Thanks for the tech answer MP.
I still think that Biolite is an interesting idea but just not for this application.

My brother has severe sleep apnea and did the whole overnight sleep video monitoring thing.
He got a copy of the video and it was damn scary. He would stop breathing for so long his face would be pale white, and then he’d snort like a buck and start breathing again. The doctors said one of the reasons (among many) that he was so tired all the time was he was only getting about 2 hrs a night real sleep.

He got the best CPAP they had but couldn’t wear it. He would paw it off during the night. He finally went and got that throat surgery which helped some, and maybe would have ended his issues completely but they wanted him to lose that 75-100 extra lbs he carries to make it more effective but he wouldn't make the effort.

Problem started getting worse, so they finally put a pace maker in him last week.
It’s a version that connects via Bluetooth 24/7 to a monitor at the hospital. The Drs set parameters and IF his heartbeat drops below a certain level it will automatically kick in and give him a micro-jolt and get him breathing right again. Better than nothing but still not as good as it could be IF he lost the weight.

He probably won’t die in his sleep from the apnea, but now he’s prisoner to the range of the device.

Going into the wilderness with that problem would indeed be a scary proposition.