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Old 06-03-2018, 09:02 AM   #21
jcurtis934
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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.
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Old 06-06-2018, 01:12 PM   #22
H. John Kohl
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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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Old 06-06-2018, 01:52 PM   #23
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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.
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Old 06-06-2018, 02:52 PM   #24
Wayner197
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Works for us

We have a Samsung residential fridge on our 3721RL. Iím currently waiting on CW to replace the 1000w inverter because it wonít 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 donít dry camp at all.
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Old 06-06-2018, 04:36 PM   #25
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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.
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Old 06-06-2018, 05:27 PM   #26
speedster100
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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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Old 06-06-2018, 05:27 PM   #27
whutfles
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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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Old 06-06-2018, 05:54 PM   #28
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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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Old 06-06-2018, 07:07 PM   #29
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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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Old 06-06-2018, 07:16 PM   #30
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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.
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Old 06-06-2018, 07:36 PM   #31
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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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Old 06-06-2018, 07:38 PM   #32
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Quote:
Originally Posted by CaptnJohn View Post
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.
I would say less expensive not cheaper. Like a lot of other things just personal preference. We donít boondock and prefer the residential feels just like home
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Old 06-06-2018, 08:05 PM   #33
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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
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Old 06-07-2018, 04:41 AM   #34
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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 couldnít 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.
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Old 06-07-2018, 08:19 AM   #35
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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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Old 06-17-2018, 03:45 PM   #36
Justme44
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Residential Fridges

Yep .. works just fine in my 2000.
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Old 07-15-2018, 04:47 PM   #37
GreG L.
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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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