I have the ResMed Airsense 11 and it is fantastic. I camp and travel with it all the time. I'll get the mini one if I have extra in my FSA one year, but it isn't a high priority. Would be nicer to travel with, but I never sleep without it, so I just carry the big one everywhere.
I have the USB-C power cord for traveling and camping:
https://amzn.to/49Ks8zWI also have the 12V power cord as backup:
https://amzn.to/4biVpErThe 12V uses less power than the standard 110v plug and the USB-C uses less power than the 12V.
I have multiple items in the Ecoflow battery ecosystem, so my battery powered stuff is their brand.
When I camp, I use the EcoFlow Trail 300:
https://amzn.to/4qEiLcjThe trail is nice, because you can use the USB-C or the 12V. I can get two full nights out of the 12V and three full nights out of the USB-C. The Trail 300 does not have a 110v plug and doesn't have bluetooth or wifi. It is just 12V and USB, so it stays in a smaller form factor and doesn't drain as easily. There is also a trail 200, which has just under 200 watt/hours, but doesn't have 12V.
For flying, I use the EcoFlow Rapid Power Bank:
https://amzn.to/3ZvvS3HThis is 25000mAh or just under 100 watt/hours, which is the max you can take on a plane. I can get over 8 hours on this and I can use the ResMed Airsense 11 on the plane with it. You need a battery pack that can output over 60w and at ramp up it can peak even higher than that, so I use one that can output 100w.
To get the most efficient, you need to turn off the humidifier and use the regular hose, not the heated hose. I use the side cover instead of the water reservoir :
https://www.thecpapshop.com/resmed-airsensetm11-cpap-end-cap-side-cover Slimline (non-heated) tubing:
https://www.thecpapshop.com/slimline-tubing-for-resmed-s9-cpap-machinesLet me know if you have any questions!