ResMed AirSense 10 / Lumis 12V DC Converter

The ResMed 12V DC Converter (part #37506) lets you run your ResMed AirSense 10 or Lumis CPAP/BiLevel machine from any 12V DC power source — most commonly a car or boat cigarette lighter socket. It's a 65W converter that steps the vehicle's DC voltage to what your CPAP needs, so you can continue therapy on road trips, caravan holidays, or onboard a boat without 240V mains.

What It's For

This converter is designed for direct vehicle-to-CPAP operation — connect it to a 12V outlet, plug your AirSense 10 or Lumis into the output, and run the machine while the vehicle's electrical system is live. If you instead want a portable backup battery you can use anywhere (including on a plane), see the Medistrom Pilot-24 Lite. For more travel tips, see our CPAP travel guide.

How to Use It

1. Plug the converter's cigarette-lighter plug into your vehicle's 12V DC outlet.
2. Connect the converter's output cable to your AirSense 10 or Lumis.
3. Ensure the accessory power circuit is live, then turn on your CPAP as normal.

Most modern vehicles supply DC power to the cigarette lighter with the ignition turned to "accessory" or with the engine running. Some vehicles cut power when the engine is off — check your owner's manual if you plan to run your CPAP while parked.

Need to Power It From a Battery?

If you want to use this converter with an auxiliary battery (such as a caravan deep-cycle battery) rather than a cigarette lighter socket, the Narva Battery Adapter Leads and Socket gives you alligator clips that connect directly to a 12V battery's terminals.