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Old 10-26-2020, 08:54 PM   #1
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Storing RV inside

Looking for advice on storing RV inside unheated space. Can I leave all batteries hooked up in coach and plug into ac power for the winter without issues?
Can I adapt from 50amp plug to 20 amp just to have power for inverter charger to keep batteries charged?
Should I use a battery maintainer on chassis battery?
Should both disconnect switches be off inside coach?

Thanks in advance

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Old 10-26-2020, 08:56 PM   #2
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Storing RV inside

That is exactly what I do each winter, although the building is well insulated. I used a 20amp to 50 amp dog bone adapter.
You need to verify batteries will still charge with onboard charger if disconnects are turned off. Ours does not so battery disconnects are left on and inverter is turned off.
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Old 10-26-2020, 10:38 PM   #3
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You need to check where the 12V from the DC converter enters the circuit to the battery. Before or after the disconnect switch.

On the RV's I have had. If I turn off the battery disconnect and plug in to 120V AC, the battery will not charge, but I will have 12v in the coach from the converter.
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Old 10-26-2020, 11:18 PM   #4
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I leave mine plugged into 20 amp circuit with adapter all winter, I turn off inverter, leave battery switches and charger on, check battery water every 4 to 5 weeks.
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Old 10-27-2020, 06:21 AM   #5
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My rig is stored indoors in a unheated building. I disconnect the house batteries. Once a month, I start up the generator and run it with a load which also charges the house batteries. This system works well so far. It's also good that it forces me to check everything out while I'm there, as the storage location is about 5 minutes from our house.
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Old 10-27-2020, 09:02 AM   #6
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We store ours indoors and each month I go and start the engine and run it for 20min to charge the chassis battery. The house batteries are pulled and on a maintainers for the winter. My storage does not have power if it did I would be plugged in during the time in storage. This would keep the house and chassis batteries top up for the storage time.
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Old 10-27-2020, 09:58 AM   #7
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We store our rv in a barn with batteries master switch off.
We check it about once ever other week. When the battries need a charge we either start the engine or generator or both. Will run for about 20 minutes. The rv is in worse case is stored for 4 months.
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Old 10-27-2020, 11:30 AM   #8
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I store mine inside. Here in Western Washington we do drop below freezing, but rarely below the low 20's so we run an oil filled radiator and a incandescent trouble light in the water compartment in the Winter to keep it warm and protect the plumbing, because I keep water in the tanks. It is our backup home in cases of extended power outages, which we do have. I wired my building with a 50 amp rv outlet so I keep it plugged in. I also keep a battery maintainer on the chassis batteries and check battery water levels monthly.
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Old 10-27-2020, 03:12 PM   #9
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This really depends on your climate, advice that is good for Arkansas may not be good for North Dakota, I store mine in an uninsulated shed with power, but I am in south Louisiana where the temperature rarely gets into the 20's F, and the all time record low is only 12F. (which we tied a couple of years ago)
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Old 10-28-2020, 07:22 AM   #10
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For storage, make sure the batteries are fully charged , then disconnect them by removing the cables. The batteries will self discharge slightly , but will be good for at least 6 months in storage even in the coldest of climates. With the batteries disconnected, then is no need to worry about charger failures or adding water. When removing the coach from storage, just reconnect the batteries and plug in the charger to top them off.
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Old 10-28-2020, 09:26 PM   #11
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Quote:
Originally Posted by Soppy View Post
For storage, make sure the batteries are fully charged , then disconnect them by removing the cables. The batteries will self discharge slightly , but will be good for at least 6 months in storage even in the coldest of climates. With the batteries disconnected, then is no need to worry about charger failures or adding water. When removing the coach from storage, just reconnect the batteries and plug in the charger to top them off.

+2, with the exception I monitor the voltage. A key thing to do is monitor the SOC and not let it drop below 50%. The 50% SOC voltage is a moving target with temperature. I have decided to use a voltage of 12.1V as my recharge point.
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