Have solar and propane fridge currently. Looking at a new MH with a residential fridge. It comes with a battery and small dedicated system. Can anyone tell me from experience how long this will allow you to operate off the grid.before needing to run the generator?? Just looking but............. Appreciate any personal experience. Thanks

Look at the EPA sticker for the fridge, it should list kilowatt usage per day or per year. If it's per year, divide by 365 to get per day.Taking the kw/day figure, divide by 12 to get the number of 12-volt amps the system will use in a day. Compare that figure to the amp-hour rating of the battery for the "dedicated system".For example if the fridge is rated at 2 kw per day, 2000 / 12 is 166 amps per day (on a 12v system). Divide more to get amp-hours 166 / 24 = 7 amp-hours Now lets say you have a modest battery system of 500 amp-hour total capacity. YOu can never use the total capacity, most folks use less than half, so 250 / 7 = 35 hours or a day and a half.This is all rough math, there's a lot of variables that can change the numbers but for all intents, it's an accurate ball-park.energy star for a 17 cu foot domestic

Real world experience - have the residential fridge, 2000W inverter, 4x6-volt batteries. We spend time at the races dry camping. Run the generator a couple of hours each day and it keeps the battery fully charged. We have run the Fridge for 2 days without any charging of the batteries while we were dry camping. Planning on adding some solar in the next year or two to keep it topped off so we don't need to run the generator as much. We have also tested running the fridge in the yard for up to 4 days and it was still running - but this didn't involve any lights, pump, or anything else but the inverter and fridge.

I asked a sales person that very question at the RV show in Louisville, KY this year. He said about 24 hours.I would imagine that would vary by several hours depending on the outside temps, how often the fridge was opened and what was in it.

Add about 500 watts of solar to the roof and the problem goes away. Solar is cheap nowadays and is a small fraction of the purchase price. In bad weather or long term low amounts of sun the generator will look after things if you run it a couple of times per day for an hour. You will love the residential refrigerator.

Living in Florida, we had lots of storms and lightning, and thus lots of power outages. A residential refrigerator will last about 24 hours if you don't open the doors. Of course, that was in a a hot house (90 degrees or more) because there also was no A/C. We also have a residential refrigerator in our camper. It easily goes 12 hours. I don't how much further, because we never went longer than that without power.

Residential fridge and boondocking | Good Sam Community

GordonThree
Explorer
Feb 28, 2014
Look at the EPA sticker for the fridge, it should list kilowatt usage per day or per year. If it's per year, divide by 365 to get per day.

Taking the kw/day figure, divide by 12 to get the number of 12-volt amps the system will use in a day. Compare that figure to the amp-hour rating of the battery for the "dedicated system".

For example if the fridge is rated at 2 kw per day, 2000 / 12 is 166 amps per day (on a 12v system). Divide more to get amp-hours 166 / 24 = 7 amp-hours

Now lets say you have a modest battery system of 500 amp-hour total capacity. YOu can never use the total capacity, most folks use less than half, so 250 / 7 = 35 hours or a day and a half.

This is all rough math, there's a lot of variables that can change the numbers but for all intents, it's an accurate ball-park.

energy star for a 17 cu foot domestic

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