Cpap for extended wilderness camping?

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
lynninnj
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Re: Cpap for extended wilderness camping?

Post by lynninnj » Tue Aug 09, 2022 6:15 am

Richdksu wrote:
Sun Aug 07, 2022 5:30 pm
I’ve been using the Maxoak battery (non FAA) for the past 2 years with my Resmed Airsense 10. I run 4-10 cm and average about 7. I’ve found that setting the humidifier to 1 and tube temp to the low 60s sets me for a comfortable night of sleep here at high altitude locations in Colorado and the West. I usually sleep 6-6.5 hours a night. I can get 3 nights just about guaranteed out of this setup and possibly 4. I think the machine has to work less at higher altitude. The nice thing about the Maxoak of course is that it’s made to output 4 amps at 24v. For anything like a Jackery or Ecoflow you will need an adapting cable. I just bought the Ecoflow River with extra battery mainly to run a fridge, but it could be put into CPAP duty if necessary. These kind of batteries are easier to charge off a 12v car outlet.

Looks like I’m going to take advantage of the Direct Home Medical sale and finally buy an Airmini. I’m guessing it could go a week or longer on these larger batteries. I know there’s some very small batteries that are very expensive and meant to be used with the Airmini. I would eventually like to use this on a kayak.
Perhaps a better way of asking where have been if I wanted to get one that’s already made like a Jackery or Goal Zero or similar , which one would I need to purchase to get a few days out of it?

I don’t think I would to spend $1500. Some of them get pretty pricey.

The fact that the lithium iron phosphate batteries last so long intrigued me also.

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loggerhead12
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Re: Cpap for extended wilderness camping?

Post by loggerhead12 » Tue Aug 09, 2022 10:24 am

lynninnj wrote:
Tue Aug 09, 2022 6:15 am
Perhaps a better way of asking where have been if I wanted to get one that’s already made like a Jackery or Goal Zero or similar , which one would I need to purchase to get a few days out of it?

I don’t think I would to spend $1500. Some of them get pretty pricey.

The fact that the lithium iron phosphate batteries last so long intrigued me also.
You can have ready-made, or cheap, but not both. The out-of-the-box power stations with enough juice are going to cost a bunch.

In your earlier post you mentioned that you needed a home solution that could recharge with solar and that you could take in your car. You can build one with the scooter battery you mentioned for less than $300. It's not hard. Everything is plug-and-play except for screwing the two leads onto the battery, which you only have to do once.

Image

Having said that, I just got back from a trip where I would have loved to have a small battery backup. We spent two weeks in a condo on Bonaire, a tiny island in the south Caribbean. The power would go out every night when it rained, which was every night. Sometimes it would go out 3-4 times per night. A small FAA-friendly battery pack with 5-6 hours of juice between my Aircurve and the wall would have been the perfect solution. The rig above is just too much to fly with.

lynninnj
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Re: Cpap for extended wilderness camping?

Post by lynninnj » Tue Aug 09, 2022 11:13 am

loggerhead12 wrote:
Tue Aug 09, 2022 10:24 am
lynninnj wrote:
Tue Aug 09, 2022 6:15 am
Perhaps a better way of asking where have been if I wanted to get one that’s already made like a Jackery or Goal Zero or similar , which one would I need to purchase to get a few days out of it?

I don’t think I would to spend $1500. Some of them get pretty pricey.

The fact that the lithium iron phosphate batteries last so long intrigued me also.
You can have ready-made, or cheap, but not both. The out-of-the-box power stations with enough juice are going to cost a bunch.

In your earlier post you mentioned that you needed a home solution that could recharge with solar and that you could take in your car. You can build one with the scooter battery you mentioned for less than $300. It's not hard. Everything is plug-and-play except for screwing the two leads onto the battery, which you only have to do once.

Image

Having said that, I just got back from a trip where I would have loved to have a small battery backup. We spent two weeks in a condo on Bonaire, a tiny island in the south Caribbean. The power would go out every night when it rained, which was every night. Sometimes it would go out 3-4 times per night. A small FAA-friendly battery pack with 5-6 hours of juice between my Aircurve and the wall would have been the perfect solution. The rig above is just too much to fly with.
hmm thanks for this. where does solar hook in? Can this also be charged in the wall?

how much time would the 35ah battery above buy on a cpap?

What would be a comparable ready to go commercial product?

Not good with electric math.

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tyrinryan
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Re: Cpap for extended wilderness camping?

Post by tyrinryan » Tue Aug 09, 2022 1:14 pm

loggerhead shows the battery tender hooking into the "splitter" as opposed to clamping directly onto the battery terminals.
With this setup, and presuming that the battery is fully charged to float level (or 13.2v perhaps)-----Do you think the stream of current from the battery tender would flow right into the DC-DC adaptor (and then to the machine) without going through the battery? Would it make any difference if the battery tender wires were clamped onto the battery terminals along with the wires from the DC adaptor being clamped onto the battery terminals as well???

lynninnj
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Re: Cpap for extended wilderness camping?

Post by lynninnj » Tue Aug 09, 2022 1:28 pm

tyrinryan wrote:
Tue Aug 09, 2022 1:14 pm
loggerhead shows the battery tender hooking into the "splitter" as opposed to clamping directly onto the battery terminals.
With this setup, and presuming that the battery is fully charged to float level (or 13.2v perhaps)-----Do you think the stream of current from the battery tender would flow right into the DC-DC adaptor (and then to the machine) without going through the battery? Would it make any difference if the battery tender wires were clamped onto the battery terminals along with the wires from the DC adaptor being clamped onto the battery terminals as well???
My eyes are completely glazed over.

Ready-made is looking better and better lol but no clue how much juice I would need.

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loggerhead12
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Re: Cpap for extended wilderness camping?

Post by loggerhead12 » Tue Aug 09, 2022 3:01 pm

lynninnj wrote:
Tue Aug 09, 2022 11:13 am
hmm thanks for this. where does solar hook in? Can this also be charged in the wall?

how much time would the 35ah battery above buy on a cpap?

What would be a comparable ready to go commercial product?

Not good with electric math.
Solar would hook into the splitter, right where the battery tender is now. The battery tender is what charges the system from the wall in this configuration. Solar would replace that.

On a full charge the 35ah battery gets me 5 nights of 8 hours of sleep with pressures in the mid-teens and heat and humidifier on auto, with a little juice left over so the battery isn't completely discharged. I average 6.3 amp hours or 78 watt hours per night for 8 hours.

One of the nice things about the system is that I can leave it plugged into the wall and my CPAP all the time and power outages don't even wake me up (until the room gets hot from the AC dying).

It looks like Maxoak has a 500wh power station that's around $300, but I have no experience with it. It might be equivalent. You would still need the Resmed dc/dc converter shown in my pic above to plug into the 12v cigarette-style outlet, or you could plug the CPAP into the power station directly using the normal plug and it would be give you about half the run time. The inverter used to power the normal plug is inefficient and wastes a lot of your power.

It really is very easy to put together.

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loggerhead12
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Re: Cpap for extended wilderness camping?

Post by loggerhead12 » Tue Aug 09, 2022 3:07 pm

lynninnj wrote:
Tue Aug 09, 2022 1:28 pm
Ready-made is looking better and better lol but no clue how much juice I would need.
This dude tells you how much juice you would need. You plug it into the wall, plug your CPAP into it, then read the info the next morning.

https://www.amazon.com/gp/product/B08DG ... UTF8&psc=1

lynninnj
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Re: Cpap for extended wilderness camping?

Post by lynninnj » Tue Aug 09, 2022 6:00 pm

loggerhead12 wrote:
Tue Aug 09, 2022 3:07 pm
lynninnj wrote:
Tue Aug 09, 2022 1:28 pm
Ready-made is looking better and better lol but no clue how much juice I would need.
This dude tells you how much juice you would need. You plug it into the wall, plug your CPAP into it, then read the info the next morning.

https://www.amazon.com/gp/product/B08DG ... UTF8&psc=1
Interesting thank you!

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lynninnj
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Re: Cpap for extended wilderness camping?

Post by lynninnj » Tue Aug 09, 2022 6:07 pm

loggerhead12 wrote:
Tue Aug 09, 2022 3:01 pm
lynninnj wrote:
Tue Aug 09, 2022 11:13 am
hmm thanks for this. where does solar hook in? Can this also be charged in the wall?

how much time would the 35ah battery above buy on a cpap?

What would be a comparable ready to go commercial product?

Not good with electric math.
Solar would hook into the splitter, right where the battery tender is now. The battery tender is what charges the system from the wall in this configuration. Solar would replace that.

On a full charge the 35ah battery gets me 5 nights of 8 hours of sleep with pressures in the mid-teens and heat and humidifier on auto, with a little juice left over so the battery isn't completely discharged. I average 6.3 amp hours or 78 watt hours per night for 8 hours.

One of the nice things about the system is that I can leave it plugged into the wall and my CPAP all the time and power outages don't even wake me up (until the room gets hot from the AC dying).

It looks like Maxoak has a 500wh power station that's around $300, but I have no experience with it. It might be equivalent. You would still need the Resmed dc/dc converter shown in my pic above to plug into the 12v cigarette-style outlet, or you could plug the CPAP into the power station directly using the normal plug and it would be give you about half the run time. The inverter used to power the normal plug is inefficient and wastes a lot of your power.

It really is very easy to put together.
Wow! Ok. now you’re talking.

So you have assembled one of these yourself for your own use.

I saw one company had a nice case that looked like a fishing box. I think it came with a lot of that stuff set up already.

Powerwerx PWRbox Portable Power Box for 12-40Ah Lithium Iron Phosphate (LiFePO4) Bioenno Batteries https://a.co/d/hYCkx7W

Not sure if its 100% proprietary but I like the design. Not sure if it checks all the boxes either but I do like the notion of lithium iron phosphate batts. (is that what you have also?)

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loggerhead12
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Re: Cpap for extended wilderness camping?

Post by loggerhead12 » Tue Aug 09, 2022 7:30 pm

lynninnj wrote:
Tue Aug 09, 2022 6:07 pm
So you have assembled one of these yourself for your own use.
Yes. That's my setup above in the picture.
lynninnj wrote:
Tue Aug 09, 2022 6:07 pm
I saw one company had a nice case that looked like a fishing box. I think it came with a lot of that stuff set up already.

Powerwerx PWRbox Portable Power Box for 12-40Ah Lithium Iron Phosphate (LiFePO4) Bioenno Batteries https://a.co/d/hYCkx7W
That's a very nice box. I might buy one if I needed to be portable more often.
lynninnj wrote:
Tue Aug 09, 2022 6:07 pm
I do like the notion of lithium iron phosphate batts. (is that what you have also?)
Nope, standard AGM battery.

Here's the stuff I used.

viewtopic.php?f=1&t=183562&p=1402239&hi ... y#p1402239

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SleepGeek
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Re: Cpap for extended wilderness camping?

Post by SleepGeek » Tue Aug 09, 2022 7:34 pm

loggerhead12 wrote:
Tue Aug 09, 2022 10:24 am
You can have ready-made, or cheap, but not both. The out-of-the-box power stations with enough juice are going to cost a bunch
There is something we do agree on.
lynninnj wrote:
Tue Aug 09, 2022 6:07 pm
Powerwerx PWRbox Portable Power Box for 12-40Ah Lithium Iron Phosphate (LiFePO4) Bioenno Batteries https://a.co/d/hYCkx7W
If I read this right the $129 does NOT include even 1 battery so IMHO that is a bit pricey too.

I put together one similar to that some time back. I got the trolling motor box from Walmart when it was about $59. But everything has gone thru the roof now. This one has 100AH battery in it and is very heavy but never really used it yet. This is for extended outages like during hurricanes, etc.
https://www.walmart.com/ip/Minn-Kota-18 ... /889933865

I Put together a couple more smaller ones using plastic ammo boxes from Harbor Freight.

But my favorites are the ones I bought quite some years back when they were on sale and more affordable. Those are the DieHard 1150's when they went on sale for at times $80 then $90 but I think the last was a little over $100.

I have 3 and only replaced a battery in one over the years. I stay plugged into one every nite. Another helped when mama forgot her AC cord but had the DC cord when we were traveling and she got 3 nites out of it.

Hard to find now and when you do the price is way up there. But check Ebay for them now days to get a price and availability. $329
https://www.ebay.com/itm/363734119717

This is as plug n play as it will get for you lynninnj - unfortunately you may have to find another brand but those seem pretty pricey now too.
viewtopic.php?f=1&t=64943&p=958311&hili ... rd#p958311
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Ray4852
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Re: Cpap for extended wilderness camping?

Post by Ray4852 » Wed Aug 10, 2022 7:18 am

I built 3 portable battery boxes out of the NOCO group 31 battery box. its wired to 3, 15 amp plugs, circuit breakers and a simple volt meeter. these boxes can power a oxygen concentrator, c-pap, 12 volt engel fridge. it will charge all computers and power anything with 12 volt power. USB plugs into the 12 volt socket to charge small computers. if I need the inverter. it plugs into the 12 volt box too. my battery is a lithium 100 amp battle born. I have 3 of them. all batteries are monitored with a victron smart shunt. what's nice about my system. if I need more battery capacity. I can add a bigger battery like the lithium big battery 200 amp. all I do is plug it to the group 31 box with an Anderson 50 amp plug. all batteries are charged with a blue smart 20 amp victron battery charger. for what I paid for my system. its worth it. I built it with quality parts. my battery lays in a group 31 box with the smart shunt. my portable box with the 12 volt plugs and inverter sits in another group 31 box on top of my battery. I plug it to the battery box with a Anderson plug. when its time to charge my battery. I disconnect the Anderson plug from the battery. plug the battery charger with a Anderson plug from the charger. my Yamaha generator supplies my power. I also have solar too. if your handy with electrical. build one yourself. they are much better than those commercial boxes.

lynninnj
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Re: Cpap for extended wilderness camping?

Post by lynninnj » Wed Aug 10, 2022 9:19 am

Ray4852 wrote:
Wed Aug 10, 2022 7:18 am
I built 3 portable battery boxes out of the NOCO group 31 battery box. its wired to 3, 15 amp plugs, circuit breakers and a simple volt meeter. these boxes can power a oxygen concentrator, c-pap, 12 volt engel fridge. it will charge all computers and power anything with 12 volt power. USB plugs into the 12 volt socket to charge small computers. if I need the inverter. it plugs into the 12 volt box too. my battery is a lithium 100 amp battle born. I have 3 of them. all batteries are monitored with a victron smart shunt. what's nice about my system. if I need more battery capacity. I can add a bigger battery like the lithium big battery 200 amp. all I do is plug it to the group 31 box with an Anderson 50 amp plug. all batteries are charged with a blue smart 20 amp victron battery charger. for what I paid for my system. its worth it. I built it with quality parts. my battery lays in a group 31 box with the smart shunt. my portable box with the 12 volt plugs and inverter sits in another group 31 box on top of my battery. I plug it to the battery box with a Anderson plug. when its time to charge my battery. I disconnect the Anderson plug from the battery. plug the battery charger with a Anderson plug from the charger. my Yamaha generator supplies my power. I also have solar too. if your handy with electrical. build one yourself. they are much better than those commercial boxes.

I thought I was reading that with my particular airsense 11 there was no adapter yet and that it uses 24v. From what I have gathered this particular adapter would make the whole thing more efficient if/when it becomes available?

I want to be clear-the more I read the more I think I don't want to blow up my precious new machine and do not trust myself to make my own. Maybe one day I will learn but I have had it a month and it is literally a life saving device for me.

I appreciate all that folks have posted here to help, but am thinking the ready made are probably the way to go.

That said, Rob I think mentioned the Maxoak but did not reply yet as to which one he uses (I am sure he has a busy life but I am hopeful). That looked like they offered several decent options.
I also looked to see what Rav had to offer. I know they make a good product and while they don't make the one he linked anymore they do make these: https://www.ravpower.com/products/copy- ... ower-house

I dont know how it compares to this renogy: https://www.amazon.com/gp/product/B0791WDZTW?th=1 but they appear to have similar specs? which doesnt seem right since the renogy is so much smaller.

So I come back to wanting to know if I can get 2-3 days from any of these, can solar or wall or car charge, and if the type of battery is good. I dont want the lead acid type.

i really want to be ready for winter. We often lose power and sometimes for extended periods. I don't want to lose my lifeline and it makes me very nervous.

Thanks in advance for anyone patient enough with me to respond.

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Ray4852
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Re: Cpap for extended wilderness camping?

Post by Ray4852 » Wed Aug 10, 2022 12:36 pm

I called resmed 3 months ago about the air sense 11 adapter. they said it should be available by the end of 2022. I agree its the best way to go to power the air sense 11 with dc power. for 3 months now I have been using the portable outlet battery. I use this battery just for camping with the air sense 11. I can get one full night with this battery discharging it down to 50 percent. I probably could get two nights use if I keep my sleep to six hours instead of eight hours. I use the slim line hose with air only. I have use it about 30 nights boon docking with it. great little battery. when resmed decides to release this adapter. it won't be cheap. expect to pay over a hundred dollars for it or more.

lynninnj
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Re: Cpap for extended wilderness camping?

Post by lynninnj » Wed Aug 10, 2022 12:42 pm

Ray4852 wrote:
Wed Aug 10, 2022 12:36 pm
I called resmed 3 months ago about the air sense 11 adapter. they said it should be available by the end of 2022. I agree its the best way to go to power the air sense 11 with dc power. for 3 months now I have been using the portable outlet battery. I use this battery just for camping with the air sense 11. I can get one full night with this battery discharging it down to 50 percent. I probably could get two nights use if I keep my sleep to six hours instead of eight hours. I use the slim line hose with air only. I have use it about 30 nights boon docking with it. great little battery. when resmed decides to release this adapter. it won't be cheap. expect to pay over a hundred dollars for it or more.
on the phone with them today and still no word on an adapter.

When I asked about using it with other power back ups the response was “nothing we can recommend”.

Still not helpful lol

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Additional Comments: Newbie who loves her machine!
Beware the schoolyard bullies, mean girls, and fragile male egos. Move along if you can’t be kind.