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 12 units fit. The smallest sufficient is the Mango Power Power E; 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

Mango Power Power Esmallest that fits

3,506 Wh 3,000 W cont · 4,800 W surge expandable ~9.0 h on this load $$$

First Mango Power entry — a 3.5 kWh, 3,000 W home-backup unit on CATL LFP cells rated 6,000+ cycles, expandable to 14 kWh with add-on batteries.

LiFePO4 (CATL) · 0-80% in 60 min AC (30A fast-charge cable); full in ~1.5 h · 100 lb

Check price on the Mango Power Power E → Full specs

EcoFlow DELTA Pro

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 at Amazon → Full specs

Growatt HELIOS 3600

3,686 Wh 3,600 W cont · 4,500 W surge expandable ~9.5 h on this load $$$

Whole-home-class unit, expandable to 36 kWh; Watt+ mode boosts to 4,500 W of loads.

LiFePO4 · Simultaneous 120V/240V + XT60/Anderson solar input for fast combined charging · 99 lb

Check price at Amazon → Full specs

Bluetti Elite 400

3,840 Wh 2,600 W cont · 3,900 W surge ~9.9 h on this load $$$

Bluetti's own billed as the lightest 3.8 kWh station on the market — a non-expandable, sealed unit undercutting the EcoFlow DELTA Pro and Anker SOLIX F2600 on price/capacity; part of the new Elite series alongside the existing elite-300/elite-100-v2/elite-200-v2.

LiFePO4 · AC+solar combined 0-80% in 70 min (2,800 W); AC-only full in 2.5 h; solar max 1,000 W · 86 lb

Check price at Amazon → 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 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

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Can a specific unit run an oxygen concentrator?

56 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

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 Mango Power Power E 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 2026-10-05; 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.