How long will an EcoFlow RIVER Pro run a chest freezer?
About 9.9 hours — 9 h 55 min typically, from 9 h 20 min in the worst case to 10 h 30 min at best. That assumes a chest freezer pulling 100 W for 40% of the time (average 40 W), plus the station's 10 W AC mains socket overhead — 50 W in total out of 496 usable watt-hours.
A full freezer holds its temperature for many hours unopened, so short outages cost less energy than the duty cycle suggests.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × chest freezer, UK 230 V | 50 W | 9 h 20 min | 9 h 55 min | 10 h 30 min |
| 2 × chest freezer, UK 230 V | 90 W | 5 h 11 min | 5 h 31 min | 5 h 50 min |
| 1 × chest freezer, US 120 V | 58 W | 8 h 2 min | 8 h 33 min | 9 h 3 min |
- 1.2 nights of eight hours, or 0.41 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 1,651 Wh of rated capacity — 2.3× this station.
- Start-up: the chest freezer asks for 600 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.
Amazon links are affiliate searches for a type of product, not endorsements of a model; the site may earn a commission at no extra cost to you.
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 runtime | Change |
|---|---|---|
| The pack is two years old | 9 h 7 min | -8% |
| The pack is five years old | 7 h 56 min | -20% |
| It is −10 °C outside | 7 h 56 min | -20% |
| You run it flat, no reserve | 11 h 1 min | +11% |
| You keep 20% back | 8 h 49 min | -11% |
If you need it to run longer
These run a chest freezer for at least twice as long as the EcoFlow RIVER Pro does, cheapest first.
| Station | Wh | Typical | Indicative price |
|---|---|---|---|
| Jackery Explorer 2000 v2 | 2,042 | 28 h | £849 / $999 |
| Bluetti AC180P | 1,440 | 20 h 8 min | £899 / $649 |
| OUKITEL P2001 Ultimate | 2,000 | 27 h 25 min | £999 / $1,099 |
| Bluetti AC240 | 1,536 | 20 h 40 min | £1,099 / $999 |
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
| Station | Wh | Typical | Weight | Indicative price |
|---|---|---|---|---|
| Bluetti EB70S | 716 | 10 h 25 min | 9.7 kg | £449 / $429 |
| UGREEN PowerRoam 600 | 680 | 10 h 5 min | 8.4 kg | £449 / $499 |
| Goal Zero Yeti 700 | 677 | 10 h 2 min | 9.2 kg | — / $700 |
| Jackery Explorer 600 Plus | 632 | 9 h 34 min | 7.3 kg | — |
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