What size power station to run a freezer?

Refrigeration Also called: deep freezer, freezer, upright freezer

Two numbers decide whether a power station runs a chest freezer, and readers arrive using them interchangeably. Watts are the ceiling on what the inverter can hold at any instant — this load needs 30 W of them while it runs, and 156 W for the moment it starts. Watt-hours are how much energy the battery holds, and this load gets through about 616 Wh in a day. A machine can have plenty of one and not enough of the other.

Of the 26 machines in our library, 26 run it, 0 are a tight fit and 0 are out of reach. Each of those is a calculation against that machine’s continuous output, its surge ceiling and its inverter waveform — not a lookup table — and the reasoning is on every row.

The three numbers a power station is judged against

Running power 30 W 30–34 W Official spec · verified 2026-08-01 · low confidence

Start-up surge 5.2× running power engine checks 156 W Official spec · verified 2026-08-01 · low confidence

Duty cycle 85% Official spec · verified 2026-08-01 · low confidence

The band is the spread across real models in this class, not a tolerance. Size against the top of it unless you know which unit you own.

Start-up figure: Category envelope — not a manufacturer figure

Measured duration 200 ms · Official spec · verified 2026-08-01 · medium confidence

Two ways to read a duty cycle

A duty cycle can be read two ways and they are not the same number. One is the constant a test procedure assumes so that a label figure is reproducible; the other is what the machine does in a real room, which depends on the weather, the door and the thermostat. This record keeps both ends: 50% to 100%, with the default above.

officialverified 2026-08-01appliance record

What actually decides it

A motor load: the first half-second decides it

An induction motor with a stationary rotor is close to a short circuit. For the fraction of a second before it turns, it pulls several times its running current, and that peak — not the running figure — is what trips an inverter. This is why a machine drawing well under a station’s continuous rating can still fail to start on it, and why the start-up figure at the top of this page matters more than the running one.

What kind of motor is inside

It is a reciprocating (piston) compressor, which has to start against whatever refrigerant pressure is left in the system. That is why the restart right after a power cut is harder than a start from cold, and why a station that ran it all night can still stumble on the next cycle.

How long the start-up actually lasts

The inrush lasts a couple of tenths of a second, which is the window a station’s surge rating is written for. This is the one case where the surge figure and the surge ceiling are directly comparable.

Which power stations run it

Every row is a live calculation against that machine's continuous output, surge ceiling and inverter waveform. Of 26 machines, 26 run it, 0 are a tight fit and 0 are out of reach. The percentage is this load as a share of that machine's continuous output; anything past 82% drops out of the green. Rows are ordered by verdict, then by price — cheapest first inside each band.

EcoFlow RIVER 3 Plus EcoFlow · US 120 V 600 W continuous · 1,200 W surge ceiling 5.0%

BLUETTI Elite 30 V2 BLUETTI · US 120 V 600 W continuous 5.0%

7.1 h — on a full charge, with the station’s own 9.0 W idle draw in the denominator BLUETTI publishes no surge rating for this model. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. $299 · checked 2026-08-01 Show the working →

Jackery Explorer 300 Plus Jackery · US 120 V 300 W continuous · 600 W surge ceiling 10%

26 Wh per hour — averaged over this load’s duty cycle No runtime in hours: Jackery publishes no depth of discharge or inverter efficiency for this model, so there is no defensible usable-capacity figure to divide. $299.99 · checked 2026-08-01 Show the working →

BLUETTI Elite 100 V2 BLUETTI · US 120 V 1,800 W continuous · 3,600 W surge ceiling 1.7%

23 h — on a full charge, with the station’s own 10 W idle draw in the denominator $499 · checked 2026-08-01 Show the working →

Jackery Explorer 1000 v2 Jackery · US 120 V 1,500 W continuous · 3,000 W surge ceiling 2.0%

EcoFlow DELTA 3 Plus EcoFlow · US 120 V 1,800 W continuous · 3,600 W surge ceiling 1.7%

Jackery Explorer 2000 Plus Jackery · US 120 V 3,000 W continuous · 6,000 W surge ceiling 1.0%

EcoFlow DELTA 2 Max EcoFlow · US 120 V 2,400 W continuous · 4,800 W surge ceiling 1.3%

Jackery Explorer 1000 Plus Jackery · US 120 V 2,000 W continuous · 4,000 W surge ceiling 1.5%

BLUETTI Elite 200 V2 BLUETTI · US 120 V 2,600 W continuous 1.2%

45 h — on a full charge, with the station’s own 10 W idle draw in the denominator BLUETTI publishes no surge rating for this model. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. $1,099 · checked 2026-08-01 Show the working →

EcoFlow STREAM Ultra EcoFlow · US 120 V 800 W continuous 3.8%

26 Wh per hour — averaged over this load’s duty cycle No runtime in hours: EcoFlow publishes no depth of discharge or inverter efficiency for this model, so there is no defensible usable-capacity figure to divide. EcoFlow publishes no surge rating for this model. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. $1,279 · checked 2026-08-01 Show the working →

EcoFlow DELTA Pro 3 EcoFlow · US 120 V 4,000 W continuous · 8,000 W surge ceiling 0.8%

Anker SOLIX C300 Anker SOLIX · EU 230 V 300 W continuous · 600 W surge ceiling 10%

BLUETTI Elite 30 V2 BLUETTI · EU 230 V 600 W continuous 5.0%

Jackery Explorer 300 Plus Jackery · EU 230 V 300 W continuous · 600 W surge ceiling 10%

EcoFlow RIVER 3 Plus EcoFlow · EU 230 V 600 W continuous · 1,200 W surge ceiling 5.0%

EcoFlow STREAM Ultra EcoFlow · EU 1,200 W continuous 2.5%

BLUETTI Elite 100 V2 BLUETTI · EU 230 V 1,800 W continuous 1.7%

23 h — on a full charge, with the station’s own 10 W idle draw in the denominator BLUETTI publishes no surge rating for this model. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €699 · checked 2026-08-01 Show the working →

Jackery Explorer 1000 v2 Jackery · EU 230 V 1,500 W continuous · 3,000 W surge ceiling 2.0%

EcoFlow DELTA 3 Plus EcoFlow · EU 230 V 1,800 W continuous · 3,600 W surge ceiling 1.7%

Anker SOLIX Solarbank 3 E2700 Pro Anker SOLIX · EU 1,200 W continuous 2.5%

26 Wh per hour — averaged over this load’s duty cycle No runtime in hours: Anker SOLIX publishes no depth of discharge or inverter efficiency for this model, so there is no defensible usable-capacity figure to divide. Anker SOLIX publishes no surge rating for this model. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €999 · checked 2026-08-01 Show the working →

Jackery Explorer 1000 Plus Jackery · EU 230 V 2,000 W continuous · 4,000 W surge ceiling 1.5%

EcoFlow DELTA 2 Max EcoFlow · EU 230 V 2,400 W continuous · 4,800 W surge ceiling 1.3%

BLUETTI Elite 200 V2 BLUETTI · EU 230 V 2,600 W continuous 1.2%

46 h — on a full charge, with the station’s own 13 W idle draw in the denominator BLUETTI publishes no surge rating for this model. The start-up check runs against its continuous output as a conservative floor, which is ours, not a manufacturer specification. €1,299 · checked 2026-08-01 Show the working →

Jackery Explorer 2000 Plus Jackery · EU 230 V 3,000 W continuous · 6,000 W surge ceiling 1.0%

EcoFlow DELTA Pro 3 EcoFlow · EU 230 V 4,000 W continuous · 8,000 W surge ceiling 0.8%

Our pick for this load

EcoFlow RIVER 3 Plus · US 120 V

The cheapest US 120 V machine in the list that runs a chest freezer outright, and it holds it at 26 Wh per hour.

$259 · price checked 2026-08-01

The buy link is in the bar at the bottom of the screen — one action per page, and it goes to the merchant we last checked the price at.

What changes the numbers

At 32.2 °C ambient ×1 Applied to how OFTEN it runs, not to how hard it pulls while running. The verdict does not move; the energy it costs you over a day does. Official spec

Mains standards on record US 120 V The figures above are recorded per mains standard, because the same appliance class is built differently on 120 V and 230 V. Where only one standard is on record, the ranking still lists machines from both regions — each row states its own.

Everything else we hold on this load

Each figure carries the tier it came from and the date it was checked. Sizing guidance is kept apart from measured draw on purpose: one says what the machine pulls, the other says what a manufacturer or a standard thinks you should buy for it.

Measured and published draw

Standby draw 0 W Official spec · verified 2026-08-01 · low confidence

Energy per year 225 kWh Official spec · verified 2026-08-01 · high confidence

Published on the US FTC EnergyGuide label.

Energy per day 616 Wh Official spec · verified 2026-08-01 · medium confidence

Published on the US FTC EnergyGuide label.

Sizing guidance — not a draw figure

Usable energy for a full day 685 Wh Official spec · verified 2026-08-01 · medium confidence

Where to go next

From the Knowledge channel

A chest freezer has a guide of its own: the same records this page computes from, worked through in prose with room for the reasoning a table can only summarise — How many watts does a refrigerator actually use in a day?

Questions people ask about this load

How many watts does a chest freezer use?

30 W while it is running, and 30–34 W across the models in this class, with 156 W demanded at the instant it starts. Those are different questions and most pages answer only the first. The running figure decides whether a machine can hold it; the start-up figure decides whether it can get it going at all, and it is usually the one that fails. No manufacturer we checked publishes an inrush figure for this class, so the multiple this site uses is a category envelope drawn from standards tables.

What size power station do I need for a chest freezer?

For a chest freezer, the EcoFlow RIVER 3 Plus (US 120 V) is the cheapest machine in our library that runs it, at 600 W continuous · 1,200 W surge ceiling and $259 against a running draw of 30 W and a start-up demand of 156 W. That is a verdict computed from this load’s running watts, its start-up demand and the inverter waveform — not a rule of thumb about doubling the wattage. 26 of 26 machines clear it, 0 are a tight fit, and the tight ones are tight for reasons the list states individually.

How long will a power station run a chest freezer?

It depends entirely on the machine, which is the part most pages skip. Against 30 W of running draw, our figures put the BLUETTI Elite 30 V2 at about 7.1 h, and the BLUETTI Elite 100 V2 at about 23 h. Those hours come from usable-capacity figures derived from the manufacturers’ own published depth of discharge and inverter efficiency, with each machine’s idle draw in the denominator — not from dividing a nameplate watt-hour number by a label wattage. Most machines in the list carry no hours at all: their brands publish nothing that makes a usable-capacity figure defensible, so those rows give an energy rate instead of a number we would have had to invent.

Why does a chest freezer need so much more power to start?

No manufacturer we checked publishes an inrush figure for this class, so the multiple this site uses is a category envelope drawn from standards tables. It is deliberately conservative, it is not a measurement of any particular unit, and its confidence is capped accordingly. A verdict held back by this number may well be fine in practice — we will not say so until a manufacturer does. The engine works the check against 156 W, which is what a station's surge ceiling has to cover for the moment the machine starts. A station whose continuous rating is comfortably above the running figure can still refuse the start, and that is the single most common way a purchase goes wrong for this class.

Which power stations run a chest freezer?

26 of the 26 we hold, listed above cheapest-first within each verdict band, starting with the EcoFlow RIVER 3 Plus. 0 more are a tight fit on a chest freezer — they run it, but with less headroom than we are willing to call comfortable — and 0 cannot. Every one of those is a live calculation against that machine's own record, and opening a row shows the working.