RV fridge DC Operation

Discussion in 'Refrigerators and Coolers' started by ve3tiz, Jul 3, 2020.

  1. ve3tiz

    ve3tiz Member

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    So after a few days of monitoring progress on propane I decided to shut that power source off and switch to D.C. I do have a pair of newer Deka 6 volt golf cart batteries with 190A and according to the specs on my little fridge it draws 10A on DC so... we'll see if (a) it holds temp and (b) how long before the batteries start to lose power. Theoretically I should be good for 9 hours. We're still in the middle of a heat wave (highs ranging from 90-95) so taking that into consideration as well.
     
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  2. Sjm9911

    Sjm9911 Well-Known Member

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    Dc is not a good choice for the fridge, except when towing it.
     
  3. ve3tiz

    ve3tiz Member

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    That seems to be the case from what I've seen the last couple hours!
     
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  4. Anthony Hitchings

    Anthony Hitchings Well-Known Member

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    If its a Dometic 2193 or equal, the problem is that on 12VDC its on 100% of the time - no temperature regulation. Which drives up power consumption.
     
  5. ve3tiz

    ve3tiz Member

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    Yes, I noticed that. And in spite of it being 100% on all the time, I could tell right away it wasn't even holding temp as well. So I switched back to propane. Just thought I would experiment.
     
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  6. Sjm9911

    Sjm9911 Well-Known Member

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    Propane is best, then 120 volts. 12 volt if your towing. But i used to load the fridge up with frozen stuff or ice blocks if i had room in it. Then its spectacular :D
     
  7. Raycfe

    Raycfe Waterford Ct.

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    Just to add ....... 12 VDC when towing if your tow vehicle has a working "charge" line.
     
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  8. Eric Webber

    Eric Webber Active Member

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    I get less battery draw on my fridge using the 120v setting (through inverter) than on the 12v - and thats despite the efficiency losses due to power conversion.

    I still use propane for my fridge because I want power for other things, but I have enough solar and battery that I can stay in 120v setting indefinitely while parked in my driveway and not using much other power

    when camping, I like to know I can use the air conditioner for an hour or two per day, plus my coffee machine and induction burner. Can’t do all that and run the fridge
     
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  9. WrkrBee

    WrkrBee Well-Known Member

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    I like it when people try different systems and post their real world experience. That means I don't have to.
     
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