Best Power Station for CPAP Machines

For CPAP users, a power outage isn't just an inconvenience — it can mean a night without treatment. Here's how to choose the right power station specifically for CPAP backup, without overpaying for capacity you don't need.

What CPAP Machines Actually Draw

Most CPAP machines draw 30-60W without a humidifier, or 60-90W with the heated humidifier running. Over an 8-hour night, that works out to roughly 240-480Wh without humidifier, or 480-720Wh with it — see our full CPAP power outage guide for exact calculations by machine type.

Sizing Recommendation by Nights of Backup

Nights of Backup Needed	Recommended Capacity
1-2 nights, no humidifier	300-500Wh
1-2 nights, with humidifier	500-800Wh
5+ nights, no humidifier	1,000Wh+
5+ nights, with humidifier, or CPAP plus other essentials	1,500-2,000Wh+

Our Top Picks for CPAP Users

Bluetti AC70 — 768Wh, quiet, compact. Covers roughly 16-17 nights of no-humidifier CPAP use per charge, with headroom for phone charging too.

Jackery Explorer 1000 v2 — 1,070Wh. The best pick if you want CPAP backup plus enough capacity to also cover a mini fridge or other essentials during a longer outage.

EcoFlow River 3 — 245Wh, the most compact and affordable option if you only need a few nights of no-humidifier backup and want minimal bulk on your nightstand.

What Else to Consider for CPAP Specifically

• Pure sine wave output — nearly all mainstream LiFePO4 power stations provide this, which is important for sensitive medical equipment; verify this spec if considering a lesser-known brand.
• Quiet operation — you'll be sleeping near it, so check for any fan noise at low loads (most CPAP-range draws are well within silent operation for LiFePO4 units).
• A pass-through/UPS mode if you want it plugged in and charging normally, only kicking in automatically the moment grid power drops — useful for CPAP users who don't want to manually switch over mid-sleep.

Power Station vs. a Dedicated CPAP Travel Battery

A power station and a CPAP-specific travel battery solve different problems — here's how to pick between them:

	Power Station	Dedicated CPAP Travel Battery
Capacity	245Wh–2,000Wh+	Typically 40–100Wh
Nights of backup	Several to dozens	Usually 1–3 nights
Can power other devices	Yes (fridge, lights, phones)	No, CPAP only
Portability	Heavier, bulkier	Very compact, travel-friendly
Air travel	Almost never flies (exceeds FAA limits)	Often flies (check exact Wh rating)
Typical price	$200–$2,000+	$100–$250

For home outage backup, a power station wins on flexibility and capacity. For air travel specifically, a small dedicated CPAP battery is usually the only option that's actually allowed on a plane — see our flying with a power station guide for the exact FAA rules.

Talk to Your Doctor or DME Provider

This guide covers general power sizing, not medical advice — if your CPAP pressure settings or humidifier use are unusual, or you rely on additional medical equipment overnight, confirm your specific power needs with your durable medical equipment (DME) provider or physician.

Frequently Asked Questions

Will a power station damage my CPAP machine?

No — a properly functioning LiFePO4 power station with pure sine wave output is safe for CPAP machines and won't damage the device, as long as the power station's continuous output rating exceeds your machine's power draw.

How many nights should I plan for when buying?

Plan for at least the length of a typical outage in your region, plus a buffer — for hurricane-prone areas, that often means 5-7 nights; see our hurricane preparedness checklist for regional guidance.