Guides · Updated October 12, 2026
How long will a power station run an oxygen concentrator?
A home oxygen concentrator at 300 W uses about 7,200 Wh a day, so even the largest portable unit we cover, the EcoFlow DELTA Pro 3, runs it for about 12 hours. That is the honest number, and it means the plan for anyone on continuous oxygen has to include recharging or a second source, not just a bigger battery.
Runtimes by unit
| Unit | Battery | Runtime at 300 W |
|---|---|---|
| EcoFlow DELTA 3 Max | 2,048 Wh | 6 hours |
| Jackery HomePower 3000 | 3,072 Wh | 9 hours |
| Anker SOLIX F3800 Plus | 3,840 Wh | 11 hours |
| Goal Zero Yeti PRO 4000 | 3,994 Wh | 11 hours |
| EcoFlow DELTA Pro 3 | 4,096 Wh | 12 hours |
Concentrators vary from about 120 W for a 2 L/min unit to 600 W for 10 L/min. Check the label on yours and use our runtime calculator.
What a realistic plan looks like
- A portable concentrator with batteries for the first hours. They draw 40 to 100 W and their own batteries last 2 to 8 hours.
- An expandable power station for the night. The EcoFlow DELTA Pro 3, Anker SOLIX F3800 Plus and Goal Zero Yeti PRO 4000 all accept add-on batteries, and the brands' "extra battery" packs roughly double runtime each.
- A way to recharge. 400 W of solar panels put back around 1,500 to 2,000 Wh on a sunny day, which is roughly 6 hours of concentrator use. A small inverter generator can recharge a power station in 2 to 3 hours and is quieter than running the concentrator from the generator directly.
- Tell your utility. Most US utilities keep a medical-needs registry that gets you priority restoration and advance warning of planned outages.
The units that fit
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DELTA Pro 3
Largest unit we cover: about 23 hours on one charge; add batteries to reach the target.
Yeti PRO 4000
About 23 hours on one charge; add batteries to reach the target.
F3800 Plus
About 22 hours on one charge; add batteries to reach the target.
Prices are each brand's list price on October 12, 2026; buy links go to Amazon, where the price can differ. Adjust the devices and days in the finder for your own numbers, or see all 20 models.
Common questions
Does the oxygen concentrator need a pure sine wave inverter?
Yes. All the units we list produce pure sine wave AC. Avoid cheap modified-sine-wave inverters, which can damage the compressor.
Can I run the concentrator and a CPAP together?
Yes. Add about 40 W for the CPAP, so 340 W total. On a 4 kWh unit that is roughly 10 hours instead of 12.