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Electrical Requirements 100 - 240 AC, 12volt DC

Guest wrote:click on the specs tab in your link to find out the answer

Electrical Requirements 100 - 240 AC, 12volt DC

12VDC into the Respironics 1012975 adapter. Which converts the 12V DC to the 24V or so voltage the Legacy BiPAP pro needs.

Look on the back of the adapter, and it lists 12V DC input and 2?V DC output. I can't really read the picture to see if it's 20 or 26VDC specified on the output.

Maybe someone has the adapter or a better picture and can read it better, but the point is, it's not just 12V, and you need the Respironics DC-DC converter.

You might want to notify them of the error then cuz it clearly says you need 12V or 120V

Guest wrote:You might want to notify them of the error then cuz it clearly says you need 12V or 120V

I'll type slowly so maybe you'll understand it this time.

You need 12V AND the $165 Respironics converter, which changes 12V to 24V.

All the following values are taken from:

ResMed Battery Guide.

http://www.resmed.com/us/assets/documen ... lo_eng.pdf


So for an S9 Autoset plus H5i plus climate control , and EPR = 3, Climate Control setting of up to 27 C (80.6 F),
the following back- up parts are needed:

A) a modified sine wave Inverter of 150 watt,
B) a 12 volt DC Battery with current draw of 7 amps, and 78 amp-hours (for 8 hours use),
this is for a 95% pressure of up to 20 cm.


C) plus a Cable Adapter to connect the battery to the Inverter.


Same for an S9 Elite + H5i + climate control (EPR = 3, setting at 27 C (80.6 F))



Checking at Sears:


Battery

DieHard Marine Deep Cycle/RV Battery, Group Size 27M (Price With Exchange)
SearsItem# 02827524000 | Model# 27524

$134.99

Link:

http://www.sears.com/diehard-marine-dee ... ockType=G1

B/c this battery Amp Hours at 20 Hour Rate =105,

then at 7 amp draw it should allow 105:7 = 15 hours of sleep


175 watt Inverter @$33:



Link:

http://www.sears.com/go-power-gp-175-wa ... ockType=G1



Does John Fisher offer a better approach?

The picture makes it perfectly clear to me.

Probably slightly off-topic, but I did buy a deep-cycle marine battery last weekend, thinking I could power my System One if the power failed for more than one night thanks to Sandy. I already had one of the power packs used to start trucks, which I have had for a couple of years and used frequently with the Respironics cable plugged into the lighter socket on the power pack. Thought that I could just use the inverter that I had picked up many years ago for a different purpose to drive my CPAP. Fortunately, the power did not go out for me, so I never needed my shiny new battery. The inverter is a modified sine wave beasty, which I figure is not worth using (it is also 500 watts). So, tonight I ordered the Respironics adapter with the alligator clips to go directly on the battery. With the cable I already have, I believe I should be good to go? I don't use a humidifier other than as a silencer attached to my machine.

Obviously the lesson for me here is to listen to what the experts say, not some guy in the battery shop who has no clue about sleep apnea, let alone the needs of our machines. A converter such as that provided by Respironics is going to be much more efficient than an inverter. So, get the equipment recommended by the manufacturer - it may be expensive now, but a lot cheaper than having to buy a new machine after using the wrong gear. Plus, the cable is a lot lighter to carry around than the inverter!

archangle wrote:

Guest wrote:You might want to notify them of the error then cuz it clearly says you need 12V or 120V

I'll type slowly so maybe you'll understand it this time.

You need 12V AND the $165 Respironics converter, which changes 12V to 24V.

so you are beginning to grasp that you do need the 12v eh
cant seem to do with out it can ya
do ya get it yet

So who is Spam Deleting now?
This was after the SleepyToo2 post.

Guest wrote:

archangle wrote:

Guest wrote:You might want to notify them of the error then cuz it clearly says you need 12V or 120V

I'll type slowly so maybe you'll understand it this time.

You need 12V AND the $165 Respironics converter, which changes 12V to 24V.

so you are beginning to grasp that you do need the 12v eh
cant seem to do with out it can ya
do ya get it yet

SleepyToo2 wrote:The picture makes it perfectly clear to me.

Probably slightly off-topic, but I did buy a deep-cycle marine battery last weekend, thinking I could power my System One if the power failed for more than one night thanks to Sandy. I already had one of the power packs used to start trucks, which I have had for a couple of years and used frequently with the Respironics cable plugged into the lighter socket on the power pack. Thought that I could just use the inverter that I had picked up many years ago for a different purpose to drive my CPAP. Fortunately, the power did not go out for me, so I never needed my shiny new battery. The inverter is a modified sine wave beasty, which I figure is not worth using (it is also 500 watts). So, tonight I ordered the Respironics adapter with the alligator clips to go directly on the battery. With the cable I already have, I believe I should be good to go? I don't use a humidifier other than as a silencer attached to my machine.

Obviously the lesson for me here is to listen to what the experts say, not some guy in the battery shop who has no clue about sleep apnea, let alone the needs of our machines. A converter such as that provided by Respironics is going to be much more efficient than an inverter. So, get the equipment recommended by the manufacturer - it may be expensive now, but a lot cheaper than having to buy a new machine after using the wrong gear. Plus, the cable is a lot lighter to carry around than the inverter!

The MSW inverter should work fine with a Respironics PRS1 machine, even powering the humidifier. M series and earlier Respironics, it might damage the humidifier. It will damage an S8 humidifier.

You'll get more battery life with the Respironics DC cable. It's not really a "converter," just wires and connnectors.

You need this Respironics cable https://www.cpap.com/productpage/respir ... -cord.html or equivalent
and the alligator clips https://www.cpap.com/productpage/respir ... cable.html or equivalent.

If your using an S9 machine and you have a battery this is all you need. https://www.cpap.com/productpage/DC-Con ... hines.html

squid13 wrote:If your using an S9 machine and you have a battery this is all you need. https://www.cpap.com/productpage/DC-Con ... hines.html

Well, plus a charger and a battery box.

avi123 wrote:So for an S9 Autoset plus H5i plus climate control , and EPR = 3, Climate Control setting of up to 27 C (80.6 F),
the following back- up parts are needed:

A) a modified sine wave Inverter of 150 watt,
B) a 12 volt DC Battery with current draw of 7 amps, and 78 amp-hours (for 8 hours use),
this is for a 95% pressure of up to 20 cm.

C) plus a Cable Adapter to connect the battery to the Inverter.


Same for an S9 Elite + H5i + climate control (EPR = 3, setting at 27 C (80.6 F))


Checking at Sears:


Battery


DieHard Marine Deep Cycle/RV Battery, Group Size 27M (Price With Exchange)
SearsItem# 02827524000 | Model# 27524

$134.99

Link:

http://www.sears.com/diehard-marine-dee ... ockType=G1

175 watt Inverter @$33:



Link:

http://www.sears.com/go-power-gp-175-wa ... ockType=G1



Does John Fisher offer a better approach?

You also need a battery charger. I recommend a good battery box as well for spills, and to keep you from dropping something on the battery and shorting it out.

I can't tell whether that inverter has battery cable clips or not. If it's just got a cigarette lighter plug, you need the alligator clips to cigarette lighter adapter.

It will be more efficient and safe if you lose the inverter, and just use the ResMed DC-DC converter. https://www.cpap.com/productpage/DC-Con ... hines.html It is a few bucks more.

I've got a sample setup here.

John's design looks good, but it has a few more choices and parts.

Hey Arch, How about this on a 650 CCA Marine battery to my S9 with H5i? Instead of buying the resmed converter....

http://www.walmart.com/ip/Tripp-Lite-PV ... et/3910265

Last night I got 7.5 hours at 7cmh20, no H5i, on my Diehard 1150 jump starter and it registered 60% in the AM. So I think I could get 2 nights sleep out of it in a pinch.
Your thoughts?

Anything with a cranking amp rating is a staring battery not made for deep cycle use. It will work but it won't last long. The pates are thin with maximum active surface area, deep discharge physically alters the structure of a battery. Deep cycle batteries (rated in amp hours and only amp hours, something rated in amp hours and cranking amps is a hybrid, better than a starting battery but not a true deep cycle) have thick plates designed to survive repeated discharge. Note that even deep cycle should be taken with a grain of salt if you need to use it frequently and expect it to last it shouldn't be cycled more than half the amp hour rating, preferably less.

Short form, if you're desperate hook up to whatever works and accept the cost. For infrequent emergency use, a properly rated hybrid is fine. Advanced glass mat batteries are nice because they can't spill, just be careful to select an appropriate charger as they can be damaged by charging at the flooded battery rate. If you need to rely on it frequently, hit the off the grid sites and get smart on battery power, it's a bit of work at first but really not that complicated. If you can understand sleep disordered breathing and its therapy, you can understand battery power if you do the reading.

(used to live off the grid, and fyi for anyone considering it, it's ways more expensive and more work than anyone ever thinks it will be)

Good luck

PS: for a permanent set up, use dedicated battery terminal connectors and protect them with petroleum jelly. Alligator clips are a relatively high resistance connection and will waste some of your battery capacity, but again, if you need it now and it's what you have, hook it up and don't worry about it)

Lizistired wrote:Hey Arch, How about this on a 650 CCA Marine battery to my S9 with H5i? Instead of buying the resmed converter....

http://www.walmart.com/ip/Tripp-Lite-PV ... et/3910265

Last night I got 7.5 hours at 7cmh20, no H5i, on my Diehard 1150 jump starter and it registered 60% in the AM. So I think I could get 2 nights sleep out of it in a pinch.
Your thoughts?

I see nothing wrong with the Tripp-Lite inverter. The ResMed converter will get you more hours operation. I'm always a little concerned about inverters in general. They're fairly inexpensive devices, and I'm always a bit afraid they're going to flake out and produce the wrong voltage or waveform and damage something. I will admit I haven't heard of that actually happening that much, other than ResMed's instructions to not use them with S8 humidifiers if it's a MSW inverter.

The "CCA" battery is probably not a true "marine deep cycle" battery, it's probably a "starting" or "dual purpose" battery. It will work with some limitations. You'll probably get the same amp hours out of it as you would get out of a deep cycle battery. Unfortunately, after a few deep discharge cycles, it will begin to die like an old car battery as it's dying.

You could actually use one of these batteries, or even a car battery, without damage as long as you didn't discharge it deeply. You should not run even a true deep cycle battery all the way down.

Another warning is that the battery voltage doesn't drop much until the battery is severely run down. Once it drops to 10.5 volts, it's considered to be "dead" and won't put out current for much longer even if you keep using it. If it drops that far, you've probably done some damage. You're better off stopping when it gets a little below 12V.

There's a lot of info here: http://www.windsun.com/Batteries/Battery_FAQ.htm