Camping with the cub scouts? resmed airsense and power tool batteries?

[Lifeisabeach]

EDIT: There's a lot of flak over this and some confusing information on ResMed's own site. Their battery guide implies that the power output from this particular inverter is only compatible with the S9 and a couple other older devices without humidifiers. It doesn't mention the Air10 series in the section that discusses inverters, but implies by omission that they can't be used.
https://www.resmed.com/us/dam/documents ... lo_eng.pdf

However, they have a Travel FAQ that appears to be more up-to-date and discusses specifically the modern models, including the Air10 series, and they are unambiguous on this point:

• For AirMini, AirSense 10, AirCurve 10, Lumis and S9 machines...

• Alternatively, you can use a modified sine wave inverter with a continuous power rating of 150w or higher for these devices.

https://www.resmed.com/au/en/consumer/s ... -faqs.html

So, my original post follows below. By ResMed's own advice, it WILL work and IS a valid option even if not an ideal one, but take note of my own reservations.
______________________________________________

I don't use Milwaukee's tools, but I do use Ryobi's 18v tools and they make an inverter that will let you use their 18v batteries for AC power.
https://www.homedepot.com/p/RYOBI-150-W ... /308460871

Now, Milwaukee doesn't appear to make an equivalent to this, but someone makes an adapter that lets you use the Ryobi inverter with Milwaukee's batteries.
https://www.ebay.com/itm/Badaptor-Milwa ... SwkP1d34-5
https://www.badaptor.com/product/conver ... less-tool/

I've used my Ryobi 4 Ah batteries in a pinch to run my ResMed S9 and AirCurve when losing power unexpectedly and the longest I've run it, I know 5-6 hours at least, maybe 8. So your 5 Ah batteries should last you 8 hours, although if you decide to try this, I would do a trial run to make sure. Of course there are downsides. You'd need one battery per night, which you'd have to carry around. The inverter WILL warm up as it's running. I'm not sure that running it for 8 hours is a safe usage scenario for these batteries. I'm also unfamiliar with that Badapter and any downsides to using it, or how safe it is to use it.

[zorki1c]

Or you could do what I have done... go a few nights without cpap

[palerider]

But I can't speak to Resmed's copy protection.

Other than patents, which all device manufacturers have, there is no "copy protection"

[palerider]

they make an inverter

Inverters waste half (or more) of your battery time, they're typically very inefficient.

[Lifeisabeach]

they make an inverter

Inverters waste half (or more) of your battery time, they're typically very inefficient.

Yeah, but it gets the job done with what you have on hand, which is his goal. So he can spend a little money to use what he already has, or a bit more to use something that's more efficient but likely limited to this usage scenario. The inverter for these batteries gives you a LOT of other options. I've used it in a power outage to get the wifi back online for my wife so she could keep working (plugged the power strip for router and cable modem into it). I also use it for my Joetisserie rather than running an extension cable to an outlet. It's just a super handy option to have.

[Mr. Snorestoomuch]

But I can't speak to Resmed's copy protection.

Other than patents, which all device manufacturers have, there is no "copy protection"

This video mentions that the resmed needs a special connector with a "chip" in it to recognize a power source...
Is this adapter available? or am I stuck buying the DC adapter from resmed?
https://www.youtube.com/watch?v=HZne40RJHgw

If they're going to go through the expense of making an adapter, they're going to make sure that you need to buy theirs. I'm confident that there's an easy workaround for someone who regularly plays with electricity, but that's not me.

[palerider]

This video mentions that the resmed needs a special connector with a "chip" in it to recognize a power source...
Is this adapter available? or am I stuck buying the DC adapter from resmed?
https://www.youtube.com/watch?v=HZne40RJHgw

If they're going to go through the expense of making an adapter, they're going to make sure that you need to buy theirs. I'm confident that there's an easy workaround for someone who regularly plays with electricity, but that's not me.

You're quoting something that's wrong.

[palerider]

they make an inverter

Inverters waste half (or more) of your battery time, they're typically very inefficient.

Yeah, but it gets the job done with what you have on hand, which is his goal

Given that he *does not even have that brand*, it doesn't even come close to "getting the job done with what's "on hand".

He'd be much better off spending the same money on a Resmed dc-dc converter, thus getting twice the runtime out of the batteries.

[Lifeisabeach]

they make an inverter

Inverters waste half (or more) of your battery time, they're typically very inefficient.

Yeah, but it gets the job done with what you have on hand, which is his goal

Given that he *does not even have that brand*, it doesn't even come close to "getting the job done with what's "on hand".

He'd be much better off spending the same money on a Resmed dc-dc converter, thus getting twice the runtime out of the batteries.

He doesn't need *that brand* of batteries since that inverter will work with the batteries he *already has* with *the adapter* I also linked to. He can decide for himself what he's *much better off* doing with his own money and with what he has on hand already.

You can't even use that ResMed DC-DC converter with these tool batteries. Not without cobbling something together. All I've seen is speculation on what to do that involves taking apart a perfectly good battery and, I assume, ruining it for any other use again. It'd be a fine thing to do if you know what you are doing, I'm sure. If not, there are no out-of-the-box solutions that I know of.

[palerider]

they make an inverter

Inverters waste half (or more) of your battery time, they're typically very inefficient.

Yeah, but it gets the job done with what you have on hand, which is his goal

Given that he *does not even have that brand*, it doesn't even come close to "getting the job done with what's "on hand".

He'd be much better off spending the same money on a Resmed dc-dc converter, thus getting twice the runtime out of the batteries.

He doesn't need *that brand* of batteries since that inverter will work with the batteries he *already has* with *the adapter* I also linked to. He can decide for himself what he's *much better off* doing with his own money and with what he has on hand already.

You can't even use that ResMed DC-DC converter with these tool batteries. Not without cobbling something together. All I've seen is speculation on what to do that involves taking apart a perfectly good battery and, I assume, ruining it for any other use again. It'd be a fine thing to do if you know what you are doing, I'm sure. If not, there are no out-of-the-box solutions that I know of.

He may not need new batteries and charger, however, he would need the adapter AND the energy wasting inverter, which together cost very nearly as much as the Resmed DC converter, which would enable him to use a multitude of batteries, as well as get twice the use out of the tool batteries he has, should he want to go that route.

Your idea is far down on the "makes sense" list. If I were feeling less charitable, I'd call your idea "dumb", along the lines of "oh, look, a screw, let me hammer it in". Use the right tool.

[palerider]

Ok, I am not sure where to start.

It appears that you are trying to use a Milwaukee battery to USB adaptor to power your Resmed Airsense 10.

The Milwaukee battery may be 18v (it actually is ~20v when fully charged) and this may be plenty of voltage for you Airsense 10 but USB is only 5v, the adaptor is actually reducing the voltage from18-20v to 5v.

My next question is how you are going from the USB to your Airsense, do you have an adaptor? If yes, which one, what are it's specs? The Resmed 12v t0 24v adaptor can handle 12v-20v input and output 24v for your Airsense 10 but there is no mention of what you are using to make this connection.

If I was going to try to do this, I would tear that Milwaukee battery to USB adaptor apart and remove the voltage regulator chip and change the output to something that I could connect into. I would then add a cigarette 12v socket to the adaptor and plug a Resmed 12v to 24v adaptor into it. If that worked I would calculate my power needs and make modify enough adaptors to connect to that number of battery packs and sire those adaptors in PARALLEL (not series) to a single 12v socket.

This, however, is good advice.

[palerider]

So your 5 Ah batteries should last you 8 hours,

Not even close.

A 12v 35ah battery will give 4-5 nights through an efficient voltage converter, that's 7-8 ah without the power waste of an inverter.

The inverter WILL warm up as it's running.

Battery life wasted as heat.

I'm not sure that running it for 8 hours is a safe usage scenario for these batteries.

Literally your best contribution to the thread.

[Lifeisabeach]

Inverters waste half (or more) of your battery time, they're typically very inefficient.

Yeah, but it gets the job done with what you have on hand, which is his goal

Given that he *does not even have that brand*, it doesn't even come close to "getting the job done with what's "on hand".

He'd be much better off spending the same money on a Resmed dc-dc converter, thus getting twice the runtime out of the batteries.

He doesn't need *that brand* of batteries since that inverter will work with the batteries he *already has* with *the adapter* I also linked to. He can decide for himself what he's *much better off* doing with his own money and with what he has on hand already.

You can't even use that ResMed DC-DC converter with these tool batteries. Not without cobbling something together. All I've seen is speculation on what to do that involves taking apart a perfectly good battery and, I assume, ruining it for any other use again. It'd be a fine thing to do if you know what you are doing, I'm sure. If not, there are no out-of-the-box solutions that I know of.

He may not need new batteries and charger, however, he would need the adapter AND the energy wasting inverter, which together cost very nearly as much as the Resmed DC converter, which would enable him to use a multitude of batteries, as well as get twice the use out of the tool batteries he has, should he want to go that route.

Your idea is far down on the "makes sense" list. If I were feeling less charitable, I'd call your idea "dumb", along the lines of "oh, look, a screw, let me hammer it in". Use the right tool.

It wouldn't be my first choice either, but it's *his* choice to make. No need to be such a prick about it.

[Lifeisabeach]

Ok, I am not sure where to start.

It appears that you are trying to use a Milwaukee battery to USB adaptor to power your Resmed Airsense 10.

The Milwaukee battery may be 18v (it actually is ~20v when fully charged) and this may be plenty of voltage for you Airsense 10 but USB is only 5v, the adaptor is actually reducing the voltage from18-20v to 5v.

My next question is how you are going from the USB to your Airsense, do you have an adaptor? If yes, which one, what are it's specs? The Resmed 12v t0 24v adaptor can handle 12v-20v input and output 24v for your Airsense 10 but there is no mention of what you are using to make this connection.

If I was going to try to do this, I would tear that Milwaukee battery to USB adaptor apart and remove the voltage regulator chip and change the output to something that I could connect into. I would then add a cigarette 12v socket to the adaptor and plug a Resmed 12v to 24v adaptor into it. If that worked I would calculate my power needs and make modify enough adaptors to connect to that number of battery packs and sire those adaptors in PARALLEL (not series) to a single 12v socket.

This, however, is good advice.

Great advice... assuming he knows how to do this safely and doesn't need those batteries anymore for use with his tools.

[Lifeisabeach]

So your 5 Ah batteries should last you 8 hours,

Not even close.

I'll remember that the next time my 4 Ah battery gets close to that.

The inverter WILL warm up as it's running.

Battery life wasted as heat.

Thus why I mentioned it.

I'm not sure that running it for 8 hours is a safe usage scenario for these batteries.

Literally your best contribution to the thread.

He asked a question, I directly answered it, even with qualifiers. It really kills you that I actually gave him the answer he was looking for, doesn't it?