Watts

Typical figures for this type, from the sources at the foot of this page. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.

Running, typical
95 W
Running, low to high
45 W to 145 W
Starting
Not publishedmotors often need 2 to 3 times their running watts to start
Typical use a day
12 hhours the motor actually runs
Average draw while on
95 W
Voltage
120 V
  • Counts the running watts for every hour you enter.
  • Starting watts not published; motors often need 2 to 3 times their running watts to start.
For medical equipment, confirm the power needs with the device maker and keep a backup plan. This page is not medical advice. At the high end of the range, 145 W, the BLUETTI Apex 300 runs it for 16.2 h, not 24.7 h.

The math

Worked with the typical figure, as the calculator does it.

  1. Output95 W running, so the station's continuous output must be at least 95 W.
  2. SurgeStarting watts are not published, so the surge check uses the 95 W running figure.
  3. Average draw95 W: the running watts count for every hour it is on, as if the motor never paused.
  4. A typical day95 W × 12 h = 1,140 Wh a day.
  5. 8 hours of running95 W × 8 h = 760 Wh usable, ÷ 0.85 = 894 Wh of rated capacity.
  6. 24 hours of running95 W × 24 h = 2,280 Wh usable, ÷ 0.85 = 2,682 Wh of rated capacity.
  7. On the BLUETTI Apex 3002,765 Wh × 0.85 = 2,350 Wh usable, ÷ 95 W = 24.7 h.

Stations that run it

Every power station in the data with this appliance alone plugged in, at 85% efficiency. Type the running watts from your own label and the table works it out again.

Add it to the runtime calculator with the rest of your list

What moves the number

The flow mode decides the draw, and charging the unit's own battery adds to it. One common portable draws 45 W on pulse setting 1, 95 W on setting 6 and 145 W on continuous flow.

Makers sell DC car cords for these units, which run them from the station 12 V outlet without the inverter.

Questions

How many watts does a portable oxygen concentrator use?
About 95 W while running, from 45 W to 145 W across the models in our sources. Watts vary by model and age. Check the label on your own appliance and enter it for an exact answer.
Can a portable power station run a portable oxygen concentrator?
Yes. All 54 power stations in the Enough Watts data set can power it on its own. It takes at least 95 W of continuous output.
How long will a power station run a portable oxygen concentrator?
It depends on the battery. At 85% efficiency the smallest station that powers it, the BLUETTI Elite 10 Mini (128 Wh), gives about 1.1 h. The largest, the EcoFlow DELTA Pro Ultra X (12,288 Wh), gives about 4.6 days.
Does a portable oxygen concentrator need extra watts to start?
Its starting watts are not published, and motors often need 2 to 3 times their running watts to start. Without a published figure the site checks the start at the 95 W running figure, so leave headroom above that on your station.

Sources

Researched from these pages, then checked against them a second time.

  1. Eclipse 5 with autoSAT Oxygen Concentrator Technical Service Manual, PN 20631679 Rev J maker manual, checked
  2. Inogen Rove 6 US User Manual EN, 96-13622-00-01 Rev A, December 2024 (linked from provider.inogen.com product materials) maker manual, checked
  3. FreeStyle Comfort with autoSAT spec sheet ML-CONC0138 maker specification sheet, checked

We read published figures and do the math; we do not measure appliances. The methodology states every formula on this page. Capacities are rated watt hours: 1,000 Wh rated gives 850 Wh usable at the default.