disconnecting the converter if you aren't going to have a battery. But then you won't have the water pumps either.

I'd strongly recommend that you have a battery for the bathroom water pumps and to make life easier for your converter. Is the trailer wired to get 12 volts from the TV? Do you have electric brakes on the trailer?

You could go with a marine/rv group 24 battery since you are not planning to need it for extended stays.
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Old 06-01-2011, 09:06 PM   #9
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Thanks everyone. You have talked me into getting a replacement battery. Better to be safe than sorry.
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Old 06-05-2011, 06:22 PM   #10
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Karalyn,

We had to replace our battery too. L&M Fleet has group 27 Deep Cycle Battery on sale for $56.75. 27DC-5 SKU #1270039. (all prices with exchange)

You need to check the size of your battery box. We had a 27 in our Scamp already. You may not have that large of a box and need a 24.

Too bad, we got ours before the sale. Sale ends June 11.

Nancy
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Old 06-21-2012, 07:13 AM   #11
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We have a 1989 16ft Scamp Deluxe-we are just now starting to experiment with using the battery. It seems a few lights will operate, but thats it. Any suggestions on troubleshooting--we are wanting to be able to operate our electric water pump and maybe an outlet for a fan.
Gene & Sue
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Old 06-21-2012, 07:54 AM   #12
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Looks like you have an answer in the other post you made with the same question.
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Old 06-21-2012, 03:22 PM   #13
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i'll tell you from my perspective having just spent a week dry camping with my fridge running on propane my battery kept me in lights and occasional use of my fan for the week and only on the last day was it pooped out. and that was after running the fridge on 12 volt for 8 hours.
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Old 06-21-2012, 06:41 PM   #14
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Quote:
Originally Posted by Susanm34
We have a 1989 16ft Scamp Deluxe-we are just now starting to experiment with using the battery. It seems a few lights will operate, but thats it. Any suggestions on troubleshooting--we are wanting to be able to operate our electric water pump and maybe an outlet for a fan.
Gene & Sue
Illinois
Something doesnt sound right. On my Scamp everything including the water pump runs off the battery except the one long kitchen light.
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