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11-13-2022, 03:40 PM
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#1
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Junior Member
Join Date: Jan 2022
Location: Tulsa
Posts: 10
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Connect to shore power over winter?
I've been reading through several recent threads about power/battery issues and haven't seen this exact question covered. This is my first winter season with our new Greyhawk 29mv and I have 120v power available and inside storage. Can I connect to the power and not have to disconnect the batteries? Or it seems I read that this could over-charge the house batteries. And from what I've been reading, connecting to shore power would not prevent the chassis battery from potentially discharging over several months so it should be disconnected? Or go do a maintenance engine exercise every month to maintain the battery? Interested to hear what others do over winter.
Thanks in advance, Richard.
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11-13-2022, 04:05 PM
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#2
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Senior Member
Join Date: Mar 2017
Location: North Texas
Posts: 3,591
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I leave mine plugged in and I use a small charger\maintainer for the chassis battery. I have never encountered any issues in doing this. ~CA
__________________
2010 GreyHawk 31SS
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11-13-2022, 06:12 PM
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#3
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Senior Member
Join Date: Dec 2018
Location: Owens Cross Roads
Posts: 3,222
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Ours stays connected to shore power but is outside. If it sits for a month the generator is cranked and run with a load for one hour. Engine is cranked and run till it gets to operating temperature.
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11-13-2022, 06:30 PM
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#4
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Senior Member
Join Date: Sep 2019
Location: SOUTH BELOIT
Posts: 876
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Quote:
Originally Posted by RVandTenter
I've been reading through several recent threads about power/battery issues and haven't seen this exact question covered. This is my first winter season with our new Greyhawk 29mv and I have 120v power available and inside storage. Can I connect to the power and not have to disconnect the batteries? Or it seems I read that this could over-charge the house batteries. And from what I've been reading, connecting to shore power would not prevent the chassis battery from potentially discharging over several months so it should be disconnected? Or go do a maintenance engine exercise every month to maintain the battery? Interested to hear what others do over winter.
Thanks in advance, Richard.
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When I had my 2019 29xk I would plug it in every 2 to 3 weeks for a day to charge the battery. I bought a charger that maintains the chassis battery and desulfates it. My 2021 Thor has a solar panel and it keeps all the batteries charged with the disconnect switch off, it's nice not needing the maintainer for the chassis battery
__________________
2021 Thor Ace 33.1
2019 Jayco 29xk (ex-motorhome)
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11-13-2022, 08:59 PM
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#5
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Senior Member
Join Date: Apr 2017
Location: Inland Empire, California
Posts: 2,005
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Solar keeps my house batteries charged and I put a trickle charger on the chassis battery. In your case there should be no problem as your converter should be the newer style that tapers its voltage to various levels. Just remember to check the water levels now and then.
As far as the chassis battery is concerned, many new rigs come with a bi-directional relay that will charge the chassis battery from the house battery charging system. If you put a voltmeter on the chassis battery when the unit is plugged in and it shows 13 volts or more, it is being charged. Problem solved.
I wouldn't waste the gas using the large engine as a battery charger. Trickle charging is much cheaper.
__________________
Jim
Retired electronic technician (45 years in the field)
2017 Greyhawk 29W (solar & many other mods)
wife (maybe I should have given her top billing)
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11-14-2022, 08:14 AM
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#6
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Senior Member
Join Date: Sep 2019
Location: SOUTH BELOIT
Posts: 876
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Quote:
Originally Posted by JimD
Solar keeps my house batteries charged and I put a trickle charger on the chassis battery. In your case there should be no problem as your converter should be the newer style that tapers its voltage to various levels. Just remember to check the water levels now and then.
As far as the chassis battery is concerned, many new rigs come with a bi-directional relay that will charge the chassis battery from the house battery charging system. If you put a voltmeter on the chassis battery when the unit is plugged in and it shows 13 volts or more, it is being charged. Problem solved.
I wouldn't waste the gas using the large engine as a battery charger. Trickle charging is much cheaper.
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And it's better for the battery
__________________
2021 Thor Ace 33.1
2019 Jayco 29xk (ex-motorhome)
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11-14-2022, 08:38 PM
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#7
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Senior Member
Join Date: May 2022
Location: CLOVIS
Posts: 293
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Quote:
Originally Posted by RPR
... the generator is cranked and run with a load ...
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Might I ask what you use to create the load? The only thing I can think of that could run for an hour is the A/C. In the winter? For an hour?
ther
__________________
1997 Eagle 222.
2006 Mazda MX-5 Toad.
2016 Nissan Quest. For hauling the grandkids.
Main purpose of Jayco is for camping at racetracks.
I am a volunteer corner worker for Sports Car Club of America.
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11-14-2022, 08:55 PM
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#8
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Senior Member
Join Date: Dec 2018
Location: Owens Cross Roads
Posts: 3,222
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Here in Alabama even in the winter there are days where it is not a problem. Run AC a little. Heat up hot chocolate in the microwave.
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11-15-2022, 10:40 AM
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#9
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Senior Member
Join Date: Apr 2020
Location: Shrewsbury
Posts: 349
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Quote:
Originally Posted by SmokeyBear
Might I ask what you use to create the load? The only thing I can think of that could run for an hour is the A/C. In the winter? For an hour?
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During the summer I run the A/C and during the winter I run a small electric ceramic heater. Either one draws about 13 amps. The converter will add another few amps, depending on what charge mode I put it into.
__________________
retired USCG aviator
2020 Jayco Greyhawk 29MV/2021 MINI Cooper toad
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11-15-2022, 01:54 PM
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#10
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Junior Member
Join Date: Jan 2022
Location: Tulsa
Posts: 10
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Thanks for all the input. I'll hook up to shore and check the chassis battery with the voltmeter to see if it's receiving some charge. unfortunately the indoor storage is 20 miles away so I can't just pop outside and check on everything.
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11-15-2022, 02:52 PM
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#11
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Senior Member
Join Date: May 2012
Location: Minnesota
Posts: 9,780
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It is fine to be plugged in. If you have the OEM batteries they tend to be wet cells. You should check the fluid levels periodically. If the fluid level needs to be at minimum above the cells and below the bottom of the caps. If you need to add fluid, only use DISTILLED water, no other type of water.
The chassis battery is not connected to the coach wiring to keep it charged. So you might want to add a small battery maintainer or disconnect the battery.
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11-15-2022, 05:04 PM
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#12
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Senior Member
Join Date: Sep 2019
Location: SOUTH BELOIT
Posts: 876
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Quote:
Originally Posted by SmokeyBear
Might I ask what you use to create the load? The only thing I can think of that could run for an hour is the A/C. In the winter? For an hour?
ther
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I have 2 electric heaters I use when it's cold and running the generator
__________________
2021 Thor Ace 33.1
2019 Jayco 29xk (ex-motorhome)
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11-26-2022, 01:37 PM
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#13
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Senior Member
Join Date: Dec 2017
Location: Jasonville
Posts: 150
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I installed a Trik-L-Start product on my Redhawk to keep my engine battery charged while plugged in. They are inexpensive and easy to install and work as advertised. You can just plug in your motorhome and forget it. All batteries will be fully charged.
__________________
2018 Redhawk 29xk
Work as much as needed but as little as possible
Enjoy the little things in life
#Love4Layla
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11-26-2022, 02:45 PM
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#14
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Senior Member
Join Date: Sep 2019
Location: SOUTH BELOIT
Posts: 876
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Quote:
Originally Posted by Raines
I installed a Trik-L-Start product on my Redhawk to keep my engine battery charged while plugged in. They are inexpensive and easy to install and work as advertised. You can just plug in your motorhome and forget it. All batteries will be fully charged.
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Looks like a great product
__________________
2021 Thor Ace 33.1
2019 Jayco 29xk (ex-motorhome)
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11-27-2022, 07:36 PM
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#15
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Junior Member
Join Date: Nov 2022
Location: St paul
Posts: 2
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I’m new here with an older Jayco Designer that I just bought. We’re in the process of upgrading it for travel at the moment. We live in Minnesota so obviously very cold weather. Our RV is now parked next to the garage, so outside with a cover on it. My thinking is to start the chassis motor once a week and let it warm up to temp and at the same time plug in shore power until my batteries are topped off. That way the truck motor and tranny fluids are warmed up and circulated and the house batteries get charged. I would unplug the shore once batteries were sufficiently charged without risking over charging them. I’m new to this so let me know if I’m wrong or there’s a better way..
Thanx..
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11-30-2022, 01:59 PM
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#16
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Junior Member
Join Date: Feb 2018
Location: Gig Harbor
Posts: 13
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I plug in my chassis battery maintainer to one of the three 12vdc outlets in the cab area of my Alante 26ay and plug in the maintainer power cord into the 120vac receptacle in the right seat console. The maintainer sits on the floor in front of the right seat. I also plug in a digital volt meter to one of the other 12vdc outlets in the dash area so that I can always check the chassis battery voltage. It normally reads 12.6 volts.
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11-30-2022, 02:14 PM
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#17
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Senior Member
Join Date: Sep 2018
Location: hyde park
Posts: 721
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connect to shore power/winter
our class c sits in our driveway when not on the road plugged in 24/7. use trickle charger on chassis batt. no issues since new 4 yrs ago. will use multi meter to check chassis batt. this week and report back. our class c is a 2019 Jayco 22j
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11-30-2022, 02:46 PM
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#18
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Site Team
Join Date: Apr 2012
Location: Newark, NY
Posts: 15,917
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Quote:
Originally Posted by Spurr76
I’m new here with an older Jayco Designer that I just bought. We’re in the process of upgrading it for travel at the moment. We live in Minnesota so obviously very cold weather. Our RV is now parked next to the garage, so outside with a cover on it. My thinking is to start the chassis motor once a week and let it warm up to temp and at the same time plug in shore power until my batteries are topped off. That way the truck motor and tranny fluids are warmed up and circulated and the house batteries get charged. I would unplug the shore once batteries were sufficiently charged without risking over charging them. I’m new to this so let me know if I’m wrong or there’s a better way..
Thanx..
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I'm for keeping the batteries charged up, but perhaps using a battery maintainer or two would be better. Even removing them and storing them in a warmer atmosphere like the basement, with maintainers attached.
The reason is that for the engine and transmission to get to full temperature you'd have to actually drive it for a minimum of 16 miles or longer, depending on the outside temperature. The colder it is, the longer it takes. Another consideration is the condensation generated in the exhaust system won't dry out, so water will collect inside, and can cause premature corrosion. I used to start a previous motorcycle once a month for the same reason, and it cost me a new, and expensive set of mufflers. Just my experience.
__________________
Moderator
Think you're too old to cry or swear out loud...walk into your hitch in the dark.
2012 Jay Flight 19RD
2016 Ford F150 XLT 2X4 SC 3.5L Eco Max Tow
2010 Tundra TRD DBL Cab (Traded)
2 new fluffy Corgis, Bayley and Stanley
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11-30-2022, 03:00 PM
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#19
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Member
Join Date: Oct 2020
Location: western NY
Posts: 81
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Winter Storage
I store our 2021 Greyhawk 29 MVP in my barn plugged in for the winter with the Battery switch turned off and a trickle charger on the chassis battery. The house battery charges from the converter even if the battery switch is off. I run the generator every other month for about 1/2 hour under load of an electric heater. This works great.
__________________
Mike & Lizzy
2021 Greyhawk Prestige 29MVP
Retired Army CW4
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12-01-2022, 07:21 PM
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#20
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Member
Join Date: Apr 2020
Location: rochester
Posts: 79
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iI have a Melbourne an I connect 2 battery maintainers, one for coach and one for
chassis. I have a 7 day timer and run the maintainers for about 3.5 hours per night. This will not over charge or cause the water in the batteries to dry out. It has worked very well over the past seasons.
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