Measure
A CPAP's heated humidifier can materially increase consumption beyond the base machine's wattage -- medical-critical backup needs professional planning, not just a capacity estimate
PORTABLE POWER USE CASE
Portable power for cpap
Adjust the workload, backup duration, conversion efficiency, reserve and surge requirement before comparing products.
Pricing checked 15 July 2026Last checked 2026-07-15 · verify decisive terms directly
NU
Research profileIndependent dataRuntime and capacity estimator
Demonstration dataMINIMUM MODELLED CAPACITY1,046 Wh
✓ 150 W output or higher
✓ 16.7–18.8 hours from an equal-size rated battery
✓ 1 kWh class
✓ Size solar from realistic daily input, not panel nameplate alone
Compare portable power stations →BEFORE YOU COMPARE
Assumptions that matter
Usable energy
Confirm the station's continuous output and waveform (pure sine wave is generally preferred) are compatible with your specific CPAP model
Output
This is a safety-relevant use case -- consult your CPAP manufacturer or a medical-equipment professional before relying on any power station as a sole backup
Compatibility
Model 80–90% usable energy rather than assuming the full nominal capacity is available for an overnight run
Suitable current starting points
current
DELTA 2
Expandable 1kWh-class station with broad port selection and app control.
- Capacity
- 1,024Wh
- Output
- 1,800W
- Solar
- 500W
- Weight
- 12kg
DELTA 3 1500
Current higher-capacity DELTA 3-series option for longer backup windows.
- Capacity
- 1,536Wh
- Output
- 1,800W
- Solar
- 500W
- Weight
- 16.5kg
C1000
Fast-charging 1kWh-class station with strong solar input for its size.
- Capacity
- 1,056Wh
- Output
- 1,800W
- Solar
- 600W
- Weight
- 12.9kg
C1000 Gen 2
Separate second-generation model with higher continuous output and updated charging design.
- Capacity
- 1,024Wh
- Output
- 2,000W
- Solar
- 600W
- Weight
- 11.3kg
Potentially undersized
RIVER 3 Plus
Its capacity or output is below the conservative default model. Recalculate with measured loads.
Elite 30 V2
Its capacity or output is below the conservative default model. Recalculate with measured loads.
C300
Its capacity or output is below the conservative default model. Recalculate with measured loads.
TECHNICAL AND SAFETY GUIDANCE
What changes the result
Battery chemistry
LiFePO₄ commonly prioritizes cycle life and thermal stability. Manufacturer cycle claims use controlled conditions.
Solar charging
Panel nameplate watts are not daily energy. Allow for shade, angle, heat, cable loss and controller limits.
Country voltage
Buy the regional output version and confirm appliance voltage, plug shape, frequency and warranty geography.
Air travel
Passenger limits make nearly every station in this catalogue unsuitable for aircraft carriage.
UPS claims
Transfer time and waveform matter. Do not treat a consumer EPS as medical or zero-transfer infrastructure.
Safe use
Keep ventilation clear, avoid moisture and damaged cables, and follow manufacturer temperature and grounding instructions.
CPAP POWER QUESTIONS
Frequently asked questions
No. It is a planning range based on entered watts and efficiency. Temperature, standby draw, power factor and battery controls change real results.