1
Voltage Gate
PASSDevice output type must match generator output.
120V required -> 120V available
Yes, the DELTA 2 can run a CPAP Machine
This pairing clears the safety headroom. Required ~65W running and 120W surge; the DELTA 2 is rated 1800W / 2700W.
Power Margin Analysis
1800W / 2700W Capacity Running 1735W headroom
65W required
Surge 2580W headroom
120W required
Decision Gate Waterfall
Same decision gates as the engine: voltage, running, surge. Runtime is shown as operational context.
2
Running Gate
PASSContinuous draw with safety buffer applied.
65W required -> 1,800W available (1,735W headroom)
Required 65W required
Available 1,800W
3
Surge Gate
PASSStartup peak with safety buffer applied.
120W required -> 2,700W available (2,580W headroom)
Required 120W required
Available 2,700W
4
Runtime Insight
INFORuntime context only. It does not change the electrical compatibility verdict.
Continuous estimate: 12.8h
Device profile reference: up to 8h per day.
Power bars show required versus available output for each gate.
View full compatibility reportDecision Snapshot
Quick compatibility, required headroom, and model-specific context at a glance.
⚡
1800W
Running Power
🔋
1024Wh
Capacity
⏱️
~12.8h
Est. Runtime
☀️
500W
Solar Input
Quick Compatibility Check
- 1 Running headroom: target 65W; generator provides 1800W.
- 2 Surge headroom: target 120W; generator provides 2700W.
- 3 Tip: leave headroom for startup spikes and warm conditions.
Model-Specific Results
3 of 3 models are SAFE or TIGHT. Most demanding model: ResMed AirSense 10 AutoSet (104W surge).
| Model | Running | Surge | Verdict | Runtime | Source |
|---|---|---|---|---|---|
| ResMed AirSense 11 AutoSet | 56.1W | 73.2W | Safe | ~12.8h | OEM Manual |
Show expert analysisTechnical: **Running load:** 56.1 W typical. **Surge:** 73.2 W peak. **Voltage:** 120 V AC. The machine draws continuous low power with minimal startup spike. Most portable power stations with 120V inverters and 100+ W output handle this load comfortably. Field note: Verify your power station provides stable 120V AC output and at least 75W continuous rating. Disable the heated humidifier to reduce draw by ~30% and extend runtime. Always carry a backup power source for life-critical equipment. Can I run the AirSense 11 on a 500Wh power station? Yes — at 56.1W typical, a 500Wh station (350Wh usable) provides roughly 6 hours. Disabling the humidifier drops draw to ~40W and extends runtime to a full night. | |||||
| ResMed AirSense 10 AutoSet | 53W | 104W | Safe | ~13.5h | OEM Manual |
Show expert analysisTechnical: **Running load:** 53 W typical. **Surge:** 104 W peak. **Voltage:** 120 V AC required. The AirSense 10 has a higher peak draw than the newer AirSense 11 due to its older motor design. Field note: The 104W peak is the sizing constraint. Ensure your power station can handle at least 120W continuous to cover the startup surge with margin. Use a pure sine wave inverter — modified sine wave may cause motor faults in medical devices. Can I use a portable power station rated for 100W continuous? Risky — the AirSense 10 peaks at 104W. A station rated at exactly 100W may trip on startup. Look for 150W+ continuous rating to be safe. | |||||
| Fisher & Paykel SleepStyle Auto | 39W | 76W | Safe | ~18.4h | Engineering Est. |
Show expert analysisTechnical: **Running load:** 39 W typical. **Surge:** 76 W peak. **Voltage:** 120 V AC required. The SleepStyle has an integrated power supply (no external brick) and built-in heated humidifier. The 39W figure includes the humidifier at typical settings. Field note: The SleepStyle is the most power-efficient full-size CPAP here. At 39W typical, even a compact 500Wh power station covers a full night with margin. The integrated humidifier means no separate heater to add to the load. Is the Fisher & Paykel SleepStyle easier to run off-grid than ResMed? Yes — at 39W typical vs 53-56W for ResMed models, the SleepStyle draws roughly 30% less power. An 8-hour night consumes ~312 Wh vs 424-449 Wh for ResMed. | |||||
How This Pairing Performs Across Our Database
This unit ranks #13 of 33 compatible generators for this device by buffered margin (Overkill class).
How CPAP Machine Performs Across 33 Tested Generators
33 of 33 generators are SAFE+TIGHT for CPAP Machine.
33
Safe+Tight
Safe 33 (100%)
Power Comparison: EcoFlow DELTA 2 vs Top Alternatives for CPAP Machine
EcoFlow DELTA 2 Safe Overkill
Current unit
Running 1,800W
Surge 2,700W
Fit class uses buffered needs (running and surge) for this device.
Specs & Surge Analysis
Medical
CPAP Machine
8-Hour Sleep Session
Select Your Model:
56.1W
Running
104W
Surge
120V
Required
True Surge™ Analysis
Safety Buffer: +15% Running Power Usage 4% Utilization
65W required 1800W Capacity
1735W headroom
Surge/Startup Peak 4% Utilization
120W required 2700W Capacity
2580W headroom
Voltage Match 120V ↔ 120V ✓
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Generator Insights
The 2700W surge rating can support typical motor-driven appliances during startup, including residential refrigerators, sump pumps, and air compressor loads. The 1800W running capacity can handle simultaneous operation of multiple mid-range devices. This configuration addresses intermittent high-draw scenarios common in backup power applications.
LFP chemistry provides inherent thermal stability advantages over conventional lithium-ion chemistries. The 1024Wh capacity and dual output ratings reflect design margins for sustained and transient loads. Source: EcoFlow DELTA 2 User Manual v1.0 (manufacturer documentation).
Extend Runtime with Solar
Keep your CPAP Machine running with solar • MPPT: 11– 60V • Max: 500W
Official EcoFlow
400W Panel
1 Hour Sun =
Runs Indefinitely
MC4 -> XT60i
Full in ~3.7h Adapter required: MC4 -> XT60i.
Smart Value Bluetti
350W Panel
1 Hour Sun =
Runs Indefinitely
MC4 -> XT60i
Full in ~4.2h Adapter required: MC4 -> XT60i.
Smart Value Bluetti
200W Panel
1 Hour Sun =
Runs Indefinitely
MC4 -> XT60i
Full in ~7.3h Adapter required: MC4 -> XT60i.
Technical Analysis
Spec-Based • No GuaranteesTechnical Breakdown
Running range: 39W (F&P SleepStyle) to 56.1W (ResMed AirSense 11) typical. Peak surge: 104W (ResMed AirSense 10 startup). Voltage: 120V AC. CPAP machines are low-draw medical devices — the startup surge is the sizing constraint, not the running watts.
Expected Behavior
Estimated runtime: ~12.8h. An 8-hour sleep session consumes 312-449 Wh depending on model, pressure settings, and humidifier use. Load is steady after initial pressurization with minor fluctuations during the breath cycle.
Field Note
Use a pure sine wave power station — modified sine wave inverters may cause motor faults in medical devices. Disable the heated humidifier to reduce draw by ~30% and extend runtime. Always carry a backup power source for life-critical equipment.
Frequently Asked Questions
Can the EcoFlow DELTA 2 power a CPAP Machine?
Yes. The EcoFlow DELTA 2 provides 1800W running / 2700W surge. The CPAP Machine needs 65W / 120W (including 15% buffer). That leaves 1735W of running headroom and 2580W of surge margin.
How long will the DELTA 2 run a CPAP Machine?
Approximately 12.8 hours, based on the CPAP Machine's 56W draw and the DELTA 2's 1024Wh capacity (70% usable after real-world losses).
What Else Can You Run?
With 450W allocated to the CPAP Machine, the DELTA 2 still has ~934W of margin. These devices could run simultaneously:
🩺
CPAP (No Humidifier)
40W
🌬️
Nebulizer
60W
❄️
Medical Fridge
80W
🥘
Slow Cooker
200W
💡
LED Lamp
10W
🌀
Box Fan (Medium)
60W
Pro Tip for Medical Users: According to energy reports, turning off the humidifier on your CPAP Machine can double your runtime. Using a DC cable instead of the AC plug is also recommended to avoid inverter inefficiency.
Compare all 33 generators for the CPAP Machine
Ranked by budget, runtime, and overall compatibility.
Related Guides: How to Size a Power Station
Technical Sourcing & Verification
ID: ecoflow-delta-2-cpap-machine 🏛️ Device Data Source
Engineering Est. Safety Factor Applied
Derived from variant list (max of variants). Running worst case = ResMed AirSense 11 (56.1W typical). Surge worst case = ResMed AirSense 10 (104W peak).
⚡ Generator Specs Source
OEM Verified
EcoFlow DELTA 2 User Manual v1.0
Methodology informed by US Department of Energy (DOE) & EIA references where applicable.
Our methodology →
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