Best Power Station for CPAP (2026)

Updated February 2026 • Tested with ResMed & Philips machines

If you rely on a CPAP for sleep apnea, a power outage isn't just inconvenient — it's a health risk. A portable power station ensures your CPAP keeps running through the night, whether you're facing a blackout or camping off-grid.

How Much Power Does a CPAP Use?

The math: A 500Wh power station runs a CPAP (without humidifier) for about 1.5 nights. A 768Wh unit like the EcoFlow River 2 Pro gets you 2-3 nights of sleep.

Our Top Picks

1. EcoFlow River 2 Pro — Best Overall

The River 2 Pro is the Wirecutter's top pick for portable power stations, and it's ideal for CPAP backup. At 768Wh, it powers most CPAP machines for 2-3 nights without the humidifier, or 1.5-2 nights with it.

Key features:

• Pure sine wave output (CPAP-safe)
• Only 17 lbs — easy to move or pack
• Charges 0-100% in 70 minutes from wall
• 4 AC outlets + USB ports

Best for: Most CPAP users who want a reliable backup for outages or occasional camping.

2. Jackery Explorer 500 — Budget Pick

If you just need one night of backup power, the Jackery 500 (518Wh) costs $100 less. Jackery has excellent build quality and customer support. The downside: it only gets you 1-2 nights.

Best for: Budget-conscious users who primarily need short-term backup.

3. Bluetti EB70S — Best Value

The EB70S offers 716Wh for $449 — $50 less than the EcoFlow with similar capacity. It uses LiFePO4 batteries (3,000+ cycles vs 800 for regular lithium-ion), meaning it'll last years longer.

Best for: Long-term value; users who plan to use it regularly.

4. EcoFlow Delta 2 — Maximum Runtime

If you need 4+ nights of runtime or use a heated humidifier, the Delta 2 (1,024Wh) is worth the upgrade. It's heavier (27 lbs) but delivers serious capacity.

Best for: Extended outages, heavy humidifier use, or powering additional devices.

Tips for CPAP Users

Maximize Your Runtime

• Turn off the humidifier: Saves 50% battery. Use a bottle of water nearby for dry mouth.
• Use DC power if available: Many CPAPs have a DC adapter that's more efficient than AC.
• Lower pressure settings: If medically appropriate, lower pressure uses less power.
• Keep it cool: Batteries are less efficient in hot environments.

Check Your CPAP's Requirements

Before buying, check your CPAP's power requirements:

• ResMed AirSense 10/11: 24V DC, 30-60W (works with all our picks)
• Philips DreamStation: 12V DC, 40-65W (works with all our picks)
• ResMed AirMini: 20W max (any power station works)

What About Dedicated CPAP Batteries?

Brands like Medistrom and Freedom V² make CPAP-specific batteries. They're lighter and optimized for CPAP use, but:

• ❌ Cost $300-400 for only 100-150Wh
• ❌ Can only power your CPAP (nothing else)
• ❌ Proprietary connectors for specific machines

A portable power station costs slightly more but gives you 5x the capacity AND can power your phone, router, fridge, and other devices. For most people, it's the better investment.

The Bottom Line

The EcoFlow River 2 Pro is our top pick for CPAP backup. It's portable enough to take camping, powerful enough for 2-3 nights of sleep, and can double as emergency backup for your whole house.