Cpap revisited…. May 26, 2022, 09:14:19 am I am still uncertain of powering my cpap off grid, after extensively combing though the forum topics. Googling off grid cpap use, etc. I have a ResMed Airsense 11 auto set. It has a 24v output, not 12v. The rig has 200w of solar. I also have an accessory 200w inverter. I travel off grid most of the time, rarely have hook ups. The more I research I do, the more confused I become. Thanks
Re: Cpap revisited…. Reply #1 – May 26, 2022, 09:59:10 am We’ve used this successfully DC Adapter Car Charger for ResMed Airsense 10I would expect there is a similar one out there for the newer ResMed Airsense 11. As an Amazon Associate Lazy Daze Owners' Group earns from qualifying purchases.
Re: Cpap revisited…. Reply #2 – May 26, 2022, 11:17:58 am Unfortunately, there is no DC adaptor available for the Airsense 11. It has a 24v output, not 12v. I need a converter. I'm unsure of whether or not I need a separate rechargable battery. Would my house batteries and solar panels be able to recharge the accessory battery? Or, can i just use my inverter, and plug the cpap into that?
Re: Cpap revisited…. Reply #3 – May 26, 2022, 11:39:13 am You can certainly plug your AirSense 11 AutoSet's AC adapter into an inverter. It's not the most efficient way of powering it, but it will work.However, the KFD 12 VDC Adapter that Dave suggested should work. Its specifications say that it outputs 24 VDC at 3.75 A for a maximum of 90 W. On page 22 of the AirSense 11 manual, it says that its included AC adapter outputs 24 VDC at 2.71 A, and that the AirSense 11 has a peak power consumption of 73.2 watts. Therefore Dave's KFD DC Adapter can supply more than enough power at the correct voltage.And it should be more efficient than using an inverter, in which case you'd be converting 12 VDC to 120 VAC, then reconverting it to 24 VDC with the AutoSense 11's power brick."I'm unsure of whether or not I need a separate rechargable battery. Would my house batteries and solar panels be able to recharge the accessory battery?"They could, but I don't see any reason for a separate battery, unless perhaps you plan to go tent camping and take your CPAP with you. Your Lazy Daze has a powerful house battery/solar system, so it makes sense to use that.Incidentally, your AirSense CPAP uses very little power if you don't turn on the humidifier and heated hose. With the humidifier off, I measured the following with my AirSense 10, and I'd be surprised if the AirSense 11 were significantly different:0.3 A at 12 V (without hose heat), 4.5 A (hose heat @ 75° F.)I spend most of my time in the arid Southwest, and I haven't used the humidifier in years. If you can get along without it, the CPAP will have a minimal impact on your overall energy usage. As for the heated hose, I use it a few times in winter, but 98% of the time I don't find it necessary. Your comfort levels will probably differ, but it's worth experimenting to see what works for you.
Re: Cpap revisited…. Reply #4 – May 26, 2022, 11:50:05 am I've spoken to ResMed, and cpap.com. They both insist that the ResMed 10 DC adaptor will not work with the 11. ResMed has no release date for the DC adaptor for the 11. The 10 has a barrel plug, whereas the 11 has what resembles a HDMI connection. 1 Likes
Re: Cpap revisited…. Reply #5 – May 26, 2022, 01:19:06 pm ResMed won’t bless this officially but this should work for you AirMini 65W DC/DC adapter 1 Likes
Re: Cpap revisited…. Reply #6 – May 26, 2022, 01:46:52 pm "The 10 has a barrel plug, whereas the 11 has what resembles a HDMI connection."Aaarrrggghhh. They would. Why use a standard barrel power connection when you can do something proprietary? Grrr. Here's a link to the AirMini adapter on Amazon. As an Amazon Associate Lazy Daze Owners' Group earns from qualifying purchases.
Re: Cpap revisited…. Reply #7 – May 27, 2022, 09:08:22 pm Hello Jon here, I highly recommend the MAX Oak battery for off grid camping , this will last you about 4 nights of sleep no problems. It costs about $300 on Amazon however, it is a life saver and well worth the money!!. I pair this with my Resmed Airsense 10, here are some pics, hope this helps.😊
Re: Cpap revisited…. Reply #8 – May 27, 2022, 10:15:41 pm Great idea Jon, however OP’s problem is ResMed, in their infinite wisdom changed their connector in the back of their new ResMed Airsense 11 when they released it last year and STILL have not come out with a 12 volt connection adapter.It’s one thing to change the plug, but to not release a cigarette plug adapter at the same time is shameful. 1 Likes
Re: Cpap revisited…. Reply #9 – May 29, 2022, 07:23:52 am Here's an idea before buying a CPAP make sure it's 12V. Then you can direct wire it into the chassis battery. No adaptors, no inverters.
Re: Cpap revisited…. Reply #10 – May 29, 2022, 02:19:23 pm ResMed Airsense 11 battery backup | Apnea BoardIt appears the AirMini adapter works.******************Sorry, I didn't see the previous thread before I responded. Amending: Yes, don't buy a CPAP that doesn't support 12v AND there is a cable available to run 12v (AirSense 11/12 - what were you thinking?). That said, it looks like the AirMini 12v adapter would also power the AirSense 11.Amazon.com: 65W AC DC Adapter Converter Compatible with ResMed AirMini...Can anybody confirm?======================================You are meaning the CPAP can run directly off of 12v, when not using the bulky transformer for 120 volts?And then you can buy a cord, specifically for your make/model that plugs into cigarette lighter style outlet, or hardwire using cords shown below?Like...Dreamstation 12V Power Adapter,HKY DC Power Cord for Philips Respironics... As an Amazon Associate Lazy Daze Owners' Group earns from qualifying purchases.
Re: Cpap revisited…. Reply #11 – May 29, 2022, 03:40:41 pm Here's my take: the most important thing is to get the best CPAP. That's my top priority. It's my health at stake, after all. Yes, 12 V operation is important for me, since I do a lot of boondocking. But given a choice between a mediocre CPAP that runs on 12 V without an adapter and a topnotch one that requires an adapter, I'll choose the latter.Before buying a CPAP a few years ago, I read a bunch of reviews and talked with a retired professional respiratory therapist, and the consensus was that the ResMed AirSense 10 AutoSet was the best unit on the market. But hedging my bets, I actually bought two CPAPs: a then-current Respironics model (M9, I think) and a ResMed AirSense 10 AutoSet. I tried both, and the AirSense 10 was the clear winner both for ease of use and for its Autoset feature. In addition to functioning flawlessly, it's one of the best-designed pieces of consumer equipment I've ever seen. I don't mean design as in style, I mean the way it's operated. The user experience is simple and clear, and the AutoSet feature, which adapts to one's needs, means there's little or no need for adjustment. Sure, I had to buy an adapter to power it from 12 VDC. But that was minor compared to having the best CPAP for my needs.(I sold the Respironics model.)
Re: Cpap revisited…. Reply #12 – May 30, 2022, 06:56:21 am Best CPAP? One that puts my AHI number below 3 is good enough for me and my doctor.Plus it works on 12V.We have been running two the last few years.
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