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Refrigeration load

What it takes to run a 12V portable fridge on battery power

This page keeps the planning defaults visible so you can replace them with measurements from your own appliance.

Running load
45 W
Representative compressor draw for a 40 to 50 litre portable unit.
Starting load
120 W
A labelled planning default. Startup is the usual reason a station with plenty of energy still shuts down.
Duty cycle
35%
Share of each hour the appliance actually draws its running load.

Our answer

A portable compressor fridge is usually best powered from a compatible direct-current output, with ambient heat and low-voltage protection shaping the real energy use.

What an outage actually looks like with this load

A portable fridge is designed around mobile power, but its surroundings can be harsher than a kitchen. A closed vehicle, direct sun, restricted ventilation, or warm food can keep the compressor busy. Direct-current operation avoids keeping the station’s inverter awake and removes an unnecessary conversion step. Cable condition and socket fit matter because a poor connection can cause voltage drop or nuisance shutdown. Give the vents space, pre-cool when grid power is available, and watch cabinet temperature in the actual travel environment.

The mistake people make sizing it

People often use the alternating-current adapter out of habit, even when the fridge and station offer compatible direct-current connections. That can spend extra energy in conversion and inverter overhead. Confirm the required connector, polarity, and supported input range from the manufacturer before changing cables. Then measure a trip-like day, since a cool indoor test will understate what the fridge may need in a hot vehicle.

What each current record does with this load

A runtime appears only after the electrical fit clears. The comparison checks voltage, continuous output, and startup demand before it calculates stored-energy runtime. If a station fails a gate, the table leaves runtime out instead of presenting a number you cannot use.

Estimated runtime for a 12V portable fridge on each current power station record
Power stationCapacityContinuous outputEstimated runtime
EcoFlow RIVER 3 Plus286 Wh600 W14 hours, unverified
Anker SOLIX C300288 Wh300 W14 hours, unverified
Goal Zero Yeti 300296.96 Wh350 W14 hours, unverified
BLUETTI AC50B448 Wh700 W22 hours, unverified
Goal Zero Yeti 500499.2 Wh500 W24 hours, unverified
DJI Power 500512 Wh1,000 W25 hours, unverified
Goal Zero Yeti 700677.37 Wh600 W33 hours, unverified
EcoFlow RIVER 2 Pro768 Wh800 W37 hours, unverified
BLUETTI AC70768 Wh1,000 W37 hours, unverified
EcoFlow DELTA 3 Plus1,024 Wh1,800 W50 hours, unverified
BLUETTI Elite 100 V21,024 Wh1,800 W50 hours, unverified
Anker SOLIX C1000 Gen 21,024 Wh2,000 W50 hours, unverified
DJI Power 10001,024 Wh2,200 W50 hours, unverified
Anker SOLIX C10001,056 Wh1,800 W51 hours, unverified
Jackery Explorer 1000 v21,070 Wh1,500 W52 hours, unverified
BLUETTI AC1801,152 Wh1,800 W56 hours, unverified
Goal Zero Yeti 15001,505.28 Wh2,000 W73 hours, unverified
Jackery Explorer 2000 v22,042 Wh2,200 W99 hours, unverified
Jackery Explorer 2000 Plus2,042.8 Wh3,000 W99 hours, unverified
EcoFlow DELTA 3 Max Plus2,048 Wh3,000 W99 hours, unverified
DJI Power 20002,048 Wh3,000 W99 hours, unverified
Anker SOLIX C2000 Gen 22,048 Wh2,400 W99 hours, unverified
BLUETTI Elite 200 V22,073.6 Wh2,600 W100 hours, unverified
Anker SOLIX F30003,072 Wh3,600 W148 hours, unverified
Anker SOLIX F38003,840 Wh6,000 W185 hours, unverified
Goal Zero Yeti PRO 40003,993.6 Wh3,600 W193 hours, unverified
EcoFlow DELTA Pro 34,096 Wh4,000 W198 hours, unverified
Jackery Explorer 5000 Plus5,040 Wh7,200 W243 hours, unverified

A station showing no runtime failed voltage, continuous output, or startup demand. An unverified figure means one requirement could not be checked against published evidence.

What moves this number most

Running this fridge from the DC socket instead of the inverter is usually worth 10 to 15 percent more runtime, because the station never has to convert to AC and back.

How to measure your own

Check the rated current on the fridge label, then run it for 24 hours in the conditions you actually expect and read the station's own DC output meter.

Put the measured figure into the runtime calculator rather than relying on a default. When this load shares a battery with others, the outage load planner sizes the whole set together.

Questions that change the decision

Is direct-current power always the better connection?

It is usually the more efficient path when the station output, cable, connector, polarity, and fridge input are all compatible. It also avoids leaving the alternating-current inverter active solely for the fridge. Compatibility comes first, however. Use the manufacturer’s cable or an approved equivalent, and do not improvise a connector based only on whether it physically fits.

Why does the fridge stop when the station still shows charge?

The fridge may be responding to low voltage at its own input rather than to the station’s remaining energy estimate. A long, thin, loose, or warm cable can create enough voltage drop to trigger protection. Check the plug seating, cable specification, socket current limit, and the fridge’s protection setting as described by its manufacturer before blaming battery capacity.

What conditions should I use for a realistic test?

Test with the fridge packed as you expect, set to the intended temperature, and placed where it will actually operate. Ventilation and ambient heat can dominate the result. Starting with warm contents is a different task from maintaining pre-cooled food, so decide which case the outage plan must cover and measure that case rather than an easy indoor substitute.

Continue through this cluster

Use the next page that answers your unresolved constraint

Evidence used on this page

Important fields are tied to a specific source. Manufacturer claims, government guidance, calculations, and planning assumptions remain separate.

  1. Defines the capacity, efficiency, reserve, duty-cycle, voltage, continuous-output, and startup checks applied across the site. Planning defaults are visible on every page that uses them.

    planning assumption