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Old 04-20-2014, 05:36 PM   #1
Join Date: Apr 2011
Posts: 68
What is Battery disconnect switch for?

Other than the obvious, what does it do besides disconnect the batteries from the converter.
I tried to search and found 722 hits, but none mention what it is for.

I use it to remove the batteries, but there has to be another reason.


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Old 04-20-2014, 05:45 PM   #2
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Stops battery drain when unit is in storage. Switch for house batts and one for chassis batts in a MH.

HR 29 fks TT, 1 slide, Chevy Silverado
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Old 04-20-2014, 05:45 PM   #3
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It kills all of your 12 volt power, so when you store your unit it won't drain your battery.
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Old 04-20-2014, 05:48 PM   #4
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It is to isolate batteries from any loads that would discharge the batteries during storage. The CO2 detector may still be connected on some RV's.
2002 Fleetwood Revolution 38B
2006 Honda CR-V Air Force One
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Old 04-20-2014, 06:39 PM   #5
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I don't think it stops power to the inverter in my RV and the inverter continues to draw power even though almost everything else is off.
Bob, Sandi & Marmaduke the Big Pug
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If towing: a 2006 Mini Cooper or 1995 Wrangler
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Old 04-20-2014, 07:50 PM   #6
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Originally Posted by 1ciderdog View Post
I don't think it stops power to the inverter in my RV and the inverter continues to draw power even though almost everything else is off.
Large inverters and inverter/chargers usually are NOT wired through the disconnect, because it is necessary to keep the cables large and as short as possible.
'97 Bounder 34V, F53 7.5L-460
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Old 04-21-2014, 07:43 AM   #7
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Thanks for all the responses. My Keystone owners manual is useless.

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battery, battery disconnect

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