Appliances › Medical & CPAP

What size power station runs an oxygen concentrator?

A continuous, non-negotiable medical load — size with real headroom and a step-up unit.

350 Wrunning watts

600 Wstartup surge

100%duty cycle

3,111 Whfor 8.0 h

Need to run it alongside other things? Add it to the full sizing tool with the rest of your load.

What size you need for 8.0 h

You need about 3,111 Wh — and 7 units fit. The smallest sufficient is the EcoFlow DELTA Pro; we never push more capacity than your load can use. Surge to clear: 600 W.

The math
Running watts (everything on at once) = 350 W
Surge watts (worst single startup + the rest running) = 600 W
Average draw (cyclic loads counted by their duty cycle) = 350 W
Watt-hours = 350 W × 8.0 h ÷ 90% usable reserve = 3,111 Wh

EcoFlow DELTA Prosmallest that fits

3,600 Wh 3,600 W cont · 7,200 W surge expandable ~9.3 h on this load $$$

The whole-home contender on wheels — 3,600 W, expandable to 25 kWh, panel-ready with a transfer switch.

LiFePO4 · AC + EV charging; expandable to 25 kWh · 99 lb

Check price on the EcoFlow DELTA Pro → Full specs

Anker SOLIX F3800

3,840 Wh 6,000 W cont · 9,000 W surge expandable ~9.9 h on this load $$$

A 6,000 W, 240 V system for whole-home backup including a well pump and electric range, expandable to ~27 kWh.

LiFePO4 · 120/240 V; expandable to 26.9 kWh · 132 lb

Check price at Amazon → Full specs

Anker SOLIX SOLIX F3800 Plus

3,840 Wh 6,000 W cont · 12,000 W surge expandable ~9.9 h on this load $$$

The newer-generation F3800 — same 3,840 Wh and 6,000 W continuous rating, but double the solar input (3,200 W) and adds 240V gas-generator bypass charging for extended outages.

LiFePO4 · ~1.5 h with 240V generator input; under 3 h AC; up to 3,200W dual-MPPT solar · 137 lb

Check price at Amazon → Full specs

Goal Zero Yeti PRO 4000

3,993 Wh 3,600 W cont · 7,200 W surge expandable ~10 h on this load $$$

Goal Zero’s LiFePO4 flagship — 4 kWh, 3,600 W, whole-home with the transfer switch and tanks.

LiFePO4 · Fast AC; expandable to ~27 kWh · 104 lb

Check price at Amazon → Full specs

EcoFlow DELTA Pro 3

4,096 Wh 4,000 W cont · 8,000 W surge expandable ~11 h on this load $$$

A 4 kWh, 4,000 W (120/240 V) system built specifically for whole-home backup.

LiFePO4 · AC/solar/EV; expandable to 48 kWh · 113 lb

Check price at Amazon → Full specs

Jackery Explorer 5000 Plusstep-up

5,040 Wh 7,200 W cont · 14,400 W surge expandable ~13 h on this load $$$

The largest single Jackery unit — 120/240V split-phase output makes it a real panel-level whole-home contender, not just a big portable.

LiFePO4 · True 120V/240V split-phase output; expandable to 60 kWh with additional battery packs and units · 135 lb

Check price at Amazon → Full specs

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Can a specific unit run an oxygen concentrator?

44 of the units we track deliver enough watts to run an oxygen concentrator. Check a specific one for the runtime and the full verdict:

677 Wh · 1,000 W cont

768 Wh · 1,000 W cont

runs it

Anker SOLIX C800

768 Wh · 1,200 W cont

runs it

Common questions

What size power station do I need to run an oxygen concentrator?

An oxygen concentrator draws about 350 W running, with a startup surge near 600 W. So you want a unit with at least 350 W continuous output and 600 W+ surge. For 8.0 h of runtime that's roughly 3,111 Wh of capacity — the EcoFlow DELTA Pro is the smallest unit that clears all of it.

How many watts does an oxygen concentrator use?

About 350 W while running, spiking to roughly 600 W on startup.

Sources: Oxygen Concentrator wattage — Standard appliance-wattage / generator-sizing charts (representative values; verify your nameplate); station specs — manufacturer published specifications (compiled 2026-08-10; 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.