Runtime evidence · sourced load
An oxygen concentrator draws 85 W while running. 55 stations clear the capacity, inverter, and startup checks at that load.
Where our answer stops
BatteryRank has no medical expertise and claims none. We compute whether a battery can supply the power your device's own label states — that is an electrical question, not a medical one.
This page answers exactly one question: whether a station's inverter and battery can supply the watts and watt-hours your concentrator's own label states. It is not a judgement that battery backup is an appropriate contingency for supplemental oxygen. That belongs to the clinician who prescribed it and to the device manufacturer, and for many users the answer involves a backup cylinder and a utility medical-priority registration rather than a larger battery — neither of which any figure on this page substitutes for.
01 · Runtime ladder
Nominal capacity × depth of discharge × inverter efficiency ÷ sourced average draw.
| Capacity class | Estimated runtime | Evidence |
|---|---|---|
| 300 Whstep 1 | 2.7 hr | Portable oxygen concentrator (Inogen Rove 4 class) load · 2026-07-20 |
| 500 Whstep 2 | 4.5 hr | Portable oxygen concentrator (Inogen Rove 4 class) load · 2026-07-20 |
| 1,000 Whstep 3 | 9 hr | Portable oxygen concentrator (Inogen Rove 4 class) load · 2026-07-20 |
| 2,000 Whstep 4 | 18 hr | Portable oxygen concentrator (Inogen Rove 4 class) load · 2026-07-20 |
These are comparison projections, not a promise. Temperature, inverter behavior, cycling, and the individual station's measured delivered capacity can change real runtime.
03 · Passing stations
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Output-capable fit
Why it fits
2,915 W above the plan's running load (3,000 W continuous output)
Main compromise
9,000 W below the highest output reserve across 55 eligible models
Best all-round reserve
Why it fits
74.9 BatteryRank score — the highest of any station that fits this plan
Main compromise
4.8 points below the highest-scoring eligible model (54 of 55 eligible models have this sourced value)
Extended reserve
Why it fits
115.2 projected runtime hours
Main compromise
253.4 hours less projected runtime than the longest-running eligible model across 55 eligible models
This ordered data view is separate from the three recommended buying strategies above.
Runtime uses each linked model's sourced capacity and output data; open its dossier for provenance.
Solar effect
Computed with this model's sourced solar-input limit and BatteryRank's published harvest assumptions. Check the solar method → · Model sources →
04 · Evidence record