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Old 10-01-2013, 08:49 PM   #1
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Battery problems

Hey folks,

I need some help. I replaced 2-type 24 batteries with 2-type 27 marine/rv batteries. With these new type 27 batteries, I blew my refridgerator fuse (15 amp) and several light bulbs blew when left on too long. Am i not able to switch from type 24 to type 27 batteries or do i need specifically type 27 RV batteries?

I have a 2006 Forest River 27 foot bunkhouse model.

Thanks for the help/info.
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Old 10-01-2013, 08:54 PM   #2
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Battery voltage is independent of battery size.
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Old 10-01-2013, 08:56 PM   #3
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thanks for the quick response. So what do you believe is causing my fuse and light bulbs to blow so quickly?
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Old 10-01-2013, 09:47 PM   #4
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Verify the voltage within the trailer. Is the voltage correct? Are you hooked up to shore power when the fuses blow?
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Old 10-01-2013, 09:59 PM   #5
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Is it possible you connected these incorrectly? 12 volt batteries connected in parallel are positive to positive, negative to negative.
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Old 10-01-2013, 10:35 PM   #6
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Quote:
Originally Posted by Triguy View Post
Is it possible you connected these incorrectly? 12 volt batteries connected in parallel are positive to positive, negative to negative.
Yes - it does sound like maybe a connection issue. One other thing to check - make sure the positive and negative wires from the trailer aren't reversed. Different manufacturers have different systems, but on our old camper the positive wire was black, which is the opposite of typical house wiring. Reversing those will blow fuses.

Not admitting how I know that!
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Old 10-01-2013, 10:36 PM   #7
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rbneron and triguy,

thanks for the info. To rbneron, I was only hooked up to battery. To triguy, from your response, i hooked my batteries up wrong. i had the batteries hooked up in series with main line going to pos, the connector going from the neg to pos, and then the other main line going to neg.
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Old 10-01-2013, 10:38 PM   #8
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KMP44,

thanks for the reply and info. I have a 2006 Forest River 27 foot bunkhouse model. the main lines are red and white.
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Old 10-01-2013, 10:43 PM   #9
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If the batteries are hooked up incorrectly you could be putting 24 volts into your TT system and this can do a lot of damage, double check as Triguy stated above. Unhook the battery until you are sure it is connected properly again as Triguy stated.
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Old 10-01-2013, 10:44 PM   #10
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I'm glad to hear you found the issue and solved it
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