What size power station for a mini fridge (compact refrigerator)?
It needs a station with at least 75 W of continuous output and a surge rating of at least 500 W to start it. At the default 85% efficiency it takes about 263 Wh of rated capacity for 8 hours of running, and 788 Wh for 24 hours of running. 53 of the 54 power stations in the Enough Watts data set can power it. The smallest one that keeps it going for 24 hours of running is the BLUETTI Elite 100 mini (1,005 Wh).
Updated
The short answer
75W
Continuous output
500W
Surge to start it
263Wh
Capacity for 8 hours of running
788Wh
Capacity for 24 hours of running
53 of 54
Stations that power it
Watts
Typical figures for this type, from the sources at the foot of this page. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.
- Running, typical
- 75 W
- Running, low to high
- 50 W to 100 W
- Starting
- 500 W400 W to 600 W, 6.7 times running
- Energy per day
- 0.67 kWh0.56 to 0.91 kWh; the compressor cycles on and off
- Typical use a day
- 24 hthe calculator starts from this, and you can change it
- Average draw while on
- 27.9 W
- Voltage
- 120 V
Explained in: Watts vs watt hours, explained, How to read an appliance label for watts, Starting watts explained and Can a power station run a refrigerator?.
The math
Worked with the typical figure, as the calculator does it.
- Output75 W running, so the station's continuous output must be at least 75 W.
- Surge500 W to start, so its surge rating must be at least 500 W.
- Average draw0.67 kWh a day × 1,000 ÷ 24 h = 27.9 W, because it cycles on and off.
- A typical day27.9 W × 24 h = 670 Wh a day.
- 8 hours of running27.9 W × 8 h = 223 Wh usable, ÷ 0.85 = 263 Wh of rated capacity.
- 24 hours of running27.9 W × 24 h = 670 Wh usable, ÷ 0.85 = 788 Wh of rated capacity.
- On the BLUETTI Elite 100 mini1,005 Wh × 0.85 = 854 Wh usable, ÷ 27.9 W = 30.6 h.
Stations that run it
Every power station in the data with this appliance alone plugged in, at 85% efficiency. Type the running watts from your own label and the table works it out again.
What moves the number
A compact fridge cycles like a full size one, so its daily energy sets the runtime: 0.67 kWh a day for a typical certified model, 0.56 to 0.91 kWh across them. Thermoelectric minis are a different, less efficient kind; see the thermoelectric cooler. Its start of about 500 W is modest.
Questions
How many watts does a mini fridge (compact refrigerator) use?
Can a portable power station run a mini fridge (compact refrigerator)?
How long will a power station run a mini fridge (compact refrigerator)?
Why does a mini fridge (compact refrigerator) need a high surge rating?
Sources
Researched from these pages, then checked against them a second time.
- Generator Wattage Chart: Common Appliances & Tools - Champion Power Equipment generator maker guide, checked
- ENERGY STAR Certified Residential Refrigerators (data.energystar.gov dataset p5st-her9) government, checked
We read published figures and do the math; we do not measure appliances. The methodology states every formula on this page. Capacities are rated watt hours: 1,000 Wh rated gives 850 Wh usable at the default.