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How long will a 12 volt fridge run on battery?

How long will a 12 Volt refrigerator run on battery?

  • A 12 volt fridge freezer will run between 25 and 50 hours on a 100 Ah (amp hour), LiFEP04 (Lithium Iron Phosphate) battery
  • If you’re using a Lead Acid battery, you can only discharge to about 50% without causing damage and shortening battery life, so with Lead Acid batteries, you’ll get about half that run time, or 12 to 25 hours.

Several factors impact 12 volt refrigerator run time

While it would be nice to give a simple answer, the question of How long will a 12 Volt refrigerator run on battery is not simple.

There are several factors impacting How long a 12 Volt fridge will run on a battery.

  • Size of battery (Ah)
  • Battery Chemistry
    • Lead Acid
    • Lithium Iron Phosphate or LiFEP04
    • Lithium Ion as in a solar generator
  • The operating Amps of the Fridge compressor motor
  • Fridge volume in liters or quarts
  • Thermostat setting (below 32°F to 36°F +/-)
  • Ambient outdoor temperature or room temperature
  • How often the 12v fridge door is opened and for how long

Vansage 12 volt refrigerator How long will a 12v fridge run on battery?

12v compressor fridge, battery chemistry and run time

The size of your Campervan RV Battery (aka house battery) will be a primary factor in determining how long a 12 Volt Refrigerator will run.

Using the estimates from the table in our post that answers the question, How much power does a 12 volt fridge use?, lets assume you’ve got 100 Ah (amp hours) of campervan battery power.

ChemistryLiFEP0450 Ah100 Ah200 Ah300 Ah
Fridge Run Time12 to 25 hours25 to 50 hours50 to 100 hours75 to 150 hours
ChemistryLithium Ion
Fridge Run Time12 to 25 hours25 to 50 hours50 to 100 hours75 to 150 hours
ChemistryLead Acid
Fridge Run Time6 to 12 hours12 to 25 hours25 to 50 hours37 to 75 hours

 

We’ve reviewed 12 Volt fridges, including details about the best 12v Campervan Refrigerator

Learn about the best 12 Volt Fridge Freezers for Campervans currently available like the best 12v fridges from Dometic, Iceco, Costway, Edgestar, ARB and more.

You can find that article at: 12 Volt Refrigerator Freezers for Efficient, Safe Campervan Food Storage

More questions about 12 Volt Refrigeration answered

Thanks for reading. Please comment below with any 12v Campervan refrigerator questions or experiences you’d like to share.

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