How Long Will It Run

How long will an EcoFlow RIVER Pro run an under-counter fridge?

About 14 hours — 13 h 58 min typically, from 13 h 8 min in the worst case to 14 h 47 min at best. That assumes an under-counter fridge pulling 85 W for 30% of the time (average 26 W), plus the station's 10 W AC mains socket overhead — 36 W in total out of 496 usable watt-hours.

A small sealed box cycles less than a fridge-freezer because there is no freezer compartment to hold below −18 °C.

The numbers

EcoFlow RIVER Pro · 720 Wh · new pack at 20 °C, 10% reserve
SetupAverage drawCautiousTypicalBest case
1 × under-counter fridge, UK 230 V36 W13 h 8 min13 h 58 min14 h 47 min
2 × under-counter fridge, UK 230 V61 W7 h 39 min8 h 8 min8 h 36 min
1 × under-counter fridge, US 120 V40 W11 h 40 min12 h 23 min13 h 7 min
  • 1.8 nights of eight hours, or 0.58 days of continuous running.
  • Usable energy: 496 Wh of the 720 Wh on the box, after chemistry, inverter losses and the reserve.
  • To keep it going for a full 24 hours you would need about 1,172 Wh of rated capacity — 1.6× this station.
  • Start-up: the under-counter fridge asks for 500 W at switch-on against this station's 1,200 W peak — comfortable.

Buy the EcoFlow RIVER Pro

Where to buy

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If this is for a power cut

If the power goes and the battery is not there, the food still has hours if the doors stay shut. These cheap things tell you whether it stayed cold enough and keep the doors closed.

Fridge and freezer thermometers. The only way to know whether the food stayed cold enough, rather than guessing from the clock.

Look for: One for each appliance, readable without opening the door for long.

Cool box and ice packs. Move what you need for the day into a cool box so the fridge and freezer stay shut, and keep ice packs frozen in the freezer as extra cold.

Look for: A hard box big enough for a day of food, and flat ice packs that fill the gaps in the freezer.

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More: How long a freezer stays frozen in a power cut, and the power cut essentials list (US edition).

What changes the answer

If instead…Typical runtimeChange
The pack is two years old12 h 51 min-8%
The pack is five years old11 h 10 min-20%
It is −10 °C outside11 h 10 min-20%
You run it flat, no reserve15 h 31 min+11%
You keep 20% back12 h 25 min-11%

If you need it to run longer

These run an under-counter fridge for at least twice as long as the EcoFlow RIVER Pro does, cheapest first.

StationWhTypicalIndicative price
Jackery Explorer 2000 v22,04238 h 33 min£849 / $999
OUKITEL P2001 Ultimate2,00037 h 45 min£999 / $1,099
Bluetti AC2401,53628 h 16 min£1,099 / $999
OUKITEL BP20002,04838 h 40 min£1,099 / $1,199

The cheapest step up: Jackery Explorer 2000 v2

Amazon and approved-programme links are affiliate links; the site may earn a commission at no extra cost to you. Links marked “official site” are untracked. Prices and stock change constantly — check before you buy.

Smaller options that still work

StationWhTypicalWeightIndicative price
Bluetti EB70S71614 h 40 min9.7 kg£449 / $429
UGREEN PowerRoam 60068014 h 19 min8.4 kg£449 / $499
Goal Zero Yeti 70067714 h 16 min9.2 kg— / $700
Jackery Explorer 600 Plus63213 h 43 min7.3 kg—