How long will an EcoFlow RIVER Pro run a 12 V compressor cool box (Dometic CFX5, Alpicool)?
A little over a day — 26 h 50 min typically, from 25 h 40 min in the worst case to 27 h 42 min at best. That assumes a 12 V compressor cool box (Dometic CFX5, Alpicool) pulling 45 W for 40% of the time (average 18 W), plus the station's 2 W 12 V DC socket overhead — 20 W in total out of 537 usable watt-hours.
This appliance runs from the station's 12 V DC socket, which skips the inverter — that is worth roughly 8% more running time than the same load through a mains socket.
The numbers
| Setup | Average draw | Cautious | Typical | Best case |
|---|---|---|---|---|
| 1 × 12 V compressor cool box (Dometic CFX5, Alpicool), UK 230 V | 20 W | 25 h 40 min | 26 h 50 min | 27 h 42 min |
| 2 × 12 V compressor cool box (Dometic CFX5, Alpicool), UK 230 V | 38 W | 13 h 31 min | 14 h 7 min | 14 h 35 min |
| 1 × 12 V compressor cool box (Dometic CFX5, Alpicool), US 120 V | 20 W | 25 h 40 min | 26 h 50 min | 27 h 42 min |
- 3.4 nights of eight hours, or 1.12 days of continuous running.
- Usable energy: 537 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 854 Wh of rated capacity — 1.2× this station.
- Start-up: the 12 V compressor cool box (Dometic CFX5, Alpicool) asks for 45 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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What changes the answer
| If instead… | Typical runtime | Change |
|---|---|---|
| The pack is two years old | 24 h 41 min | -8% |
| The pack is five years old | 21 h 28 min | -20% |
| It is −10 °C outside | 21 h 28 min | -20% |
| You run it flat, no reserve | 29 h 49 min | +11% |
| You keep 20% back | 23 h 51 min | -11% |
Runs straight off the 12 V socket and skips the inverter, which is why it is the most efficient way to keep food cold off-grid.
If you need it to run longer
These run a 12 V compressor cool box (Dometic CFX5, Alpicool) 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 | 3 days 8 h | £849 / $999 |
| ALLPOWERS S2000 Pro | 1,451 | 2 days 6 h | £899 / $549 |
| Bluetti AC180P | 1,440 | 2 days 9 h | £899 / $649 |
| OUKITEL P2001 Ultimate | 2,000 | 3 days 7 h | £999 / $1,099 |
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 | 28 h 10 min | 9.7 kg | £449 / $429 |
| UGREEN PowerRoam 600 | 680 | 26 h 44 min | 8.4 kg | £449 / $499 |
| Goal Zero Yeti 700 | 677 | 26 h 38 min | 9.2 kg | — / $700 |
| Jackery Explorer 600 Plus | 632 | 24 h 52 min | 7.3 kg | — |
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