I have a Sprinter TT with the Samsung Fridge. I installed 2 Group 29 batteries and I don't have any problems with 24hrs. I haven't tested it past that so I don't know. A lot depends on the temp in the camper. To turn the unit off you have to throw the breaker and turn the inverter off or it will still run.
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2016 Sprinter 299 ret with a 2003 Duramax powered Suburban and getting paid to travel the country.
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