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Anyone know the best CPAPs for dry camping?
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Ailu Offline

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Post: #1
Question Anyone know the best CPAPs for dry camping?
Hubby & I go boondocking quite a bit with our trailer, so I know I'll be looking for a CPAP machine that doesn't use up a lot of power. It'd be great if it was also compact, but it's not a necessity. Anyone have knowledge or experience on dry camping with a CPAP?

I also have to take into consideration that based on my sleep lab report and how my titration study goes, I may need a ASV. Forgive my ignorance, but I am not sure if that's a totally different type of machine, or just a CPAP machine that is "ASV" capable. That being said...

1) If I don't need an ASV - what are the best options out there for a multifunction CPAP that uses less power?

2) If I do need an ASV - what exactly is it? And are my options?

Thanks for any and all advice offered! Smile

-Ailu
Reformed CPAP Outlaw
(This post was last modified: 06-12-2015 01:42 PM by Ailu.)
06-12-2015 01:42 PM
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lmoretti Offline

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Post: #2
RE: Anyone know the best CPAPs for dry camping?
I had a thread here last week asking about camping and CPAP. ASV (Auto-Servo Ventilation) machines will likely need more power than a straight CPAP. Power requirements also vary with your needed pressure.

Here's what the end results were:

If you have no weight limitations, the easiest way to go is a PR System One machine and a 12 volt deep cycle AGM marine battery. Run the humidifier on "pass over" mode or just take it off if you can. Depending on your pressure, a PR System One can be as little as 0.3AH/hr to 1AH/hr. Lead acids can cheaply (~$100) get you 50 AH of power, which should be good for 5-10 days depending.

Resmed systems run on 24v power supplies, so you'd need an adapter for them to run off most batteries.

If weight is an issue, you're going to want to look at the Lithium Iron Phosphate batteries. They are drop-in replacements for 12v lead acid batteries but are MUCH lighter. Make sure to get Deep Cycle, not starter batteries. A 10AH one will run you about $150 shipped, depending. They're under 4lb though and will likely get you 2 nights of operation. Make sure to disconnect the machine when not in use so you don't waste battery when not sleeping. An inline switch may be a good option. Prices spike FAST for higher AH LiFeSO4 batteries.

You'll still need a charger and a power source for charging the batteries. You can charge off Solar panels, but I have no clue how many panels you'd need to top off the battery during the day enough to compensate for your use at night.

Otherwise, just search for "camping" and you'll find quite a few threads.
06-12-2015 03:11 PM
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Ailu Offline

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Posts: 159
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Machine: Philips Respironics System One (60 Series) RemStar Auto with A-Flex
Mask Type: Nasal pillows
Mask Make & Model: Fisher Paykel Pilairo Q
Humidifier: System One Heated
CPAP Pressure: Auto-CPAP: 8-9
CPAP Software: SleepyHead EncoreBasic

Other Comments:

Sex: Female
Location: Sierra Nevada Mountains

Post: #3
RE: Anyone know the best CPAPs for dry camping?
Wow thanks lmoretti for all the great info! Apologize for missing your thread on this earlier.

Right, I really have no weight limitations, just concerned about power usage. Thank you for helping me realize that a ResMed machine just wouldn't work for me, because of this. So I'll be looking to go with a PR system One.

Just had my Titration study last night, so I won't know if I'll need a ASV machine until another week or so, when I get the results. If there's no ASV that will work for 12 volt, we'll have to choose plug-in campgounds, which would take a lot of the fun out of camping, bcause we enjoy remote boondocking the best. Sad


(06-12-2015 03:11 PM)lmoretti Wrote:  I had a thread here last week asking about camping and CPAP. ASV (Auto-Servo Ventilation) machines will likely need more power than a straight CPAP. Power requirements also vary with your needed pressure.

Here's what the end results were:

If you have no weight limitations, the easiest way to go is a PR System One machine and a 12 volt deep cycle AGM marine battery. Run the humidifier on "pass over" mode or just take it off if you can. Depending on your pressure, a PR System One can be as little as 0.3AH/hr to 1AH/hr. Lead acids can cheaply (~$100) get you 50 AH of power, which should be good for 5-10 days depending.

Resmed systems run on 24v power supplies, so you'd need an adapter for them to run off most batteries.

If weight is an issue, you're going to want to look at the Lithium Iron Phosphate batteries. They are drop-in replacements for 12v lead acid batteries but are MUCH lighter. Make sure to get Deep Cycle, not starter batteries. A 10AH one will run you about $150 shipped, depending. They're under 4lb though and will likely get you 2 nights of operation. Make sure to disconnect the machine when not in use so you don't waste battery when not sleeping. An inline switch may be a good option. Prices spike FAST for higher AH LiFeSO4 batteries.

You'll still need a charger and a power source for charging the batteries. You can charge off Solar panels, but I have no clue how many panels you'd need to top off the battery during the day enough to compensate for your use at night.

Otherwise, just search for "camping" and you'll find quite a few threads.

-Ailu
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06-13-2015 08:04 PM
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Mark Douglas Offline

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Sex: Male
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Post: #4
RE: Anyone know the best CPAPs for dry camping?
What is dry camping?
Every time I ever went camping it rained cats and dogs!

I use my PAP machine nightly and I feel great!
Updated: Philips Respironics System One (60 Series)
RemStar BiPAP Auto with Bi-FlexModel 760P -
Rise Time x3 Fixed Bi-Level EPAP 9.0 IPAP 11.5 (cmH2O)
06-14-2015 12:36 PM
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lmoretti Offline

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Post: #5
RE: Anyone know the best CPAPs for dry camping?
You can buy 12V adapters for Resmed Machines, it's just an extra cost and variable in the mix that's going to steal some power from your battery, reducing the amount of time you have. If you're running a beefy 100AH+ battery it's probably not a big deal, but if you're trying to squeeze the most time out of a small <5lb battery it may be an issue.
06-15-2015 10:31 AM
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justMongo Offline

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Post: #6
RE: Anyone know the best CPAPs for dry camping?
Def: Dry Camping is taking the trailer to a site with no hookups -- no water, electricity, no sewage hookup.

Ailu: I assume you intend to sleep in the trailer; and run your CPAP off a battery that supplies power to the trailer.
Likely a deep cycle, lead-acid 12 Volt Battery. If so, I think you are essentially set.

I would make sure that battery is big (in terms of Amp-Hrs); fairly new; and independent from the tow vehicle.
To conserve power, you may need to run without humidity.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
06-15-2015 11:39 AM
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Ailu Offline

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Posts: 159
Joined: Oct 2013

Machine: Philips Respironics System One (60 Series) RemStar Auto with A-Flex
Mask Type: Nasal pillows
Mask Make & Model: Fisher Paykel Pilairo Q
Humidifier: System One Heated
CPAP Pressure: Auto-CPAP: 8-9
CPAP Software: SleepyHead EncoreBasic

Other Comments:

Sex: Female
Location: Sierra Nevada Mountains

Post: #7
RE: Anyone know the best CPAPs for dry camping?
Thanks JustMongo! We have two 6 volt batteries in our trailer, fairly new too. I'm wondering how much of a drain would a PR System One put on it, running the whole night (w/o the humidifier on)... If we are minimalists regarding other electrical items, would a few solar panels be able to keep up with it? Or would we definitely need to run a generator a few hours a day?

-Ailu
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06-15-2015 12:03 PM
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lmoretti Offline

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Machine: PR System One 60 with AFlex
Mask Type: Nasal pillows
Mask Make & Model: Resmed P10
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CPAP Pressure: 9
CPAP Software: SleepyHead

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Sex: Male
Location:

Post: #8
RE: Anyone know the best CPAPs for dry camping?
Well, to extend above:

If you need 10AH of power per night, you'd need to change the same amount during the day. 10AH/8H charge time = ~1.25Amps. 1.25A * 12V = 15 Watts. You can buy 15 Watt panels from Harbor Freight for ~$70. I'd buy at least two, as you're going to be dealing with cloudy days and not be able to reach 100% efficiency even on sunny days. If you go with a large lead acid battery (50-100AH) and 2-3 solar panels you should be able to keep the batteries charged long term for extended camping trips.

Unfortunately, it's going to involve some experimentation as actual real world efficiency is hard to calculate and there are lots of variables.

HF also sells a 45 watt kit that looks fairly complete (3 panels, charger, etc) for $190. Add a Marine battery and you'd probably be good. Much better deal than buying the panels yourself and then figuring out the electronics.
06-15-2015 01:37 PM
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justMongo Offline

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Post: #9
RE: Anyone know the best CPAPs for dry camping?
100 Watt panels with a PWM charge controller can be obtained for less than US $200.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
06-16-2015 04:49 AM
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Mark Douglas Offline

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Posts: 513
Joined: Apr 2015

Machine: Sys 1 (60) RemStar BiPAP Auto with Bi-Flex 760P Auto Bi-Level (Variabl
Mask Type: Nasal mask
Mask Make & Model: PR Wisp
Humidifier: PR Sys One heated
CPAP Pressure: RiseTime 3 Fxd E-9.0 / I-11.5
CPAP Software: SleepyHead EncoreBasic

Other Comments: Hashimoto's thyroiditis.

Sex: Male
Location: SW Ohio

Post: #10
RE: Anyone know the best CPAPs for dry camping?
(06-15-2015 01:37 PM)lmoretti Wrote:  Well, to extend above:

If you need 10AH of power per night, you'd need to change the same amount during the day. 10AH/8H charge time = ~1.25Amps. 1.25A * 12V = 15 Watts. You can buy 15 Watt panels from Harbor Freight for ~$70. I'd buy at least two, as you're going to be dealing with cloudy days and not be able to reach 100% efficiency even on sunny days. If you go with a large lead acid battery (50-100AH) and 2-3 solar panels you should be able to keep the batteries charged long term for extended camping trips.

Unfortunately, it's going to involve some experimentation as actual real world efficiency is hard to calculate and there are lots of variables.

HF also sells a 45 watt kit that looks fairly complete (3 panels, charger, etc) for $190. Add a Marine battery and you'd probably be good. Much better deal than buying the panels yourself and then figuring out the electronics.

Better deals elsewhere. Sorry but not gonna risk the commercial link chewing.

I use my PAP machine nightly and I feel great!
Updated: Philips Respironics System One (60 Series)
RemStar BiPAP Auto with Bi-FlexModel 760P -
Rise Time x3 Fixed Bi-Level EPAP 9.0 IPAP 11.5 (cmH2O)
06-16-2015 10:58 AM
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