RIVER 2 › runs › CPAP Machine (no humidifier)

Can an EcoFlow RIVER 2 run a cpap machine (no humidifier)?

Yes — the EcoFlow RIVER 2 runs a cpap machine (no humidifier).
The cpap machine (no humidifier) draws about 40 W (a steady resistive load); the RIVER 2 delivers 300 W continuous and 600 W surge. Its 256 Wh battery runs one for about 5.8 h.

40 WCPAP Machine (no humidifier) running

300 WRIVER 2 continuous

~5.8 hruntime

256 WhRIVER 2 capacity

Check the RIVER 2 at EcoFlow → Full specs

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The check
Continuous: 300 W ≥ 40 W needed → ok
Surge: 600 W ≥ 40 W needed → ok
Runtime: 256 Wh × 90% ÷ 40 W avg = ~5.8 h

Bigger units that run it longer

Goal Zero Yeti 200X

187 Wh · 120 W cont

~4.2 h

Jackery Explorer 240 v2

Jackery Explorer 300 Plus

677 Wh · 1,000 W cont

~15 h

Common questions

Can the EcoFlow RIVER 2 run a cpap machine (no humidifier)?

Yes. A cpap machine (no humidifier) draws about 40 W, and the EcoFlow RIVER 2 delivers 300 W continuously with a 600 W surge rating — comfortably enough. On its 256 Wh battery it runs one for roughly 5.8 h.

Sources: CPAP Machine (no humidifier) wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); RIVER 2 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.