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Grenna 
Newbie 
Joined: 30 Jul 2020 Location: Dallas Online Status: Offline Posts: 12 |
 Topic: Dometic Frig RM8501Posted: 14 Nov 2020 at 11:51am |
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Will my Dometic Frig RM8501 work on Battery power and power from my tow vehicle while towing?
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Grenna
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RoverPod
Senior Member 
Joined: 07 Mar 2020 Location: Virginia Online Status: Offline Posts: 118 |
Posted: 14 Nov 2020 at 1:05pm |
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Your refrigerator will work on battery power from your rPod's battery. Whether or not your rPod's battery gets charged from your tow vehicle while towing depends on your tow vehicle and how it is wired. What you are using to tow with?
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2017 F150 XLT SuperCab
2020 rPod 180 |
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Grenna
Newbie
Joined: 30 Jul 2020 Location: Dallas Online Status: Offline Posts: 12 |
Posted: 14 Nov 2020 at 1:36pm |
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2016 Nissan Frontier 6 cyc
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Grenna
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jato
Senior Member
Joined: 23 Feb 2012 Location: Kewadin, MI Online Status: Offline Posts: 3332 |
Posted: 14 Nov 2020 at 2:03pm |
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If you have a voltmeter or know someone who does go to the Bargman plug (7 pin connector) where you hook up the pigtail of the pod to. The spade connector at the 11:00 position is your 12 volt feed and the spade connector opposite that (5:00) is your ground. Hook up to those with your voltmeter. With your Nissan running you should read 13.7 volts. If not, you will have to get it checked out or wired so that you can power your refer while traveling. Many here just travel down the road with propane. Legal and safe in all 50 states. |
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God's pod
'11 model 177 '17 Ford F-150 4WD 3.5 Ecoboost Jim and Diane by beautiful Torch Lake "...and you will know the Truth and the Truth will set you free." |
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Grenna
Newbie
Joined: 30 Jul 2020 Location: Dallas Online Status: Offline Posts: 12 |
Posted: 14 Nov 2020 at 2:08pm |
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Propane then sounds like the way to go, thanks.
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Grenna
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StephenH
podders Helping podders - pHp
Joined: 29 Nov 2015 Location: Wake Forest, NC Online Status: Offline Posts: 6418 |
Posted: 14 Nov 2020 at 2:25pm |
I can do so now because I ran a separate power circuit with a battery isolateor in order to charge the LiFePO4 battery with a DC to DC charger. It provides enough power that I can now both charge the battery and run the refrigerator. I could not do that before. 2010 Nissan Frontier Crew Cab 4x4 LE
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StephenH
Happy is the man that findeth wisdom,... ouR escaPOD mods Former RPod 179 Current Cherokee Grey Wolf 24 JS |
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Pod People
Senior Member
Joined: 22 Sep 2011 Location: Chapel Hill,NC Online Status: Offline Posts: 1088 |
Posted: 14 Nov 2020 at 4:01pm |
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The fridge WILL run on battery power--but not for long! It is the least efficient way to operate. Most people use propane unless connected to shore power. Further, most tow vehicles will not be able to give a substantial charge to the pod while driving. It is totally acceptable and safe to use propane except in limited situations, like tunnels, ferries, and other enclosed places. Vann
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Vann & Laura 2015 RPod 179 
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mcarter
podders Helping podders - pHp
Joined: 07 Apr 2016 Location: Greenbrier, TN Online Status: Offline Posts: 3419 |
Posted: 14 Nov 2020 at 4:39pm |
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The vehicle charge system is designed to charge the vehicle battery. It can't independently charge an auxiliary battery and allow an overcharge of the vehicle. It's not set up that way. There is a 12volt source in the 7 pin. It does supply 12V to the TT, but it is not regulated by the TT battery it is regulated by the TV battery. They sell add on auxiliary battery charging systems, several companies make them (REDARC), they are not cheap. The bottom line is your TV is not designed to charge two different batteries, it charges the TV battery and supplies a 12V source thru the 7 pin.
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Mike Carter
2015 178 " I had the right to remain silent, I just didn't have the ability." |
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offgrid
Senior Member
Joined: 23 Jul 2018 Online Status: Offline Posts: 5290 |
Posted: 14 Nov 2020 at 5:26pm |
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I run my fridge on 12V while towing all the time. If you have adequate wire size running to the 7 way connector it should be fine. To maintain the rPod battery and run the fridge you will need 10 gauge or larger wire to keep the voltage drop low enough that the rpod battery doesn't get discharged. When you stop for the day you should change the fridge over to propane right away. Or, you can leave it on propane all the time except for a few bridge tunnels as others have noted.
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold |
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mcarter
podders Helping podders - pHp
Joined: 07 Apr 2016 Location: Greenbrier, TN Online Status: Offline Posts: 3419 |
Posted: 14 Nov 2020 at 5:43pm |
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I do the same as you OG. I don't expect the TV battery to keep the TT battery charged, when I arrive I have a deplenished TT battery. However it keeps the TT reefer powered. When I arrive I switch to propane or camp ground power.
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Mike Carter
2015 178 " I had the right to remain silent, I just didn't have the ability." |
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Dometic Frig RM8501