Camping with a CPAP machine is entirely doable with the right power source and a few adjustments to your setup. The biggest challenge is electricity: most CPAP machines draw 30 to 60 watts on their own, and adding a heated humidifier bumps that to 50 to 100 watts. That means you need to plan your power supply carefully, but thousands of CPAP users camp regularly once they figure out what works.
Choosing a Power Source
If your campsite has electrical hookups, you can plug in your CPAP just like at home. For off-grid camping, you have three main options: a portable lithium power station, a deep-cycle lead-acid battery, or solar panels paired with a battery.
Portable lithium power stations are the most popular choice for CPAP camping. They’re lightweight, quiet, and come in a range of capacities. A standard CPAP without a humidifier uses roughly 240 to 480 watt-hours per night, so a 500Wh power station can typically get you through one or two nights. If you use a heated humidifier, expect to need 400 to 800 watt-hours per night, which means you’ll want an 800 to 1,000Wh unit for a single night of reliable power.
Deep-cycle lead-acid batteries hold more total energy but are heavy and bulky, making them practical only if you’re car camping and don’t mind the extra weight. For backpacking or any situation where you’re carrying gear a distance, lithium is the clear winner.
DC Power Cords Save Battery Life
One of the most impactful things you can do is use a DC-to-DC power cord instead of running your CPAP through the battery’s AC inverter. Portable power stations store energy as DC power. When you plug in a standard AC cord, the inverter has to convert that power, and conversion wastes energy. Real-world testing from CPAP users has shown that running a machine on DC power can double battery life compared to AC. For a multi-night trip, that’s the difference between packing one battery and packing two. Most major CPAP manufacturers sell DC adapter cords specifically for their machines, and many portable power stations have 12V DC outlets built in.
Travel CPAPs vs. Standard Machines
If you camp frequently, a dedicated travel CPAP is worth considering. The ResMed AirMini weighs just 10.6 ounces and measures about 5.4 by 3.3 by 2.1 inches. The Human Design Medical Z1 is even lighter at 10 ounces. These units draw less power than full-size machines, which stretches your battery further.
Travel CPAPs are also very quiet, a real advantage when you’re sleeping in a tent a few feet from other campers. The tradeoff is that most travel units have limited or no built-in humidification, and they cost extra on top of whatever you already paid for your home machine. If you only camp once or twice a year, bringing your standard unit is perfectly fine.
Handling Humidification in the Field
Humidification is the trickiest part of CPAP camping. Your heated humidifier is the single biggest battery drain, and it also requires distilled water, which isn’t something you’ll find at a campsite.
You have a few options. The simplest is to turn off the humidifier entirely. Many people tolerate a few nights without it, especially in humid climates. If dry air bothers your nose and throat, pack small containers of distilled water (they sell them in gallon jugs at most grocery stores and pharmacies). Do not use lake, stream, or filtered water in your humidifier. Even water that’s been treated for drinking can contain minerals that damage your equipment and introduce irritants into the air you breathe.
A waterless humidifier, also called a heat and moisture exchanger, is another option. These small devices attach between your mask and hose and recycle the warm moisture from your own breath. They add no power draw and require no water, making them ideal for backcountry trips.
Preventing Condensation in Cold Weather
When you use a CPAP in a cold tent, warm humidified air can cool inside the tubing before it reaches your mask. The moisture condenses into water droplets that collect in the hose and occasionally splash your face. CPAP users call this “rainout,” and it’s one of the most common complaints about cold-weather camping with a machine.
A heated tube is the most effective fix. Heated tubing maintains the air temperature all the way from the machine to your mask, preventing condensation from forming. If your machine doesn’t support heated tubing, a tubing wrap or insulating jacket does the same job passively by keeping the hose warm. You can buy purpose-built wraps or improvise with a tube sock or fleece sleeve. Keeping the CPAP on or near your sleeping pad, rather than on cold ground, also helps maintain consistent temperatures.
Adjusting for Altitude
If you’re camping at elevation, air pressure drops, and that affects how much pressure your CPAP actually delivers. Many modern machines compensate automatically. ResMed’s auto-adjusting models, for example, are rated to self-correct up to 8,000 feet. If your machine has auto-adjusting mode, turn it on before your trip. If you use a fixed-pressure machine and plan to camp above 5,000 feet, talk to your equipment provider before the trip about whether your prescribed pressure needs adjustment.
Keeping Your Equipment Clean
Without a sink and running water, daily cleaning gets harder. CPAP wipes are the practical solution. They’re individually wrapped, take up almost no pack space, and let you wipe down your mask, cushion, and tubing connections each morning. They’re not a full substitute for soap and water, but they keep oils, bacteria, and moisture from building up over a multi-day trip. Pack enough individual packets for each day, plus a couple of extras.
When you get home, do a thorough cleaning of everything: mask, headgear, tubing, and water chamber if you used one. Warm water and mild dish soap is all you need.
Packing Checklist for CPAP Camping
- CPAP machine (travel or standard)
- DC power cord for your specific machine model
- Portable power station sized for your trip length and humidifier use
- Solar panel (optional, for recharging during the day on longer trips)
- Distilled water in sealed containers if using a humidifier
- Tubing wrap or heated hose for cold-weather trips
- CPAP wipes, one per day minimum
- Dry bag or padded case to protect the machine during transport
- Extension cord if your campsite has hookups but the outlet is far from your tent
Planning for Multi-Night Trips
For a single overnight, almost any portable power station over 300Wh will work if you skip the humidifier and use a DC cord. The math changes fast on longer trips. A three-night trip without a humidifier needs roughly 720 to 1,440 watt-hours total, depending on your machine and pressure settings. That’s a large, heavy battery or two medium ones.
Solar panels can offset this. A 100-watt panel in direct sunlight for five to six hours generates roughly 400 to 500 watt-hours, enough to partially or fully recharge a mid-size power station during the day while you’re hiking. The key is positioning the panel in direct sun and having enough daylight hours, which makes solar more practical for summer trips than late-fall camping. Pair a solar panel with a 500Wh power station and you can reasonably sustain a CPAP indefinitely in good weather, as long as you skip or limit the humidifier.
Test your entire setup at home before your first trip. Run your CPAP off the battery for a full night with the settings you plan to use. You’ll know exactly how much capacity you burn and whether your battery can handle the duration. There’s no worse surprise than a dead battery at 3 a.m. in the woods.