Snugell Adapter - Universal Tubing Connector Compatible with ResMed AirMini - Fits 15mm & 22mm CPAP Masks - Durable, Travel-Friendly Accessory for Convenient Use Anywhere

Yup. USB-C airmini power adapter. Pair it with any good quality 100wh battery that outputs at least 20V usb PD at 65w and you should be good for 2 nights. Need more nights? bring more batteries. Solar might make more sense if you reach the >1 week mark. (note: There was a few generations of Anker batteries that didn't work for CPAPs for some reason. That was an Anker problem, not an adapter problem) I also use a 4ft tube slimtube with the hose adapter so I can use standard tubing and cheaper generic heat moisture exchangers so I don't need to use humidx pucks for containment i keep it all in a stuff sack inside of a ziplock for waterproofness. I also made a beer-coozie type container for my air mini unit made of reflectix bubblewrap. But I did that because I went bikepacking and I wanted to protect it from vibration. I don't think it matters for backpacking. Battery life for USB-batteries is temp dependent, so when it's cold you should keep the battery in your bag with you or I tried putting it in my coozie. I think it worked ok. Turn off bluetooth too. I don't know how much power it wastes, but it wastes power. Disconnect the power adapter unit when not using it. There is a small parasitic draw from the adapter at all times because it is converting 20v to 24v. I believe my setup weighed in the 4lb range all told. It's not ultra-light but also not totally prohibitive.