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Runtime calculation

How Long Will a Goal Zero Yeti PRO 4000 Run a Refrigerator

This estimate separates electrical compatibility from battery endurance. Published specifications control where they exist, and every planning default is labelled where the manufacturer leaves a gap.

Research by the Power Station Station Editorial Team

Estimated runtime
61 hours
From 3,993.6Wh rated capacity against a 51.5W average load.
Continuous output
3,600 W
What the inverter can sustain. Output decides whether the appliance runs at all.
Published peak
7,200 W
Manufacturer surge figure, used only for the startup check.

Our answer

On our planning profile the Goal Zero Yeti PRO 4000 runs a household refrigerator for about 61 hours, or 49 hours if you keep a reserve back.

The checks behind this answer

Stored energy is the final check, not the first. Voltage, continuous output, and startup demand must clear before runtime means anything. Missing published evidence stays marked unverified instead of being treated as a pass.

Electrical checks applied to this station and appliance pairing
CheckResultWhy
VoltageClearsA household refrigerator runs on 120V and the Goal Zero Yeti PRO 4000 supplies 120V AC.
Continuous outputClearsA 150W running load sits inside the 3,600W continuous rating, leaving about 2300% headroom.
Startup demandClearsThe 1,200W start is covered by continuous output alone, so no surge rating is needed.

How the number is built

A battery holds back some of its rated capacity, and converting to household AC costs more on top. Of the 3,993.6Wh rated here, roughly 3,163Wh reaches the outlet under a conservative planning model.

That energy meets an average load of 51.5W, which applies a 33% duty cycle to a 150W running draw. Holding back a 20% reserve for battery age, cold, and a longer outage leaves 49 hours. These are calculations, not measurements from a test.

Before you rely on this

These limits decide whether this appliance belongs on a portable battery at all.

  • A closed refrigerator keeps food safe for about four hours without power. Backup power can extend that, but the temperature still needs checking.

Replace our assumptions with your own

Room temperature, how often the door opens, how full the refrigerator is, the age of the door seals, and whether an automatic defrost cycle falls inside the outage all move the daily energy figure more than the model name does.

Read the nameplate or data label for voltage and rated amps or watts, then run the appliance through a normal cycle on a plug-in energy meter for 24 hours. Use the measured watt-hours in the calculator instead of the default on this page.

Continue through this cluster

Use the next page that answers your unresolved constraint

Everything a Goal Zero Yeti PRO 4000 can runCompare this answer against the other loads the same station covers.Household refrigerator power requirementsWork through the load itself before choosing hardware for it.Goal Zero Yeti PRO 4000 specifications and sourcesSee where every number on this page came from.All Goal Zero recordsCompare the rest of the range.Runtime calculatorReplace our planning defaults with your own measurements.

Evidence used on this page

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

  1. Published specification table covering capacity, chemistry, lifecycles, inverter output, both solar input channels with their voltage and current limits, weight, and warranty.

    official product page

  2. Model-level annual energy use and product attributes. It supports the energy figures used here. It does not validate any startup or surge preset.

    government data

  3. Supports the four-hour closed-refrigerator and 48-hour full-freezer guidance.

    government guidance

  4. 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

  5. Published specification table: inverter output and waveform, every DC and USB port with its rating, the solar input window and current limit, AC charge input, and expansion.

    official product page