How Long Will the EcoFlow River 3 Run a Desktop Computer with Monitor?
Updated 2026-10-17 · Yes
The numbers
| Battery capacity | 245Wh (LFP) |
|---|---|
| Usable energy | 208Wh (85% via AC outlets) |
| Continuous AC output | 300W |
| Surge rating | 600W |
| Desktop computer with monitor running watts | 150W |
| Startup watts | 150W |
| Average draw | 150W |
| Estimated runtime | 1.4 hours |
| Energy per day of typical use | 1.2 kWh |
245Wh × 0.85 = 208Wh usable ÷ 150W average = 1.4 hours
Station specs: source, checked 2026-10-17. See how we calculate runtime.
Adjust the numbers
Check the label on your desktop computer with monitor and enter its real wattage.
Recharging with solar
The EcoFlow River 3 accepts up to 110W of solar input. In real conditions that harvests about 413Wh on a sunny day (5 peak-sun hours).
Solar can’t fully keep up. A desktop computer with monitor uses about 1.2 kWh a day at 8 hours of use, more than the EcoFlow River 3’s best-case solar harvest. Solar will stretch the runtime but not sustain it.
Tips
- An office desktop plus a 27-inch monitor averages about 150W during normal work.
- You’ll still have about 150W of AC capacity left for other devices at the same time, though they’ll share the same battery.
- The EcoFlow River 3 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 desktop computer with monitor
| Power station | Capacity | Output | Runtime | Verdict |
|---|---|---|---|---|
| EcoFlow River 2 | 256Wh | 300W | 1.5 hours | Yes |
| Jackery Explorer 240 v2 | 256Wh | 300W | 1.5 hours | Yes |
| Bluetti EB3A | 268Wh | 600W | 1.5 hours | Yes |
| Jackery Explorer 300 Plus | 288Wh | 300W | 1.6 hours | Yes |
| Anker SOLIX C300 | 288Wh | 300W | 1.6 hours | Yes |
| Goal Zero Yeti 500X | 505Wh | 300W | 2.9 hours | Yes |
| EcoFlow River 2 Max | 512Wh | 500W | 2.9 hours | Yes |
| Anker 535 PowerHouse | 512Wh | 500W | 2.9 hours | Yes |
Compare all power stations for a desktop computer with monitor →
FAQ
Will the EcoFlow River 3 run a desktop computer with monitor overnight?
No. At about 150W average it runs out after 1.4 hours. For a full night you need at least 1500Wh of capacity.
How long does the EcoFlow River 3 take to recharge with solar?
With its maximum 110W of solar input it refills in about 3 hours of strong sun. A single 200W panel is enough to max out its solar input.