How long will an EcoFlow RIVER Pro run a medication fridge (insulin)?
About 21 hours — 21 h 5 min typically, from 19 h 51 min in the worst case to 22 h 20 min at best. That assumes a medication fridge (insulin) pulling 45 W for 30% of the time (average 14 W), plus the station's 10 W AC mains socket overhead — 24 W in total out of 496 usable watt-hours.
Note how much of that draw is the station rather than the appliance: 43% of the energy goes on keeping the inverter awake. On a load this small, the idle draw matters more than the capacity does.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × medication fridge (insulin), UK 230 V | 24 W | 19 h 51 min | 21 h 5 min | 22 h 20 min |
| 2 × medication fridge (insulin), UK 230 V | 37 W | 12 h 37 min | 13 h 24 min | 14 h 11 min |
| 1 × medication fridge (insulin), US 120 V | 24 W | 19 h 51 min | 21 h 5 min | 22 h 20 min |
- 2.6 nights of eight hours, or 0.88 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 776 Wh of rated capacity — 1.1× this station.
- Start-up: the medication fridge (insulin) asks for 300 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 | 19 h 25 min | -8% |
| The pack is five years old | 16 h 53 min | -20% |
| It is −10 °C outside | 16 h 53 min | -20% |
| You run it flat, no reserve | 23 h 26 min | +11% |
| You keep 20% back | 18 h 45 min | -11% |
Small, tightly controlled and rarely opened; the priority is uninterrupted running rather than raw hours.
If you need it to run longer
These run a medication fridge (insulin) 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 | 2 days 8 h | £849 / $999 |
| OUKITEL P2001 Ultimate | 2,000 | 2 days 7 h | £999 / $1,099 |
| OUKITEL BP2000 | 2,048 | 2 days 8 h | £1,099 / $1,199 |
| EcoFlow DELTA 2 Max | 2,048 | 2 days 6 h | £1,199 / $1,399 |
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 | 22 h 8 min | 9.7 kg | £449 / $429 |
| UGREEN PowerRoam 600 | 680 | 21 h 58 min | 8.4 kg | £449 / $499 |
| Goal Zero Yeti 700 | 677 | 21 h 52 min | 9.2 kg | — / $700 |
| Jackery Explorer 600 Plus | 632 | 21 h 22 min | 7.3 kg | — |
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