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[Equipment] Battery backup
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AlanE Offline

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Posts: 1,491
Joined: Mar 2015

Machine: ResMed AirSense 10 Autoset
Mask Type: Nasal pillows
Mask Make & Model: P10 & Mirage Liberty backup
Humidifier: Built-in
CPAP Pressure: 10-14
CPAP Software: ResScan SleepyHead

Other Comments: ʕ•ᴥ•ʔ So Long, and Thanks for All the Fish

Sex: Male
Location: Southwest Florida

Post: #11
RE: Battery backup
Interesting idea. If you search for BOX-24-31 you can find battery boxes fairly cheap. They seem large enough to hold an AGM and a 'battery tender' device. Also Battery Tender has a 5-Watt solar panel with a controller built into it for around $60us. That should be good to recharge the battery.



Using FlashAir W-03 SD card in machine. Access through wifi with FlashPAP or Sleep Master utilities.

I wanted to learn Binary so I enrolled in Binary 101. I seemed to have missed the first four courses. Big Grinnie
07-26-2015 08:29 AM
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foss Offline
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Posts: 203
Joined: Jun 2015

Machine: ResMed Autosense 10
Mask Type: Full face mask
Mask Make & Model: Respironics Amara View FFM
Humidifier: Resmed
CPAP Pressure: 9 - 13.4
CPAP Software: ResScan SleepyHead

Other Comments: Marine Chemist, Science Teacher & Counselor, Internet Server Admistrator

Sex: Male
Location: Under The Rainbow

Post: #12
RE: Battery backup
Hi AlanE,

I use a 5 watt solar panel to charge a battery I use to supply low power (QRP) amateur radio rigs. QRP is radio operation at 5 watts or less. A 5 watt panel is unlikely to keep up with the needs of an xPAP. Even without the humidifier or the hose heater turned on, it would require much more than 5 watts. It would charge the battery but probably too slowly to completely recharge the battery in one day's sunlight.

Jeff

Sleep is worth the effort.
07-26-2015 08:50 AM
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AlanE Offline

Advisory Members

Posts: 1,491
Joined: Mar 2015

Machine: ResMed AirSense 10 Autoset
Mask Type: Nasal pillows
Mask Make & Model: P10 & Mirage Liberty backup
Humidifier: Built-in
CPAP Pressure: 10-14
CPAP Software: ResScan SleepyHead

Other Comments: ʕ•ᴥ•ʔ So Long, and Thanks for All the Fish

Sex: Male
Location: Southwest Florida

Post: #13
RE: Battery backup
Amateur Extra here Smile

The solar panel is not to keep up with xPAP since you have no sun at night. But in an extended power outage it would help charge the battery when you have no other option. I would just get a 100 watt panel. In fact I'm looking to get 3 to put on the roof for powering ham gear.



Using FlashAir W-03 SD card in machine. Access through wifi with FlashPAP or Sleep Master utilities.

I wanted to learn Binary so I enrolled in Binary 101. I seemed to have missed the first four courses. Big Grinnie
07-26-2015 09:00 AM
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foss Offline
Wiki Editor
Advisory Members

Posts: 203
Joined: Jun 2015

Machine: ResMed Autosense 10
Mask Type: Full face mask
Mask Make & Model: Respironics Amara View FFM
Humidifier: Resmed
CPAP Pressure: 9 - 13.4
CPAP Software: ResScan SleepyHead

Other Comments: Marine Chemist, Science Teacher & Counselor, Internet Server Admistrator

Sex: Male
Location: Under The Rainbow

Post: #14
RE: Battery backup
Last night....

I ran off the 55 amp hour Powercell AGM battery for 9 hours and 15 minutes. The ResMed A10 Autosense settings were for auto humidity and auto for heated ClimateAir hose. About 2/3 of the water in the humidity tank was consumed. The air conditioner for my apartment was set to 75 degrees fahrenheit. The indicated pressure for the evening was 10.9, also set to auto. The beginning voltage on the battery was 13.25 and the voltage reading this morning was 12.75. Based upon the voltage readings, the battery could easily supply two nights or more of usage at the above Autosense settings. Without the humidity and hose heater turned on, it could easily operate the machine for several nights. I am using the ResMed DC converter that is designed to plug into the cigarette lighter in a car (or other 12 volt supply). The converter is very efficient at converting the voltage to the proper 24 volts required by the A10, much more efficient than an inverter (12 volts DC to 120 volts AC) and then using the ResMed 120 volt power supply. I am sure that makes a considerable difference. I have tried using inverters with my amateur radio equipment and get relatively poor battery life compared to 12 volts direct without the need to operate off 120 volts AC.

I will provide more information as I develop data. I hope to post an article in the Wiki as I have more data.

Thanks, Jeff

Sleep is worth the effort.
07-26-2015 09:02 AM
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parkerdt Offline

Advisory Members

Posts: 256
Joined: May 2015

Machine: ResMed A10 AutoSet
Mask Type: Other
Mask Make & Model: WISP, Nuance
Humidifier: Climate Hose and included humidifier
CPAP Pressure: 9
CPAP Software: SleepyHead

Other Comments: I alternate between WISP and fabric Nuance - like both!

Sex: Male
Location: Mebane, NC

Post: #15
RE: Battery backup
Great Stuff! Keep us updated as you learn more, please.

thanks!
Dave


(07-26-2015 09:02 AM)foss Wrote:  Last night....

I ran off the 55 amp hour Powercell AGM battery for 9 hours and 15 minutes. The ResMed A10 Autosense settings were for auto humidity and auto for heated ClimateAir hose. About 2/3 of the water in the humidity tank was consumed. The air conditioner for my apartment was set to 75 degrees fahrenheit. The indicated pressure for the evening was 10.9, also set to auto. The beginning voltage on the battery was 13.25 and the voltage reading this morning was 12.75. Based upon the voltage readings, the battery could easily supply two nights or more of usage at the above Autosense settings. Without the humidity and hose heater turned on, it could easily operate the machine for several nights. I am using the ResMed DC converter that is designed to plug into the cigarette lighter in a car (or other 12 volt supply). The converter is very efficient at converting the voltage to the proper 24 volts required by the A10, much more efficient than an inverter (12 volts DC to 120 volts AC) and then using the ResMed 120 volt power supply. I am sure that makes a considerable difference. I have tried using inverters with my amateur radio equipment and get relatively poor battery life compared to 12 volts direct without the need to operate off 120 volts AC.

I will provide more information as I develop data. I hope to post an article in the Wiki as I have more data.

Thanks, Jeff
07-26-2015 05:51 PM
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PaulaO2 Offline
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Posts: 8,065
Joined: Feb 2012

Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #16
RE: Battery backup
So I need a minimum of 55ah. Probably aim for 100.

I'm having problems finding a way to recharge the battery after using it. Solar is good but only if you have enough panels and wattage. But if I only use a few volts, then maybe it won't need that much to get it back up to full.

And yes! I keep deep cycle AGM batteries for my ham gear, too. Extra ticket. I don't have an active shack right now but use HTs in the truck. I had it set up better then the OL wrecked it and I had to remove it all prior to it being repaired. Then she wrecked it again before I could get it all back in and I just never got up the nerve to finish.

PaulaO2
Apnea Board Moderator
www.ApneaBoard.com


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07-26-2015 07:26 PM
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parkerdt Offline

Advisory Members

Posts: 256
Joined: May 2015

Machine: ResMed A10 AutoSet
Mask Type: Other
Mask Make & Model: WISP, Nuance
Humidifier: Climate Hose and included humidifier
CPAP Pressure: 9
CPAP Software: SleepyHead

Other Comments: I alternate between WISP and fabric Nuance - like both!

Sex: Male
Location: Mebane, NC

Post: #17
RE: Battery backup
I'm just not a do-it-yourself guy when it comes to electricity, and especially when it comes to important medical equipment. I hope one of our vendors, someday, will offer a plug and play battery/tender kit as has been discussed. I thin 100 Ah would be great, and I'd consider 200 Ah. Solar charging is not make or break for me as our house is quite shady. Being able to charge from a portable back-up generator without perfect regulation would be great. Unfortunately, I am, so far, a market of one. Smile

Dave
07-26-2015 07:51 PM
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foss Offline
Wiki Editor
Advisory Members

Posts: 203
Joined: Jun 2015

Machine: ResMed Autosense 10
Mask Type: Full face mask
Mask Make & Model: Respironics Amara View FFM
Humidifier: Resmed
CPAP Pressure: 9 - 13.4
CPAP Software: ResScan SleepyHead

Other Comments: Marine Chemist, Science Teacher & Counselor, Internet Server Admistrator

Sex: Male
Location: Under The Rainbow

Post: #18
RE: Battery backup
I am an extra class as well. I wasn't suggesting that a 5 watt charger would ever keep up with an xPAP machine. Someone had mentioned a 5 watt solar panel. I use a 5 watt panel with my QRP radios and it does well with backup batteries for night use. (A set of AA lithium batteries works well and charge easily from the 5 watt panel.) My NC40A only draws about 15 ma on receive and a little over 125 ma on transmit. Wink My Elecraft K2 sn 155 needs a little more but not a lot.

I hope we meet on the bands some day,
73, de Jeff

Sleep is worth the effort.
07-26-2015 08:45 PM
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OMyMyOHellYes Online

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Posts: 915
Joined: Mar 2013

Machine: Respironics 560 Auto
Mask Type: Nasal mask
Mask Make & Model: Resmed Mirage FX
Humidifier: Respironics System One (no heated hose)
CPAP Pressure: 08.0-15.0 cm/H2O
CPAP Software: EncoreBasic

Other Comments:

Sex: Male
Location: Texas

Post: #19
RE: Battery backup
I have seen something in the radio world and I would think about doing something like this if ever I was in a situation where short term power failures were common:

1. Get a 13.8V (12V) power supply to hook to household 110 AC outlet
2. Get a Super PWRgate from West Mountain Radio
3. Get a battery (35, 55, 75, 100, heck even 200 AH if that's what your fancy runs towards.)
4. Resmed users only - get the Resmed DC power supply.

Hook all that up and run the xPAP from the PWRgate. It serves as a charger when the battery is not supplying power so it will always keep the battery topped off (don't know if its Al Gore Rhythm is as good as the Battery Tender's - might require investigation) . It switches to the power supply, which is fed from wall socket, when power is running and fails over to the battery when the wall socket power supply goes down. Being from West Mountain Radio, it uses PowerPole connectors. (YAY PowerPoles! PowerPoles - an addiction unto itself for folks that use 12V DC power.)

It would be a bit clunky, but it would accomplish what a lot of folks seem to want. Kind of a dedicated homebrew DC output UPS (avoiding that inverter waste) - one that is scalable for xPAP use. And you can put whatever size battery or bank of batteries needed to get you a full night of blissful, heated humidification.

Radioactive xPAPers know where to go looking for this. If anyone wants specific direction, PM me and I can send links.

OMMOHY
(This post was last modified: 07-27-2015 05:50 AM by OMyMyOHellYes.)
07-27-2015 05:50 AM
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parkerdt Offline

Advisory Members

Posts: 256
Joined: May 2015

Machine: ResMed A10 AutoSet
Mask Type: Other
Mask Make & Model: WISP, Nuance
Humidifier: Climate Hose and included humidifier
CPAP Pressure: 9
CPAP Software: SleepyHead

Other Comments: I alternate between WISP and fabric Nuance - like both!

Sex: Male
Location: Mebane, NC

Post: #20
RE: Battery backup
OK, say for a 100 AH battery:

How big a charger? Brief look online, and I don't see one with power poles output. Would like to make this as straightforward as possible... Guess us ResMed folks would also need a power poles to cigarette lighter adapter to plug the 12-24 V converter into. And it appears you would have some question about eh PWRgate as a long term trickle charger?

thanks!
Dave
07-27-2015 08:11 AM
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