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06-03-2018, 09:02 AM
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#21
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Montana Master
Join Date: Sep 2013
Location: Pensacola (mail forward service)
Posts: 3,198
M.O.C. #13740
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As stated, batteries in series adds the voltage and keeps the amp hr rating of the batteries the same. Batteries in parallel, keep the voltage the same but add the amp hr ratings of the batteries.
__________________
2012 F350 6.7 L dually, 2013 3800RE with 6 pt leveling, Sumitomo 17.5" load range h tires, Samsung 18 cu ft residential fridge, 8k Morryde I.S. with disc brakes. Full timing since 2012.
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06-06-2018, 01:12 PM
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#22
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Montana Master
Join Date: May 2003
Location: New Bern
Posts: 4,296
M.O.C. #311
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I have a Residential Refrigerator and am total depressed. I chose the residential because i thought it was more efficient and it is on 120 volt.
I found the refrigerator and inverter draw about 20 amp per hour from your battery. There for letting it run for 24 hours is about 480 amps. My two 12 volt batteries are rated at 110 amps each so 220 amps. The rule I have used is only drawing liquid batteries down by 50% to prevent damage to their life. Therefor 5 hours is max with no other items drawing amperage. That is not the case because there are other draws.
So I say NO you can not run it overnight to cool it down on battery.
I do have a battery monitor so my numbers are not guesses.
Best of luck and safe travels.
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06-06-2018, 01:52 PM
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#23
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Seasoned Camper
Join Date: Jan 2018
Location: Deming
Posts: 52
M.O.C. #21090
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Hey John.
I have Samsung RF197 since 2013 and run it on 4 6v D/C golf cart batteries I have sat in a Casino parking over night and had power in the am,but do have solar to em topped up on the road.
Den.
__________________
2006 Everest 344J Solar. 7K Axles.
SeeLevel II Gauges Samsung RF197 Fridge.
2015 Chevy C/C L/B 3500LTZ DRW.
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06-06-2018, 02:52 PM
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#24
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Established Member
Join Date: May 2018
Location: Auburndale
Posts: 28
M.O.C. #21715
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Works for us
We have a Samsung residential fridge on our 3721RL. I’m currently waiting on CW to replace the 1000w inverter because it won’t run the fridge for some reason. In the mean time I installed a 2000w Inverter and it runs the fridge just fine. A recent trip to Savannah (5 hours on the road) and when we got there the fridge was a chili 38 and the freezer was -2.
I will add that it cools down faster than the RV fridge in our old camper and we enjoy the built in ice maker to boot. So yes, we recommend a residential fridge, but we don’t dry camp at all.
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06-06-2018, 04:36 PM
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#25
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Montana Fan
Join Date: May 2017
Location: Coeur D Alene
Posts: 264
M.O.C. #19835
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On our way home from picking up our new 3791RD in Elkhart we overnighted at Walmart on two occasions. We had two golf cart batteries installed instead of the normal 12V as part of the deal. Our stays at Walmart were about 12hours each time. After running the residential refer at regular temperatures, using the LED lights as usual, water pump, etc. the batteries were at 3/4 charge in the morning.
__________________
2019 Montana 3791RD
2017 Ford F350 Lariat 6.7 PSD 4.10 DRW Crew LB
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06-06-2018, 05:27 PM
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#26
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Montana Fan
Join Date: Jun 2015
Location: owen sound
Posts: 491
M.O.C. #17566
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Try boon docking for a week with your residential fridge........ not going to happen without running a generator for hours to charge the battery's and pissing off your neighbors. That is why we ensured we had a standard gas/electric fridge. BTW touch wood it works awesome....
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06-06-2018, 05:27 PM
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#27
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Montana Fan
Join Date: Apr 2015
Location: Omaha
Posts: 258
M.O.C. #17319
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Thank you everybody for your honest and candid responses. We would have had to do a lot of camping to experience those results.
It sounds like 6V in series will run a lot longer than 12V in parallell. And that the convenience of residential for filtered cold drinking water is nice. And that electric is safer than gas when traveling down the road.
We've had very good luck with our 12 cu ft gas/electric so it's going to be a hard sell to make us change.
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06-06-2018, 05:54 PM
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#28
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Montana Master
Join Date: Oct 2017
Location: Bee Branch
Posts: 2,620
M.O.C. #20693
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Our new unit has the residential fridge. We are very happy with it. It has a lot more room, an icemaker and just seems to outperform an RV fridge in just about every way. We park our RV at our home and it is always plugged in so that isn't an issue for us and I cannot address the inverter power questions. I will however say that the residential fridge does stay cold much longer than an RV fridge proably due to better insulation and build quality.
One of the biggest advantages of residential fridge would be inexpensive replacement costs and ease of installation. It would also be much easier to find someone to work on it as any home appliance tech can work on them.
The one downside I see is if your the true boondocking type of camper. If you frequently park for extended periods of time in areas that do not have electricity then that will be an issue particularly if you don't have a generator.Folks that are serious about off the grid camping are going to want the RV dual fuel fridges...
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James & Irene Wilson
Bee Branch, AR.
2017 Ram 1 ton diesel duallyCrew Cab/Long Bed
2018 Montana High Country 381TH Garage Full of Toys
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06-06-2018, 07:07 PM
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#29
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Seasoned Camper
Join Date: Jan 2018
Location: Myrtle Beach
Posts: 81
M.O.C. #21038
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Our 375Fl has the residential refer.. we love it...more capacity, quicker cool down, Ice Cream is HARD..........
2 12v batteries, charge line from the truck.... arrive at campsite with fridge cold and batteries topped off...
Have not done any dry camping with this rig yet.....
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06-06-2018, 07:16 PM
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#30
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Montana Master
Join Date: May 2017
Location: South East NC
Posts: 1,768
M.O.C. #19865
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Love it ~ some had soft ice cream? Why as every RV fridge I've had certainly kept it hard. That is what the freezer does. Pushing paranoia of the world exploding driving with the fridge on. I've missed that pulling these things for 50 years. Manufactures tell you how great they are ~ because they are cheaper. Have not found a need for bigger than our 4 door 18 cu ft RV fridge yet. A little longer to get cooled down, not much if you add a little frozen water 1st. It is choice, but paranoia should not be a factor.
__________________
John & Patty
2022 3855 BR
2019 Lariat F350 4X4 Dually
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06-06-2018, 07:36 PM
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#31
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Montana Master
Join Date: Dec 2009
Location: Sebring
Posts: 3,669
M.O.C. #9969
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John, I would say there is something wrong with either your Fridge or the setup.
Ours draws 11 amps from the batteries when the compressor is running, but it's a very low duty cycle and only runs for a short period per hour as required. I did a test on ours when were first got it with the OEM two cheap 12V Batteries and without using power for anything else it ran for 36 Hours and Batteries we still at 12.6V
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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06-06-2018, 07:38 PM
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#32
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Montana Master
Join Date: Oct 2017
Location: Bee Branch
Posts: 2,620
M.O.C. #20693
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Quote:
Originally Posted by CaptnJohn
Love it ~ some had soft ice cream? Why as every RV fridge I've had certainly kept it hard. That is what the freezer does. Pushing paranoia of the world exploding driving with the fridge on. I've missed that pulling these things for 50 years. Manufactures tell you how great they are ~ because they are cheaper. Have not found a need for bigger than our 4 door 18 cu ft RV fridge yet. A little longer to get cooled down, not much if you add a little frozen water 1st. It is choice, but paranoia should not be a factor.
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I would say less expensive not cheaper. Like a lot of other things just personal preference. We don’t boondock and prefer the residential feels just like home
__________________
James & Irene Wilson
Bee Branch, AR.
2017 Ram 1 ton diesel duallyCrew Cab/Long Bed
2018 Montana High Country 381TH Garage Full of Toys
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06-06-2018, 08:05 PM
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#33
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Montana Fan
Join Date: Jan 2018
Location: Box Elder
Posts: 247
M.O.C. #21057
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Yes but the frig does not run full time If the doors are kept closed probably will not run over 20% of the time. My opinion only probably worth what you paid for it
__________________
2018 Montana High Country 331RL
2006 Ram 2500 SRW 4X4 Laramie Quad Cab 5 .9
Andersen Ultimate 20K Hitch Lippert Solid Steps Steady Fast stabilizes
Rex and Patsy
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06-07-2018, 04:41 AM
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#34
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New Member
Join Date: Sep 2017
Location: Daleville
Posts: 5
M.O.C. #20530
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We have two weeks until our Norcold rv fridge is removed and a residential fridge installed and I can not wait! We specifically traded the residential for the rv fridge when we ordered our Montana for all the reasons folks list on this site and we had never had and issue with them in the past. I have regretted that choice since we brought the rv home. Our first year of owning the rv that fridge was the irritation on every outing and Keystone and Norcold the irritation afterwards. The Montana spent more time at the dealership then with me over the fridge. I gave them virtually a blank check to fix it as I was beyond caring about the warranty by the end of the season and still couldn’t solve the issue as it failed again immediately. Even if I have to replace the he residential every few years it will be worth it to have a unit that works and can be quickly fixed or replaced when it breaks.
__________________
Deborah and Kevin
2017 3820FK with the front window-our pet friendly mobile hotel.
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06-07-2018, 08:19 AM
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#35
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Montana Fan
Join Date: Jun 2013
Location: Boise
Posts: 288
M.O.C. #13564
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We no have our first residential fridge after 40 years of owning an RV. I had very few problems with any of the gas/electric style but now that we are fulltiming I really enjoy the residential fridge. Boondocking is not typical although a night off grid now and then does occur while traveling long distance. With my background in fire service and conducting fire investigations for years I saw many fires resulting from failed RV fridges. This is just one more thing I now don't worry about.
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06-17-2018, 03:45 PM
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#36
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Montana Fan
Join Date: Jan 2016
Location: Lima
Posts: 138
M.O.C. #18168
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Residential Fridges
Yep .. works just fine in my 2000.
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07-15-2018, 04:47 PM
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#37
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Montana Fan
Join Date: Jun 2018
Location: Jacksonville
Posts: 384
M.O.C. #21993
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For me a residential is the way I will go with a 2019. We have to store ours on a downhill and cant cool down an RV refrig. until we pull it up on the street (not everyone's issue) and we don't boon-dock, not our life style so for us it makes since.
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02-26-2021, 01:33 PM
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#38
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New Member
Join Date: Dec 2020
Location: Gorham
Posts: 6
M.O.C. #27797
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Residential Fridge
Just purchased a 2021 3121RL in November with residential refrigerator. It is a GE, they finally figured out the samsung brand was junk. I will never go back to a gas/electric. They seem to be more expensive and prone to problems. I don't do much boon docking but when I do, I have a generator. The ice maker is great.
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02-26-2021, 03:53 PM
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#39
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Montana Master
Join Date: May 2017
Location: South East NC
Posts: 1,768
M.O.C. #19865
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Quote:
Originally Posted by Snowbirder
Just purchased a 2021 3121RL in November with residential refrigerator. It is a GE, they finally figured out the samsung brand was junk. I will never go back to a gas/electric. They seem to be more expensive and prone to problems. I don't do much boon docking but when I do, I have a generator. The ice maker is great.
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What is the model of your GE? Any problem with my Samsung and it's gone.
__________________
John & Patty
2022 3855 BR
2019 Lariat F350 4X4 Dually
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02-26-2021, 06:27 PM
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#40
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New Member
Join Date: Dec 2020
Location: Gorham
Posts: 6
M.O.C. #27797
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The model is GWE19J.
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