Medistrom Pilot-Flex Battery & Back-Up Power Supply for CPAP/BiPAP Machines

The Medistrom Pilot-Flex is a dual-voltage, ultra-portable CPAP battery compatible with virtually any CPAP or BiPAP machine, including 12V and 24V models from ResMed, Respironics, React Health, and others. It's built for two jobs: powering your machine for 1–2 nights while traveling, and sitting inline at home as automatic backup power if the electricity goes out.

Is the Pilot-Flex Right for You?

This is a strong fit if you want one battery that covers both travel power and home power-outage backup, rather than buying two separate solutions. Its dual USB-A and USB-C ports are also a genuine bonus if you want a single travel battery that can charge your phone or tablet as well as your CPAP. Before ordering, check which cable your specific machine needs to connect to the Pilot-Flex — see the note below.

Key Features at a Glance

• 98Wh rechargeable lithium-ion battery, LG/Samsung industrial-grade cells
• Auto-sensing dual voltage: compatible with 12V and 24V CPAP/BiPAP machines
• Average 16-hour runtime — powers most CPAP machines for 1–2 nights per charge
• Lightweight aluminum housing at 1.2 lbs
• USB-A and USB-C ports for charging phones, tablets, and other devices
• Automatic home backup power during outages, with automatic recharge once power returns
• FAA compliant for carry-on air travel
• Multiple charging options: CPAP AC adapter, USB-C, car charger, or solar panel (car charger and solar panel sold separately)
• 1-year warranty
• Available in Charcoal or Dark Navy

A Cable Is Required to Connect Your Machine — Check Before You Order

The Pilot-Flex itself is a universal battery, but connecting it to your specific CPAP or BiPAP machine requires a separate, machine-specific cable, sold individually. For example, ResMed AirSense 11 owners need the Pilot Flex AirSense 11 Cable Kit, while AirSense 10 or Luna G3 owners need the Pilot Flex AirSense 10/Luna G3 DC Outlet Cable. Confirm the correct cable for your exact machine model before or immediately after ordering the battery itself, so you're not left waiting on a second shipment before you can actually use it.

Why Choose the Pilot-Flex

One Battery for Travel and Home Backup

Rather than choosing between a travel battery and a home backup power supply, the Pilot-Flex is designed to do both. For travel, it runs your CPAP for 1–2 nights per charge. At home, wired in series between your machine and wall power, it automatically takes over if the power goes out and recharges on its own once power returns — no manual switching required either way.

Dual Voltage, Broad Machine Compatibility

The auto-sensing dual voltage design works with 12V and 24V CPAP and BiPAP machines across major brands, including ResMed, Respironics, and React Health. That breadth of compatibility is a meaningful advantage if you've switched machine brands before or expect to in the future.

More Than a CPAP Battery

With both USB-A and USB-C output ports, the Pilot-Flex doubles as a general travel power bank for phones, tablets, and other handheld devices — useful if you'd rather pack one device than two.

Built for Air Travel

Current FAA regulations permit sleep apnea therapy devices and lithium-ion batteries like this one to be carried onboard commercial flights. Always confirm your specific airline's requirements for carrying medical equipment before you fly, since airline policies can vary even where FAA rules allow it.

Managing Runtime

The Pilot-Flex averages 16 hours of runtime, enough for 1–2 nights per charge for most CPAP machines. Using a heated humidifier, heated tubing, or other comfort features will noticeably reduce runtime — if you need to stretch a charge further, turning those features off while running on battery is the most effective way to do it. Multiple Pilot-Flex units can also be piggybacked together to extend total runtime for longer trips.

Charging Options

• Your CPAP's own AC adapter
• USB-C port, for a quick, travel-friendly charge
• Medistrom Car Charger (sold separately)
• Medistrom Solar Panel (sold separately), for charging off the grid

Long-Term Battery Care

Fully charge your Pilot-Flex before storing it, and recharge it at least once every 6 months even if you're not using it regularly. Skipping this can limit the battery's future charging capacity or damage it outright — worth setting a calendar reminder if this battery is mainly a backup you don't touch often.

Specifications

Complete Your Pilot-Flex Setup

Don't forget the machine-specific cable: Pilot Flex AirSense 11 Cable Kit or Pilot Flex AirSense 10/Luna G3 DC Outlet Cable, depending on your machine. See more from the brand on the Medistrom brand page.

Frequently Asked Questions

Do I need anything else to use this with my CPAP machine?

Yes — you'll need a machine-specific cable to connect the Pilot-Flex to your particular CPAP or BiPAP model, sold separately. Check which cable matches your machine before use.

How long will it power my CPAP?

On average, 1–2 nights per charge, based on a 16-hour average runtime. Using heated humidification or heated tubing will reduce this.

Can I use this as a home backup power supply, not just for travel?

Yes. Wired in series between your CPAP and wall power, the Pilot-Flex automatically takes over during an outage and recharges on its own once power is restored.

Can I bring this on a flight?

The Pilot-Flex is FAA compliant for carry-on air travel. Always check your specific airline's requirements for medical equipment and lithium-ion batteries before you fly.

Can I charge my phone with this?

Yes. The Pilot-Flex has both USB-A and USB-C ports, which can charge phones, tablets, and other handheld devices in addition to powering your CPAP.

How do I extend the battery's storage life?

Fully charge it before storing, and recharge it at least once every 6 months even if it's not in regular use. Failing to do this can limit future charging capacity or damage the battery.