RIVER 2 Max › runs › Oxygen Concentrator

Can an EcoFlow RIVER 2 Max run an oxygen concentrator?

Yes — the EcoFlow RIVER 2 Max runs an oxygen concentrator.
The oxygen concentrator draws about 350 W running, with a 600 W startup surge; the RIVER 2 Max delivers 500 W continuous and 1,000 W surge. Its 512 Wh battery runs one for about 1.3 h.

350 WOxygen Concentrator running

500 WRIVER 2 Max continuous

~1.3 hruntime

512 WhRIVER 2 Max capacity

Check the RIVER 2 Max at EcoFlow → Full specs

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The check
Continuous: 500 W ≥ 350 W needed → ok
Surge: 1,000 W ≥ 600 W needed → ok
Runtime: 512 Wh × 90% ÷ 350 W avg = ~1.3 h

Bigger units that run it longer

677 Wh · 1,000 W cont

768 Wh · 1,000 W cont

~2.0 h

Anker SOLIX C800

768 Wh · 1,200 W cont

~2.0 h

Goal Zero Yeti 1000 Core

983 Wh · 1,200 W cont

~2.5 h

EcoFlow DELTA 2

1,024 Wh · 1,800 W cont

~2.6 h

Common questions

Can the EcoFlow RIVER 2 Max run an oxygen concentrator?

Yes. An oxygen concentrator draws about 350 W with a 600 W startup surge, and the EcoFlow RIVER 2 Max delivers 500 W continuously with a 1,000 W surge rating — comfortably enough. On its 512 Wh battery it runs one for roughly 1.3 h.

Sources: Oxygen Concentrator wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); RIVER 2 Max specs — manufacturer published specifications (compiled 2026-06-15; approximate). Informational only — a computed sizing estimate from published appliance-wattage charts and manufacturer station specs. It is not an electrical guarantee. For hardwired or whole-home backup, transfer switches, or any permanent install, consult a licensed electrician.