How Long Will the EcoFlow River 2 Pro Run a Humidifier?
Updated 2026-10-17 · Yes
The numbers
| Battery capacity | 768Wh (LFP) |
|---|---|
| Usable energy | 653Wh (85% via AC outlets) |
| Continuous AC output | 800W |
| Surge rating | 1600W |
| Humidifier running watts | 40W |
| Startup watts | 40W |
| Average draw | 40W |
| Estimated runtime | 16 hours |
| Energy per day of typical use | 320Wh |
768Wh × 0.85 = 653Wh usable ÷ 40W average = 16.3 hours
Station specs: source, checked 2026-10-17. See how we calculate runtime.
Adjust the numbers
Check the label on your humidifier and enter its real wattage.
Recharging with solar
The EcoFlow River 2 Pro accepts up to 220W of solar input. In real conditions that harvests about 825Wh on a sunny day (5 peak-sun hours), or about 750Wh with one 200W panel.
Solar can keep up. A humidifier uses about 320Wh a day at 8 hours of use, so with enough panels and good sun the EcoFlow River 2 Pro can run it indefinitely.
Tips
- Ultrasonic humidifiers use 25–50W; warm-mist models use far more (200W+).
- You’ll still have about 760W of AC capacity left for other devices at the same time, though they’ll share the same battery.
- The EcoFlow River 2 Pro uses LiFePO4 (LFP) cells, rated for thousands of cycles, so running it down daily won’t wear it out quickly.
Other power stations running a humidifier
| Power station | Capacity | Output | Runtime | Verdict |
|---|---|---|---|---|
| Jackery Explorer 500 | 518Wh | 500W | 11 hours | Yes |
| Anker SOLIX C800 Plus | 768Wh | 1200W | 16 hours | Yes |
| Bluetti AC70 | 768Wh | 1000W | 16 hours | Yes |
| Jackery Explorer 1000 | 1002Wh | 1000W | 21 hours | Yes |
| EcoFlow Delta 2 | 1024Wh | 1800W | 22 hours | Yes |
| DJI Power 1000 | 1024Wh | 2200W | 22 hours | Yes |
| Anker SOLIX C1000 | 1056Wh | 1800W | 22 hours | Yes |
| Jackery Explorer 1000 v2 | 1070Wh | 1500W | 23 hours | Yes |
FAQ
Will the EcoFlow River 2 Pro run a humidifier overnight?
Yes. Eight hours uses about 320Wh, roughly 49% of the EcoFlow River 2 Pro’s usable capacity.
How long does the EcoFlow River 2 Pro take to recharge with solar?
With its maximum 220W of solar input it refills in about 4.7 hours of strong sun. With a single 200W panel, expect about 5.1 hours of full sun.