Choosing a Battery

JHC wrote: ↑

Fri Jun 11, 2021 10:26 pm

Of the mistakes listed above, the only one I may have been making is not using Airplane Mode. I assume that means disabling the cell phone connection. How do you do that?

No need to physically do anything to disable the cell phone connection thing.
To use airplane mode all you have to do is turn it on in the clinical setup menu area.....there is a menu choice for that mode.
I have my doubts as to how much energy it will save though....but wouldn't hurt to give it a try.

Do you know how to get to clinical setup menu area where you can turn airplane mode on?
Explained in the manual if you don't know how.
https://www.respshop.com/manuals/ResMed ... %20her.pdf

I've got the ResMed 12 volt conversion kit that I use to run my ResMed 10 off a huge, heavy deep cycle marine battery during power outages. I'd like to use the same setup for camping with a lighter 35 ah AGM battery. Rather than the standard post battery terminal posts they have a flat square terminal with a hole in it. Will the alligator clip connectors on the ResMed kit work with that type connector or do I need some type of converter for the terminals?

Any advice is appreciated!

Bubba in NC wrote: ↑

Sat Jun 26, 2021 10:09 pm

Rather than the standard post battery terminal posts they have a flat square terminal with a hole in it. Will the alligator clip connectors on the ResMed kit work with that type connector or do I need some type of converter for the terminals?

Yes. It's what I use.

ChicagoGranny wrote: ↑

Sun Jun 27, 2021 5:59 am

Bubba in NC wrote: ↑

Sat Jun 26, 2021 10:09 pm

Rather than the standard post battery terminal posts they have a flat square terminal with a hole in it. Will the alligator clip connectors on the ResMed kit work with that type connector or do I need some type of converter for the terminals?

Yes. It's what I use.

Thanks!

JHC wrote: ↑

Fri Jun 11, 2021 10:26 pm

Of the mistakes listed above, the only one I may have been making is not using Airplane Mode. I assume that means disabling the cell phone connection. How do you do that?

Have you considered simply unplugging the cpap when you are done sleeping?

Bubba in NC wrote: ↑

Sat Jun 26, 2021 10:09 pm

I've got the ResMed 12 volt conversion kit that I use to run my ResMed 10 off a huge, heavy deep cycle marine battery during power outages. I'd like to use the same setup for camping with a lighter 35 ah AGM battery. Rather than the standard post battery terminal posts they have a flat square terminal with a hole in it. Will the alligator clip connectors on the ResMed kit work with that type connector or do I need some type of converter for the terminals?

Any advice is appreciated!

Hi Bubba, Assume by ResMed 10 you are referring to an AirSense 10 that requires 24v of DC current. One option to consider is to get two half-U1 size batteries that run at 18-22 amp hours of capacity and hook them up in series. This will give you 24 volts of DC current. The batteries in this size range run at around $35-$40 each to will come out at a similar cost to a full U1 size 35 ah battery. Will be more efficient than using a converter. Only downside would be that you could not run other 12 volt devices on this set up. I built my portable camping power packs around the half-U1 size as one battery will run my CPAPs for a couple night plus. See my posts on this earlier in this thread.

Recommend that you do not use alligator clips in your set up - too much risk of a short circuit with exposed terminals. There is enough power in these batteries to weld a wrench to the terminals if it accidentally fell on them. Don't forget to add an in-line fuse and you will need to identify a charger that can charge the set up when set up this way or plan to charge the batteries separately.

Lane101 wrote: ↑

Sun Jun 27, 2021 2:25 pm

Hi Bubba, Assume by ResMed 10 you are referring to an AirSense 10 that requires 24v of DC current. One option to consider is to get two half-U1 size batteries that run at 18-22 amp hours of capacity and hook them up in series. This will give you 24 volts of DC current. The batteries in this size range run at around $35-$40 each to will come out at a similar cost to a full U1 size 35 ah battery. Will be more efficient than using a converter. Only downside would be that you could not run other 12 volt devices on this set up. I built my portable camping power packs around the half-U1 size as one battery will run my CPAPs for a couple night plus. See my posts on this earlier in this thread.

You can't use Resmed machines directly from 24 volts, you still need the DC-DC converter, which will run on 12-24volts dc.

Bubba in NC wrote: ↑

Sat Jun 26, 2021 10:09 pm

I've got the ResMed 12 volt conversion kit that I use to run my ResMed 10 off a huge, heavy deep cycle marine battery during power outages. I'd like to use the same setup for camping with a lighter 35 ah AGM battery. Rather than the standard post battery terminal posts they have a flat square terminal with a hole in it. Will the alligator clip connectors on the ResMed kit work with that type connector or do I need some type of converter for the terminals?

Any advice is appreciated!

I think this is what Bubba is using ... it works on 12V

https://www.cpap.com/productpage/resmed ... 0-machines

.

Of course he could make a cigarette adapter to plug in to or use something like this ... which is already made and portable.
viewtopic/t64943/Another-Battery-Option ... ry+option

joeslide wrote: ↑

Tue Mar 30, 2021 6:09 am

I would stay away from lead acid batteries. Scroll down on this link and look at the discharge plot of LiFePO4 vs SLA. Long story short: Don't buy a $60 battery for a $600 CPAP...

You get about half the time with a lead battery than LiFePO4. Take a look at the Bioenno 24 Volt LiFePO4 . You'll have to get/make an adapter...

I've been investigating battery boxes the last few weeks. Everything from common Jackery's, DIY'ing an AGM 12v into a battery box, to even the Bioenno LiFeP04 batteries. Been watching a lot of Will Prowse videos on the UTube. Up until 2 weeks ago I was planning on a solution to accommodate my Philips Dreamstation and it's basic 12v DC cable connector.

I'm now expecting a new Resmed Autoset 10 to arrive tomorrow which is 24v and requires a DC-DC converter. The unit runs on 24v, and the Resmed battery guide only references draw at 12v so I assumed anything DIY would be 12v. Your post links to a 24v Bioenno, which I assume was not a mistake. What would be the advantages / disadvantages of using a 12v vs 24v battery?

Why does Resmed bother to use 24v at all?

palerider wrote: ↑

Sun Jun 27, 2021 3:33 pm

Lane101 wrote: ↑

Sun Jun 27, 2021 2:25 pm

Hi Bubba, Assume by ResMed 10 you are referring to an AirSense 10 that requires 24v of DC current. One option to consider is to get two half-U1 size batteries that run at 18-22 amp hours of capacity and hook them up in series. This will give you 24 volts of DC current. The batteries in this size range run at around $35-$40 each to will come out at a similar cost to a full U1 size 35 ah battery. Will be more efficient than using a converter. Only downside would be that you could not run other 12 volt devices on this set up. I built my portable camping power packs around the half-U1 size as one battery will run my CPAPs for a couple night plus. See my posts on this earlier in this thread.

You can't use Resmed machines directly from 24 volts, you still need the DC-DC converter, which will run on 12-24volts dc.

My husband wants to know If you can explain why ?

babydinosnoreless wrote: ↑

Sun Jun 27, 2021 4:23 pm

palerider wrote: ↑

Sun Jun 27, 2021 3:33 pm

Lane101 wrote: ↑

Sun Jun 27, 2021 2:25 pm

Hi Bubba, Assume by ResMed 10 you are referring to an AirSense 10 that requires 24v of DC current. One option to consider is to get two half-U1 size batteries that run at 18-22 amp hours of capacity and hook them up in series. This will give you 24 volts of DC current. The batteries in this size range run at around $35-$40 each to will come out at a similar cost to a full U1 size 35 ah battery. Will be more efficient than using a converter. Only downside would be that you could not run other 12 volt devices on this set up. I built my portable camping power packs around the half-U1 size as one battery will run my CPAPs for a couple night plus. See my posts on this earlier in this thread.

You can't use Resmed machines directly from 24 volts, you still need the DC-DC converter, which will run on 12-24volts dc.

My husband wants to know If you can explain why ?

Because the machine wants a 'power good' signal from the power supply that two batteries won't provide.

palerider wrote: ↑

Sun Jun 27, 2021 6:23 pm

babydinosnoreless wrote: ↑

Sun Jun 27, 2021 4:23 pm

palerider wrote: ↑

Sun Jun 27, 2021 3:33 pm

Lane101 wrote: ↑

Sun Jun 27, 2021 2:25 pm

Hi Bubba, Assume by ResMed 10 you are referring to an AirSense 10 that requires 24v of DC current. One option to consider is to get two half-U1 size batteries that run at 18-22 amp hours of capacity and hook them up in series. This will give you 24 volts of DC current. The batteries in this size range run at around $35-$40 each to will come out at a similar cost to a full U1 size 35 ah battery. Will be more efficient than using a converter. Only downside would be that you could not run other 12 volt devices on this set up. I built my portable camping power packs around the half-U1 size as one battery will run my CPAPs for a couple night plus. See my posts on this earlier in this thread.

You can't use Resmed machines directly from 24 volts, you still need the DC-DC converter, which will run on 12-24volts dc.

My husband wants to know If you can explain why ?

Because the machine wants a 'power good' signal from the power supply that two batteries won't provide.

Palerider is correct. Looks like ResMed is doing something similar to Respironics by adding a third low voltage connection in its power cords to force purchase of their DC connectors. See the June 9, 2016 post by Verbatim on this link that more fully explains it:

viewtopic/t112270/Understanding-ResMed- ... uitry.html

Lots of details and a diagram on this link that illustrates the serial battery hook up approach. You will need to decide if it's worth the effort to avoid purchasing the adapter. Didn't realize that Resmed had started doing the same thing as Respironics to force additional accessory sales. Note that if you can avoid the converter battery efficiency will be higher.

In the case of my DreamStations, that operate directly on 12 volts, the accessory is just a proprietary cable for around $30. Still allows for direct DC power efficiencies. Made more sense to just purchase it versus building a workaround. All other 12 volt machines that I've owned over the years took a standard barrel connector. Best thought out, from a customer convenience perspective, is my Intellipap that allows simultaneous AC and 12 volt DC connection via separate receptacles enabling automatic switchover during a power failure. Of course I'm now back on the Intellipap thanks to the Respironics recall. When choosing a new machine the ability to operate directly on 12 volts has been a requirement.

palerider wrote: ↑

Sun Jun 27, 2021 6:23 pm

Because the machine wants a 'power good' signal from the power supply that two batteries won't provide.

Thank you

Lane101 wrote: ↑

Sun Jun 27, 2021 6:54 pm

palerider wrote: ↑

Sun Jun 27, 2021 6:23 pm

babydinosnoreless wrote: ↑

Sun Jun 27, 2021 4:23 pm

palerider wrote: ↑

Sun Jun 27, 2021 3:33 pm

Lane101 wrote: ↑

Sun Jun 27, 2021 2:25 pm

Hi Bubba, Assume by ResMed 10 you are referring to an AirSense 10 that requires 24v of DC current. One option to consider is to get two half-U1 size batteries that run at 18-22 amp hours of capacity and hook them up in series. This will give you 24 volts of DC current. The batteries in this size range run at around $35-$40 each to will come out at a similar cost to a full U1 size 35 ah battery. Will be more efficient than using a converter. Only downside would be that you could not run other 12 volt devices on this set up. I built my portable camping power packs around the half-U1 size as one battery will run my CPAPs for a couple night plus. See my posts on this earlier in this thread.

You can't use Resmed machines directly from 24 volts, you still need the DC-DC converter, which will run on 12-24volts dc.

My husband wants to know If you can explain why ?

Because the machine wants a 'power good' signal from the power supply that two batteries won't provide.

Palerider is correct. Looks like ResMed is doing something similar to Respironics by adding a third low voltage connection in its power cords to force purchase of their DC connectors. See the June 9, 2016 post by Verbatim on this link that more fully explains it:

viewtopic/t112270/Understanding-ResMed- ... uitry.html

Lots of details and a diagram on this link that illustrates the serial battery hook up approach. You will need to decide if it's worth the effort to avoid purchasing the adapter. Didn't realize that Resmed had started doing the same thing as Respironics to force additional accessory sales. Note that if you can avoid the converter battery efficiency will be higher.

In the case of my DreamStations, that operate directly on 12 volts, the accessory is just a proprietary cable for around $30. Still allows for direct DC power efficiencies. Made more sense to just purchase it versus building a workaround. All other 12 volt machines that I've owned over the years took a standard barrel connector. Best thought out, from a customer convenience perspective, is my Intellipap that allows simultaneous AC and 12 volt DC connection via separate receptacles enabling automatic switchover during a power failure. Of course I'm now back on the Intellipap thanks to the Respironics recall. When choosing a new machine the ability to operate directly on 12 volts has been a requirement.

Thank you so much. I sent the link to my husband.