The short answer
A typical home oxygen concentrator needs about 300 W running, averaging about 300 W over time. A full day needs roughly 8,471 Wh of battery.
The load and who can run it
| Item | Typical value | Basis |
|---|---|---|
| Running watts | 300 W | typical planning value |
| Starting watts | No significant surge | typical planning value |
| Duty cycle | 100% | share of time drawing power |
| Average draw | 300 W | running watts × duty cycle |
Medical equipment: use the device label and the maker's backup-power guidance. Do not rely on this table.
SafetyThis is medical equipment. Wattstanding cannot say whether any product is suitable as backup for a medical device. Use the device label, ask the device maker and your prescriber about backup power, and plan for outages with your care team.
Power stations that can run it (76)
Wattstanding calculationWattstanding calculation — runtime = capacity × 85% ÷ (running watts × duty cycle). Showing the 30 lowest-priced of 76 qualifying stations.
Generators that can run it (157)
Total your own list with the appliance load & runtime calculator.
Questions readers ask
How many watts does a home oxygen concentrator use?
A typical one runs on about 300 W; averaged over time it draws about 300 W. Check your own nameplate.
How many watt-hours do I need to run it for a day?
About 8,471 Wh of battery capacity for 24 hours, by our calculation (average draw × 24 h ÷ 85% efficiency).
Figures marked as Wattstanding calculations show their working; product figures come from the sources on each product page. How we work