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02-28-2021, 05:08 PM
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#1
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Registered User
Join Date: Feb 2020
Posts: 42
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Battery Switches on or off for Storage?
I'm sure that this question has been asked here a million times, but here goes one million and one...
I have a 2001 Monaco Windsor. It is plugged into 110v for winter storage. Should my 2 battery switches be left in the on or off position for winter storage?
Thanks
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02-28-2021, 05:33 PM
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#2
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Senior Member
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 34,183
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Turning them off , kind of negates the, 120 volt power supply , because it may result in no charge reaching the batteries .
Does your coach charge both battery banks from shore power ?
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
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02-28-2021, 05:52 PM
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#3
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 16,197
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I always left mine plugged in and left the switches on. Just have to make sure the 120 volt circuit stays on, if not your house batteries will deplete very quickly, and the chassis over time.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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02-28-2021, 06:20 PM
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#4
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Registered User
Join Date: Feb 2020
Posts: 42
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I've had mine in the 'on' position all winter to 120v. I start the Motorhome about once a month and let it run for approx 30 minutes...
We just has an extremely unusual cold spell here last week. -13 one night with a high that day of 4 degrees.
Today I tried to start it and it wouldn't start with just the chassis batteries. I had to use the 'aux start' switch to combine the chassis and house batteries to get it to start.
Once In got it started, I let it run for 1 hour. Immediately after I turned it off, I tried to start it. Once again, I had to use the 'aux start'...
I hope that the Chassis batteries aren't shot.
Quote:
Originally Posted by jacwjames
I always left mine plugged in and left the switches on. Just have to make sure the 120 volt circuit stays on, if not your house batteries will deplete very quickly, and the chassis over time.
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02-28-2021, 08:53 PM
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#5
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Senior Member
Join Date: Jun 2012
Location: NorCal
Posts: 3,004
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If plugged in I leave switches on.
__________________
Outbound
2002 Monaco Executive 500 ISM
2004 GMC 2500HD 4X4
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03-01-2021, 08:56 AM
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#6
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 16,197
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Batteries have a defined life, how old is your battery.
Flooded batteries have to be checked frequently to make sure the water level is high enough. If for some reason it was discharged beyond 50% it will shorten the life. The more times this happens the shorter the life.
I've had to replace my chassis battery twice, the first time in 2012, I believe it was original. The second time ~2 years later, no clue as to why it failed so quickly. Current battery is gong on 7 years old.
__________________
Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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03-01-2021, 04:32 PM
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#8
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Senior Member
Damon Owners Club Freightliner Owners Club
Join Date: Feb 2019
Location: Minnesnowta
Posts: 502
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Depends
Some coaches will still charge the batteries with the disconnect switch on and some won't. It depends on how they are wired. Just check the batteries with a multi-meter with the switch on to see what you have. If your chassis batteries are not getting charged (less than 13v) then move the switch to the other position and test again. If still not charging, you may need to add a battery tender to your chassis batteries. Some coaches aren't wired to charge both banks.
Most folks (like myself) will just leave the batteries connected when plugged in since they are getting charged anyway no worries about depleting them.
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03-01-2021, 04:54 PM
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#9
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Senior Member/RVM #90
Monaco Owners Club
Join Date: Nov 2002
Location: Columbus, MS
Posts: 56,012
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Leave the switches on as long as you're connected to shore power! 
__________________
Joe & Annette
Sometimes I sits and thinks, sometimes I just sits.....
2002 Monaco Windsor 40PBT, 2013 Honda CRV AWD
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03-01-2021, 08:00 PM
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#10
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Senior Member
Join Date: Oct 2016
Posts: 1,835
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Hi TRCSOONER; If your 2001 Windsor is like my 2001 Windsor you do not need to have the battery disconnect switches in the on position when plugged into shore power for both sets of batteries to be changing off the inverter. Talked to a Monaco tech years ago and was surprised to find the system designed this way. This is why you have to be careful when working on the electrical system thinking if I turn the battery disconnects to off and still plugged into shore power you can have charging current going to the batteries. Use a Volt Meter to confirm if batteries are being charged. Make sure you battery maintainer has the green light on to show both sets of batteries are being charged. I should add that it is totally up to you what position to leave the battery disconnect switch's in. I have my coach plugged into shore power and I leave my battery disconnect switches in the on position.
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