After delaying as long as possible I faced the night of camping with a CPAP. Since I had a big ass battery I might as well use all the CPAP’s features. (I did run the CPAP off a 12v plug in instead of it’s regular AC plug. They say it reduces battery consumption to avoid the AC conversion. I’ve verified that is true.)
Night was colder than expected. The temp dropped probably 40 degrees. Snug in my sleeping bag I didn’t care.
The CPAP cared. It pulled in air, humidified it, then pushed humid air through a hose exposed to 45 degree conditions. That exceeded the hose’s heating capacity. It became filled with condensed water. People with more CPAP experience apparently call this a “rainout”.
It’s not fatal, but it’s annoying as hell. First it made dumb sounds, just enough to make me half awake. Then it spewed water all over my face! Nobody can sleep through that! It sucked being all wet and the hose kept making gross gurgling noises! Water was all over my sleeping bag. It was in my hair and all over the tent. It was like a thirty foot Labrador Retriever had ducked into the tent and slobbered on me.
It was condensed distilled water, the cleanest water ever to get thrown in my face. But I’ve had better nights.
I set the heated hose to a higher setting and the humidity to a lower setting. I cleared out the hose (which spilled even more water on everything) and tried to go back to sleep. I fell asleep. I’d solved it! Nope. Two hours later the Labrador Retriever of doom returned.
Dammit! I sat there in the bad lighting of a flashlight trying to dry off and tweaking CPAP settings. Then I heard the neighbors launch into commotion. I heard someone say “Eek, a raccoon!” The exact words I’d imagined. You can’t make this shit up! Other voices joined the commotion. There was the clatter of a campsite being hastily cleaned. I felt pretty smug. I keep a clean camp. All my food is locked in a raccoon proof (not bear proof) cooler or a Milwaukee Packout that could stop a rhino.
I felt smug about my clean camp, and that I’d been willing to go full Thunderdome on raccoons. I like to think that’s why they left me alone. (It’s not, but it’s a nice thought.)
I drifted off to sleep. Then the hose did another “rainout”. Now I didn’t feel smug about anything. It happened several times in the night.
This is probably a good thing. Just as I’m touchy about the CPAP, I’m uptight about sleep. Most people accept that an occasional bad night’s sleep is no big deal. I was that way myself for my whole life until I wasn’t. Last year it got in my head that if I miss a nights sleep I’ll rebound into a state somewhere on the spectrum of between death and exhaustion. Mock me if you want but we’re made by the things we experience. I ain’t afraid to throw down with a raccoon but missing sleep had me worried.
The point is, I got up sleepy and unrested at the ass crack of dawn and… nothing. I was fine. Like a normal healthy person.
Wow! I don’t know what I was expecting, but mildly groggy was better than all imagined outcomes. I was almost giddy with relief. That’s what recovery is all about!
I forgot the brats but sure as hell didn’t forget the coffee. While that was percolating I found out I’d also forgot my toothbrush and toothpaste. In the chuckbox, I found dehydrated toothpaste pellets and a travel toothbrush. They worked fine. I think I tossed that junk in there in 2024? Past me was a stand up guy!
I percolated several cups of coffee and drank them happily. Then I tried to go back to bed and sleep a bit more. I was defeated by another “rainout”. The CPAP was self identifying as a lawn sprinkler. I thought about the guys motocamping. I have things to figure out with the CPAP before I can go motocamping.
No complaints, it is what it is. Rather than sit there all moody, I cooked half my bacon and eggs. Delicious. The rest I saved for later.
After that it was time for a new gadget test. I’d borrowed a cellular WiFi hotspot and was (uncommon for me) camping in geography with (weak) cell service. I turned it on, then turned on my old decrepit MacBook Air that’s now a Linux box. This was going to be awesome! It wasn’t. The WiFi hotspot didn’t give me internet. My cell phone can be a WiFi hotspot too but I don’t like to use it too much. However, it did work. Different carriers? I used my old cracked iPad to post a short message to my blog. It was proof of concept if nothing else.
I was looking forward to another advantage of campgrounds over dispersed camping. This campground (like most) has showers. How civilized! More dumb mistakes ensued. I forgot to pack soap. I forgot shampoo. I had a towel and that’s the only thing my dumb ass had remembered. I stood under the water and called it good. Getting sprayed with water was the theme of this trip.
With my CPAP’s heater and humidifier running as normal but also air leaks and general mayhem, I’d used a lot of battery. I was at 53%. In theory, anything over 50% means I’d done one day and was set for a second day. But 53% is too close!
I have a 12v charge line for my battery box. I plugged it in to the cigarette lighter of my truck. The truck pushes 20 amps, the box pulls 10 amps. So long as I run the motor, it’ll be fine. It was already lunchtime so I set out to drive to a burger place for lunch. Then I remembered I’m broke. I’m not complaining, I made decisions I don’t regret but which do have repercussions. There was no burger budget.
I really wished I had those brats! Instead of the longer trip to a country bar I made a short one to the nearest (and only) gas station / convenience store. When I stopped, the charge cable felt warm to the touch. That’s not good. I unplugged it. I was at 56%.
I bought a pack of brats and an ice cream sandwich. Nine bucks total. Frugal me! I started the truck and plugged the line back in but now it wouldn’t charge. Did I fry my truck’s cigarette lighter? Seems like I might have.
I’d only reserved the campsite for one night. I’d planned all along to extend another night but hadn’t committed until I’d found food and verified I had slightly more than half a battery left. OK Curmudgeon, lets try a second CPAP camping night.
More in part 5.
For what it’s worth, I had the same results with my CPAP. I had my wife sew up a tubular cover for the hose, out of heavy fabric. Kept the heat in and all but eliminated the condensation.
I just bought exactly that sort of thing. Will test it as soon as I get a chance.
AC: I’m sure you are aware, but for those readers who aren’t. Your battery’s lifespan will be maximized when kept between 20% and 80% of a full charge “according to experts”. I, of course, immediately accidently flat-lined my brand new LiFePO; it was never the same after that. Brand new. First use. Sigh.
My car’s cigarette lighter, excuse me, power port, is fused at ten amps and yeah, the charge cord gets way too hot. C’mon, manufacturers, give us wires big enough for the real world, ya greedy bahstids! Good luck.
I’ve yet to use my CPAP outside where the humidity is thick enough to cut with knife. I should probably do a sleepout in my backyard (or at least truck bed) and see what kind of night sleep can I expect.
Thanks for the post – illuminating and definite teaching moment.
Glad you’re learning along with me. It’s definitely “do-able” but it seems like I need a bit of experience to get the hang of things.
I’ve already started prepping for my next “test”. I got a fabric insulation tube that wraps around the hose and tested that in the house. I also ordered a “side cover” that blocks out the humidifier feature. Nothing are cheap. Together they might help a lot.
Would maybe a couple of wraps with bubble wrap sheeting have the same effect ? Flexible, re-usable, lightweight and often comes free in packaging from purchases. Just spit-balling here ….
It doesn’t get nearly as cold here as there, but winter temps can get into sub 50’s fairly easily. And if front brings rain, humidity will be present. So I may have that same condensation form in my mask – tube used outside.
I’m sure bubble wrap would do the same thing as a hose insulator tube but I already have the insulator. It was very reasonably priced. The hose insulator has a second purpose too. A few weeks ago our cat bit Mrs. Curmudgeon’s CPAP hose and pierced it (pissing off Mrs. Curmudgeon mightily!). I’d never heard of such a thing but many of the reviews of hose insulation mentioned that cats can’t bite through it. I think the cat thing is a thing that happens a lot more than I knew! If the hose insulation doesn’t cause me hassles I’ll buy a second for Mrs. Curmudgeon as cat armor.
80 A/H per hour here. Used to backpack with mine. Old CPAP with detachable tank (left at home), 12V AGM battery out of a UPS, small solar panel on the backpack, homemade insulated hose cover and some motorcycle-style power connectors. CPAP outside the sleeping bag, unheated hose inside the bag with me, never a rainout. I live in lower humidity clime, but even in the tent in the rainy season or in sub-zero snow camps I did okay. Just heavy. Little bottle of saline spray for dry nostrils keeps the nosebleeds at bay.
In my 15th year as a 100% “user” I find a chin strap is effective at preventing those nights where the leaks are inexplicably frequent. YMMV.
That’s good info! I’ve already acquired a “hose insulation tube” (it was cheap) and that might do the trick with rainout. Plus I ordered up a “side cover” that’s a “bypass” for the detachable humidity tank. It was pretty cheap too. The two should do a lot toward reducing rainout. I’m not sure if rainout was my only problem or if I need to tweak my sleeping system. I’ll try again in a few weeks.