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Should I Shut Off My RV's House Batteries When My RV Is Hooked Up To Electric?

by Fred
(Belfair, WA)

Should I Shut Off My RV's House Batteries When My RV Is Hooked Up To Electric?

Should I Shut Off My RV's House Batteries When My RV Is Hooked Up To Electric?

Should I Shut Off My RV's House Batteries When My RV Is Hooked Up To Electric?
Should I Shut Off My RV's House Batteries When My RV Is Hooked Up To Electric?

Hi, I was once told that when I have my RV connected to 110 that I should have my battery switches turned off. Is it ok to keep the battery switches turned on while plugged in to household power?...many thanks,

Fred

ANSWER: Greetings Fred thanks for submitting your question on our Ask An RV Question Page.


I am not sure why someone told you to shut off your house batteries when your RV is plugged into electric. When your RV is plugged into electric, your RV's Converter takes over the job of supplying 12 Volt DC electric to your RV, basically bypassing the house batteries on your RV. This also holds true when you are running the generator on your RV.

You also need to realize that when your RV is plugged into electric the converter also starts to charge your house batteries. The only step I would recommend when you are constantly hooked up to electric is check the electrolyte levels in your house batteries at least once a month. Depending on the type of battery charging system your converter has there is a possibility that your batteries can be boiled out by the charger.

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When you check your batteries monthly you should use Distilled Water (not tap water) to top off the batteries. Aside from the routine maintenance I mentioned above I see no reason to shut off your house batteries, unless your RV is unoccupied and in long-term storage.

I hope that this information has been helpful to you.

Do you have any suggestions or comments on this topic? You can add them to this page by clicking on the "Click Here To Post Comments" link located near the bottom of this page.

Happy RVing

RVing Al

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by: Anonymous

I had that question and I called the dealership where we purchased the RV. I was going to plug in and run our ac because my TT was going to be a guest house for a few days. My husband had previously had a knife switch installed to disconnect the batteries more easily when we weren't going to be traveling for a while.

He was out of the country on business so I couldn't ask him. The man at the dealership told me that, yes, I needed to have the batteries connected or I would, most likely burn up the converter, a very expensive thing to replace. I am so glad we have the knife switch now. I sure didn't understand it when my DH decided to do it. Much easier to disconnect and reconnect the batteries now.

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