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Your fridge does not run on battery - it runs on either propane or 110v AC. On AUTO, If you are plugged in to shore power, it will go to AC ; if not plugged in - to propane. Electricity is the default setting.
If you set the fridge to AUTO, it will operate on propane - if the propane is ON - while you are traveling.
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2008 Cougar 5th Wheel 27RKS
2005 2500 GMC Duramax 
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