Portable power stations, compared in one dataset

Use case

Best portable power stations for CPAP and medical device backup

A CPAP is a nightly, non-negotiable load. Sizing is straightforward once you know whether the humidifier and heated tube are in use — and it changes the capacity you need by more than double.

Open best-of guideSize with Power FitBrowse stations
Portable power station on a bedside table powering a CPAP machine overnight

Who this is for

  • CPAP and BiPAP users who need guaranteed overnight power
  • Households with a home oxygen concentrator or similar device
  • Anyone whose outage plan cannot tolerate a single missed night

What actually decides the buy

  1. Capacity (Wh). The whole decision. Humidifier and heated tube can double or triple draw.
  2. Continuous AC output. Modest for a CPAP, but confirm the device tolerates the inverter waveform.
  3. DC output option. Running a CPAP from 12V DC instead of AC can extend runtime substantially.
  4. Recharge speed. You need it full again before the next night.
  5. Pass-through charging. Keeps the unit topped up while it stays connected.

Sizing bands

BandRated WhWhat it buys
One night, no humidifier300–500 WhTypical CPAP draw only
One night, with humidifier600–1000 WhRoughly doubles the load
Two nights plus essentials1000–2000 WhMargin for a second night and other devices

Common traps

  • Sizing for the CPAP without the humidifier, then using the humidifier
  • Buying a single-night battery and having no margin for a second night
  • Assuming an AC inverter is the most efficient path — DC is usually better
  • Forgetting the device may need a specific DC adapter cable

Brands that serve this job

  • Jackery — Simple operation and a well-known name, which matters for a medical purchase.
  • EcoFlow — UPS behavior and app visibility on state of charge overnight.
  • Anker SOLIX — Quiet operation and a clear app for checking remaining runtime.
  • Goal Zero — Long-standing 12V output support and DC accessories.

Guides & compares in this cluster

All guides →

Primary guide: start with the featured pick below. Other roundups in this cluster are branches — same job, narrower lens (e.g. solar-kit or overnight-only cuts).