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path1
Explorer
Oct 09, 2018

Fridge/freezer amount of 12 volt?

What does the average amount of 12 volt a fridge/freezer would use in 24 hour period. Norcold 621 in 60 or 70 degree weather? Maybe opening door 5 or 6 times?

17 Replies

  • Too funny - replies from "almost nothing" to 15 amps a day. :S
  • It will draw about 15AH a day. When the gas burner is lit, that draws 0.5 amps, and it is lit about 2/3 of the day, so say 16 hours at 0.5 = 8AH. Meanwhile there will be a 0.3a draw all the time, so 24 x 0.3 = 7.2AH, total 15.2AH.

    My 861 pulled about 17AH a day (Trimetric monitor for the measurements)
  • path1 wrote:
    What does the average amount of 12 volt a fridge/freezer would use in 24 hour period. Norcold 621 in 60 or 70 degree weather? Maybe opening door 5 or 6 times?


    8-9 amp hours in a 24 hour period.
  • path1 wrote:
    What does the average amount of 12 volt a fridge/freezer would use in 24 hour period. Norcold 621 in 60 or 70 degree weather? Maybe opening door 5 or 6 times?


    Presumably your Norcold 621 is a 2-way DSI fridge which means it doesn't use any DC power for actual cooling - it's either running in GAS mode or 120 vac. When running in gas mode it still requires 12 vdc to power the circuit board, operate the gas solenoid, the interior light, and of course the moisture control heater but doesn't use any 12 vdc power for actual cooling. If you're asking because you want to dry camp, don't have shore power available, and therefore want to preserve your battery reserve as much as possible you ought to be primarily concerned about that power pig "moisture control heater" - turn it off OR if it can't be turned off disconnect it.
  • Refrigerator (LP Gas Mode) 1.5- 2 Amps

    I got this off a chart I found. With nothing else running very much, you might get 2.5 - 3 days running your fridge from a single battery.