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Old 10-10-2015, 12:44 PM   #1
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MH storage help

Hi all, we stored our MH at a RV park for winter a month ago. We periodically start the motor and Generator. This past day after about 2-3 weeks we went to the coach and tried to start. No luck. Completely no batteries. I had the house battery switch off and chassis battery switch on. I started the generator (took a while but started). I then realized that we do have access to 50 amp power (it is a campground site). I connected the MH and after few minutes it started and the batteries were fully charged.
Here is my question: should I leave the chassis battery switch on or off? I assume (and have always done) the house should be off.


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Old 10-10-2015, 01:39 PM   #2
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There are choices,
First, if you have access to power, leave it plugged in with both switches turned on just as if you were living in it. Check the battery electrolyte levels every 6-8 weeks to make sure they don't go dry. This is your best and simplest option.

Or, if you are not plugged in, you should disconnect both sets of batteries. Best way to do this in my opinion, is to install an isolator switch on the Negative terminal so you can connect and disconnect easily. The OEM switches when turned off still allow some parasitic load and thus the batteries will run down over a few days.
Note, if the batteries were dead, it will take more than a couple hours to bring them back to full charge. Also, each time they are discharged, the service life is reduced. Full charge could take 8-10 hours.

http://www.amazon.com/Post-Battery-M...connect+switch
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Old 10-10-2015, 05:54 PM   #3
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If it's plugged in, leave all your batteries turned on.
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Old 10-13-2015, 08:21 PM   #4
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Dennis45, thanks. The park is charging additional $5 per day if I elect to connect the electricity, so I decided against it.
So per your recommendation I have turned both house and chassis battery switches off. I dont know where the main chassis battery is to install the devise you have recommended.


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Old 12-01-2015, 06:52 PM   #5
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Please help
We have our MH stored at a site at a campground. Periodically I go to check on it and connect the electricity (50amp), start the engine and also start the generator for about 15-20 minutes. I then disconnect (if we keep connecting they will charge us $5 per day) the power, and turn the chaise and house switch to off.
Am I hurting things more?


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Old 12-01-2015, 07:26 PM   #6
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No need to start engine unless you're going to drive it. Just start generator and run it under a load for a while, 20--30 minutes.


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Old 12-01-2015, 07:28 PM   #7
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Nxkharra,
You indeed are doing more harm than good. Pay the freaking $5 for one day a month. Connect to shore power and leave it on for one day then go back the next day and unhook the shore power. Disconnect the negative battery cables whenever you're not on shore power. Do not run your engine or generator at all. Running either for less than an hour is bad for both engines and generator internals.

BTW, your signature says you're a full time. This apparently is no longer the case.

Edit:
Another BTW. $5 a day for electric is robbery. Ask the CG how much for 20 amp. That would easily keep your batteries charged up.
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Old 12-01-2015, 09:09 PM   #8
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A diesel engine should not be started unless you have time to drive it for at least 20 minutes. A diesel engine will never reach normal operating temperature while idling, and will cause oil contamination from unburned fuel and moisture condensation; per Cummins Engine co.

The genset however should be operated at 1/2 or more load for 2 hrs per month according to Onan.(that's in your owners manual)
If the monthly genset run does not keep the batteries charged while the main disconnect switch is off, I would opt for the manual battery disconnect suggested previously or only plug into the 15A outlet, which should be included in the lot rent.
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Old 12-02-2015, 02:20 PM   #9
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Probably ought to "just crack" the vent valve on the propane tank so it can empty out completely. That way, if the batteries explode, they won't ignite the paint on the propane tank, causing it to explode too.
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Old 12-03-2015, 07:09 AM   #10
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What is this latest comment for?? I don't get it.


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Old 12-03-2015, 07:38 AM   #11
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I don't get it either. Maybe an attempt at humor.
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Old 12-03-2015, 02:42 PM   #12
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You guys that are starting the motor and running it for 20-30 minutes are doing more harm than good. In cold weather, you cannot get the motor up to operating temps even at fast idle. To do any good, you have to drive the coach and get everything up to operating temperature
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Old 12-03-2015, 07:01 PM   #13
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Even a gas car can't get everything up to temp in the winter just idling. Mass stated if you can't drive the RV on the streets you are doing more harm then good.

$5 a day seems like a ripoff for just electricity. How much do you pay monthly to park the RV there? Do they offer a discount price if you keep it pluged in all winter and just use 15-20a service?

I paid $100 a month indoor with electricity
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Old 12-03-2015, 07:28 PM   #14
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Quote:
Originally Posted by NC25T View Post
Even a gas car can't get everything up to temp in the winter just idling. Mass stated if you can't drive the RV on the streets you are doing more harm then good.

$5 a day seems like a ripoff for just electricity. How much do you pay monthly to park the RV there? Do they offer a discount price if you keep it pluged in all winter and just use 15-20a service?

I paid $100 a month indoor with electricity

I do as my manual states for my 2012 Ford Chassis. Ford believes is smart to start the gas engine.

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