https://shop.thesleepdoctor.com/products/medistrom-pilot-24-...
You wake up more tired than you started, plus you're sweating and your throat is sore.
Source: have sleep apnea, tried sleeping without my CPAP for two nights (forgot it at home, noticed when I was 200km away and already late). Haven't forgotten it ever since.
Are you able to go camping?
Edit I was measured 120 AHI in the lab (hooked up with a ton of sensors and monitored by someone in the next room) originally - I suspect it's gone down since then as I've lost weight. But for nearly a year before getting tested I was a walking zombie.
Look up most reviews on various "solar generators" and a vast majority of them are about keeping CPAP machines powered during outages, camping or off the grid situations.