If you have ever considered a backup battery for your cpap

[lynninnj]

Hello, been a while. Just wanted to drop in and let folks know if you have ever considered a battery backup for your cpap and it is within your means, the Amazon Prime Day sale has the Ecoflow Delta 2 for $479. If you don't have a prime account I believe they are $499 on eBay. https://www.amazon.com/EF-ECOFLOW-Porta ... th=1&psc=1

Be sure that you don't buy the "Backup battery" or refurbished as the backup only works if you have the basic delta 2 and requires being plugged into the main delta 2 unit in order to recharge.

They also have other Ecoflow products at around 50% off today.

Having a Delta 2 myself, I plug the pap into it when storms are coming through and if power goes out it doesn't skip a beat and cpap continues to run. It is also powerful enough to plug in my refrigerator. Normally if you keep the door closed you can get a few days out of it when power goes out without spoiling the whole thing. I figure if I get the fridge hooked up on there from time to time it will get it to temp and I can unplug and keep it for another day or so at a time.

Its a sweet device that I can plug into a wall outlet and charge in just about 1 hour. I also purchased a separate solar panel to charge. I used it the other night with a lot of heat and humidity on my pap and it cost about half of the battery (used 48%). I know I could have cut that number down if I changed settings a bit but I just like to run it every now and again to keep it fresh. The life expectancy of the battery is around 10 years before it goes down to 80% max capacity. It isn't a fire hazard like lithium ion batteries.

I hope this helps someone.

[ChicagoGranny]

Thanks for the advice. Looks like a good deal.

[lynninnj]

Thanks for the advice. Looks like a good deal.
Was this with the 11 AutoSet that is in your equipment profile?

I used it the other night with a lot of heat and humidity on my pap and it cost about half of the battery (used 48%).

Yes. I know I could have cut down power usage if I cut down the high humidity setting and heated hose.

They say it is good to run it every so often so it isn't just sitting in the closet so I didn't bother to cut back on the settings. Plus it was a long 8-9 hour night. I have used it for around 6-7 with lower settings and used around 35-40%

hth

[Dog Slobber]

I just want to chime in, I also use the EcoFlow Delta 2, the same one Lynn linked to.

Except I use it all the time.

I keep the Delta 2 plugged into the grid all the time, and my CPAP plugged in via AC 100% of the time as well. This way it acts as an Emergency Power Supply (EPS) 100% of the time, and does not use the batteries, therefor the life of the batteries are not used.

On one occasion, there was an unanticipated power loss, and I slep through it, no problem.

In case of an anticipated power loss, I suggested using a DC-DC converter, to get better life from the battery.

The battery charging can be configured for fast charge, and will fully charge from empty to full in less than two hours, but is noisy because of the fan. But it can be configured to trickle charge, will take a lot longer to charge, but silently. But because I run it in EPS mode, the battery is not used and it stays at 100%

I've had it about a year and love it.

[lynninnj]

I forgot about that DC power supply question from years ago.

Did Resmed ever make and market one for the AS11 specifically? I think that was the question back then and Im wondering about it again now that you mention it.

Also curious how much juice it saves too.

Thanks for reminder. Wish they were this price when I bought mine sheesh.

[ChicagoGranny]

Did Resmed ever make and market one for the AS11 specifically?

This is not ResMed, but it gets 4.8 of 5 on 58 reviews - https://www.amazon.com/AirSense-Convert ... r_1_3_sspa

[lynninnj]

Did Resmed ever make and market one for the AS11 specifically?

This is not ResMed, but it gets 4.8 of 5 on 58 reviews - https://www.amazon.com/AirSense-Convert ... r_1_3_sspa

hmmmm probably just like that. I see there’s a long list af available knockoff on amazon showing there. I couldn’t say which is best. I remember feeling like my cpap was “my baby” and was hesitant to use a knockoff (anything not specifically from Resmed).

I recently got a new machine due to a warranty issue so it kinda is “my baby” again.

I’m hoping Dogslobber comes back. Perhaps link the one he uses since he uses it all the time?

Good find though Granny. Did you order a Delta 2? I think they’re still on sale despite Prime Day ending and I think end date for ebay sale was 21st?

Edit: after looking more closely at the some people buy this section showing many cables, some are laveled 12-24v. I really don’t know what that means in terms of comparability.

I keep the Delta 2 plugged into the grid all the time, and my CPAP plugged in via AC 100% of the time as well.

In case of an anticipated power loss, I suggested using a DC-DC converter, to get better life from the battery.

Would love to know which cable you use and how much juice it saves. I may go ahead and order something to maximize efficiency. Thanks.

[Dog Slobber]

Did Resmed ever make and market one for the AS11 specifically? I think that was the question back then and Im wondering about it again now that you mention it.

ResMed still does not have a Air11 branded DC-DC converter, but the AirMini DC-DC Converter numbers are 24v at 65w, which is the same output as the Air11 power brick. The port is compatible and it would be a huge mistake for ResMed to produce a form-factor compatible port that isn't pin compatible.

Would love to know which cable you use and how much juice it saves. I may go ahead and order something to maximize efficiency. Thanks.

I don't have an Air11, I use the Air 10, so my DC-DC converter is for the Air10 models.

But I *always* use the AC adapter, because the power-station bypasses the batteries only when using the AC outlet. If I were to use the DC, then it draws from the batteries.

I should use the the power-station a few nights with the AC-Adapter, and then the DC-DC inverter to compare efficiency. If I do, I'll post the difference.

[lynninnj]

Did Resmed ever make and market one for the AS11 specifically? I think that was the question back then and Im wondering about it again now that you mention it.

ResMed still does not have a Air11 branded DC-DC converter, but the AirMini DC-DC Converter numbers are 24v at 65w, which is the same output as the Air11 power brick. The port is compatible and it would be a huge mistake for ResMed to produce a form-factor compatible port that isn't pin compatible.

Would love to know which cable you use and how much juice it saves. I may go ahead and order something to maximize efficiency. Thanks.

I don't have an Air11, I use the Air 10, so my DC-DC converter is for the Air10 models.

But I *always* use the AC adapter, because the power-station bypasses the batteries only when using the AC outlet. If I were to use the DC, then it draws from the batteries.

I should use the the power-station a few nights with the AC-Adapter, and then the DC-DC inverter to compare efficiency. If I do, I'll post the difference.

Hi sorry about being a bit daft but it’s unclear to me what you mean by form compatible and pin compatible etc.

I don’t know if I should be leaning towards a true resmed product versus one such as the one linked by Chicago Granny.

I welcome the insight on power usage differences. Might motivate me to really get on to ordering one.

thanks for sharing your knowledge

[lynninnj]

huh…..waddayaknow

seems pricy compared to amazon offerings tho I haven’t looked hard at other suppliers for resmed branded ones

https://cpapsupplies.com/resmed-airsens ... -converter

[Dog Slobber]

it’s unclear to me what you mean by form compatible and pin compatible etc.

By being form (factor) compatible, it means being physically compatible, so that the cable could be physically plugged into either the Air-Mini or the Air 11. By being pin compatible, the roles (usage/voltage/etc.) are the same.

Basicly what I was saying it would be a very unwise design decision, if an AirMini power supply could physically be plugged into an Air11, but bring harm to the device of power supply because of incompatibilities between voltages or pin layout.

ResMed actually incorporated a very clever design into the power supply connector on the AirMini and Air11.

The Air11 has a square, 8-pin connector with two-corners cut. The Air-Mini has a square, 8-pin connector with one-corner cut.

This is clever because devices that are compatible with the Air11 and AirMini will have both the corners cut, and therefore physically able to plug into both.

Power supplies that do not have sufficient output for the larger drawing Air11 will have just one corner cut, so they can't be physically plugged into the Air11.

ResMed_connector.png (510.08 KiB) Viewed 8414 times

This is seen in the above picture.

Note the upper connector, it is designed for only the AirMini, and because only one corner is cut, it can't physically fit into an Air11. This is important because an Air11 (with a humidifier and heated hose is capable of drawing more than 20 watts).

Now look at the lower connector on the DC-DC Converter. It's capable of delivering 65 watts and can serve both the AirMini and Air11. It has two corners cut and therefore can physically fit in both devices.

As far as which is a better value ResMed or branded or knock-off, I really don't know. I only have the ResMed DC-DC for Air10s

[lynninnj]

Thanks Dog Slobber!

Brilliant explanation. Photo helps a great deal also.

I’m going to keep researching and decide if I want to splurge and go name brand or amazon knockoff. Gotta read reviews and look for coupons.

I like the idea of running it thru the Delta 2 all the time. For some reason I vaguely recall discussing charge through vs using the battery. Fuzzy recollection there but iirc it’s a more direct charge thru maybe?

Well, thanks again.

[loggerhead12]

ResMed still does not have a Air11 branded DC-DC converter, but the AirMini DC-DC Converter numbers are 24v at 65w, which is the same output as the Air11 power brick.

I'm having trouble keeping my Airsense 11 running from the Air Mini DC-DC converter with a 12-volt battery, the same one I used to power my AirCurve 10 for years. It comes on, will run for a few minutes, then dies,then comes back on, and repeats. I had the same issue with the 11 running on 12 volts from my Shargeek II. Fortunately the Shargeek lets you control its output voltage incrementally up to 24 volts. When I got to 16 volts, the Airsense 11 stays on. It's not a completely apples-to-apples comparison, though. The Shargeek battery has a DC output, so you don't have to use the DC-DC converter. I have to do more testing with a couple of 12-volt batteries in series. That configuration is a pain to charge, though.

[Dog Slobber]

I like the idea of running it thru the Delta 2 all the time. For some reason I vaguely recall discussing charge through vs using the battery. Fuzzy recollection there but iirc it’s a more direct charge thru maybe?

One of the discussion points that made some uncomfortable about running their Delta 2 as a UPS/EPS for their CPAPs, was incorrectly based on a potential shortcoming in the previous Delta models.

The Delta suggested that they not be used as a "Long-term UPS".

Hence, it is recommended to use the UPS function of EF DELTA only for temporary emergency usage rather than for long-term usage

That suggestion was removed from the Delta 2, they also started referring to UPS-like functionality as EPS, as there is a 30 millisecond switch-over from grid to battery.

That switchover delay is disastrous for many applications such as computer servers and some other sensitive electronics. But perfectly acceptable for CPAP and most other electrical devices.

[lynninnj]

I like the idea of running it thru the Delta 2 all the time. For some reason I vaguely recall discussing charge through vs using the battery. Fuzzy recollection there but iirc it’s a more direct charge thru maybe?

One of the discussion points that made some uncomfortable about running their Delta 2 as a UPS/EPS for their CPAPs, was incorrectly based on a potential shortcoming in the previous Delta models.

The Delta suggested that they not be used as a "Long-term UPS".

Hence, it is recommended to use the UPS function of EF DELTA only for temporary emergency usage rather than for long-term usage

That suggestion was removed from the Delta 2, they also started referring to UPS-like functionality as EPS, as there is a 30 millisecond switch-over from grid to battery.

That switchover delay is disastrous for many applications such as computer servers and some other sensitive electronics. But perfectly acceptable for CPAP and most other electrical devices.

I recall that conversation. I was thinking more specifically that there was something about the differences between having your device computer CPAP, whatever plugged into one of the power outlets versus the AC outlet. I could be completely mistaken. It’s been a while.