AC converter for car question

AltPwrPuffer · Post by **AltPwrPuffer** » Tue Jan 02, 2007 6:14 pm

I guess you want to use your inverter to power a laptop and your Xpap machine while going down the road? You're not clear on your just exactly what you want to accomplish.

But, with that being the case you could probably run the laptop and your xpap without your humidifier heat turned on, your inverter is to small to handle the load. Actually it may be too small to handle the laptop and the xpap depending on the watts of both machines. My xpap and humidifier loads my 800 watt inverter enough that the cooling fan runs all the time, give it a try, all that will happen is that the inverter will shut down from overload. Have Fun, Charlie

Snoredog · Post by **Snoredog** » Tue Jan 02, 2007 6:36 pm

[quote="dsm"][quote="Snoredog"]
<snip>

You only need an inverter if you have a Resmad machine, all the Remstars and P&B 420x machines run directly off of 12VDC power.

dsm · Post by **dsm** » Tue Jan 02, 2007 7:37 pm

Snores me ole mate

The Bipap S/T box I have won't run of 12v. But!, Respironics stopped selling them some time ago.

Interestingly Resmed stopped selling S7 in 2006. The S8s have been with us for about a year now initially with the S8 Escape (as per photos).

I have no problem with you stating qualified points such as "Resmed S7 cpaps won't run off 12v" but you choose to claim by omission that all Resmed machines won't run of 12v and you have seen me post those photos at least 3 times before. I am more than certain you saw at least one of them. Plus I have correct this issue many times previously.

I am not looking to start off 2007 with the worst of what transpired in 2006 between us. I do ask that if you want to attack Resmed as you repeatedly do, please be decent enough to do so with clear facts and preferably without the pettyness (i.e. 'Resmad') ? - what do you want us to think when you write this ?, maturity?, insight?, wisdom?, common sense?.

Again, your knowledge of Respironics products does you credit. Why ruin that well earned image with biased statements about a company you have an emotional issue with and making rude remarks to others here who pull you up on them.

2007 it is just a pup mate!, only just learning to crawl - let us keep it peaceful.

Cheers & have a happy 2007.

_________________

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CPAPopedia Keywords Contained In This Post (Click For Definition): respironics, resmed, bipap

Snoredog · Post by **Snoredog** » Tue Jan 02, 2007 7:38 pm

[quote="dsm"]Snores me ole mate

The Bipap S/T box I have won't run of 12v. But!, Respironics stopped selling them some time ago.

Interestingly Resmed stopped selling S7 in 1996. The S8s have been with us for about a year now initially with the S8 Escape (as per photos).

I have no problem with you stating qualified points such as "Resmed S7 cpaps won't run off 12v" but you choose to claim by omission that all Resmed machines won't run of 12v and you have seen me post those photos at least 3 times before. I am more than certain you saw at least one of them. Plus I have correct this issue many times previously.

I am not looking to start off 2007 with the worst of what transpired in 2006 between us. I do ask that if you want to attack Resmed as you repeatedly do, please be decent enough to do so with clear facts and preferably without the pettyniess (i.e. 'Resmad') ? - what do you want us to think ?

Again, your knowledge of Respironics products does you credit. Why ruin that well earned image with biased statements about a company you have an emotional issue with and making rude remarks to others here who pull you up on them.

2007 it is just a pup mate!, only just learning to crawl - let us keep it peaceful.

Cheer & have a happy 2007.

dsm · Post by **dsm** » Tue Jan 02, 2007 7:58 pm

So you never attacked Resmed ?

Ahh well

Happy new year anyway mate

DSM

Guest · Post by **Guest** » Tue Jan 02, 2007 11:00 pm

AltPwrPuffer

That is exactly what I want to do.

Actually just the APAP and the laptop. I would be afraid of splashing water with the humididfier.

I am concerned of causing damage to either the inverter and/or the laptop and APAP.

AltPwrPuffer wrote:I guess you want to use your inverter to power a laptop and your Xpap machine while going down the road? You're not clear on your just exactly what you want to accomplish.

But, with that being the case you could probably run the laptop and your xpap without your humidifier heat turned on, your inverter is to small to handle the load. Actually it may be too small to handle the laptop and the xpap depending on the watts of both machines. My xpap and humidifier loads my 800 watt inverter enough that the cooling fan runs all the time, give it a try, all that will happen is that the inverter will shut down from overload. Have Fun, Charlie

TNhunter · Post by **TNhunter** » Mon Jan 08, 2007 8:55 pm

So is there anything special needed to run an S8 Escape Elite from 12 volt battery source. I have some 1200 mAH batteries I pulled from some old UPS units that had their electronics fried. The batteries are all aok. I'm wanting to make me a portable battery system for using my CPAP while camping. Do I need the special 12 volt DC or not? Will I damage my machine without one?

Patrick A · Post by **Patrick A** » Tue Jan 09, 2007 12:24 am

I have two Remstar machines a remstar plus and a Remstar pro-2 I bought a 12vdc cord from the dme that i got my first machine from. You can get a

Manufacturer: Respironics

This is a 6 foot long cable that can be used to hook any Respironics machine (CPAP or BiPAP) with a 12 volt jack to 12 volt power. One end attaches to the machines 12 volt jack and the other plugs into a cigarette lighter (power point). If you wish to run directly off a battery, you will need to procure this cable and the 12 volt Battery Adapter Cable we also sell. That part has battery clamps on one end.

The Puritan Bennett Battery Pack is a system that could also be considered for remote 12 volt operations.

This cannot be used on the Bipap Pro 2 or the Bipap Plus. You have to purchase the DC Power Kit Bipap Pro 2/Plus that we sell.

12 volt DC Power Cord (connects CPAP to cigarette lighter socket)
$ 24.95

Part Number 1001956: 23 currently in stock

at cpap.com
https://www.cpap.com/productpage/respir ... Good luck

chrisp · Post by **chrisp** » Tue Jan 09, 2007 8:55 pm

I've been running from a battery for 2 years now with my 420E. A battery actually puts out about 13.2 volts . At 12 v its nearly dead. The car charging system delivers 13.5 -14.6 volts. Notice the dataplate on the 420E . Input 13 volts. My battery normally can power my 420E for a week however I charge it daily so it lasts longer but in a pinch it could last 2 weeks. I use a 15 watt solar panal to keep it charged as well as a auto battery charger as backup.

:twis ted:

DreamStalker · Post by **DreamStalker** » Wed Jan 17, 2007 8:36 pm

So no inverter is needed to run the S8 or the Remstar "tank"? ... instead only an adapter cable/wire set having the correct polarity (where Remstar is opposite that of S8 ) is needed to connect straight from the battery?

In other words these CPAP.COM products are not needed?

https://www.cpap.com/productpage/respir ... -cord.html

https://www.cpap.com/productpage/DC-12-Inverter.html

Craig-Tx · Post by **Craig-Tx** » Wed Jan 17, 2007 9:45 pm

DreamStalker wrote:
In other words these CPAP.COM products are not needed?

https://www.cpap.com/productpage/respir ... -cord.html

https://www.cpap.com/productpage/DC-12-Inverter.html

The Respironics machines take 12V DC which is the "nominal" output of a vehicles power port. It would appear that the Respironics power cord is strictly a cord with the right ends. However, it is possible that there is some electronics internal to the wire that prevent over voltages / spikes from reaching the xPAP.
I would like to hear from someone who knows if this is the case.

One thing that could pose a problem would be if the vehicle is running. A running vehicle can put out up towards 16 - 18V to charge the battery. Does anyone know if a machine can handle this?

The DC cable for the S8 seems a bit more sophisticated. It specifically states that it can work on 12V or 24V so it has to have some voltage conversion / regulation to it.

Goofproof · Post by **Goofproof** » Wed Jan 17, 2007 10:55 pm

Craig-Tx wrote:
DreamStalker wrote:
In other words these CPAP.COM products are not needed?

https://www.cpap.com/productpage/respir ... -cord.html

https://www.cpap.com/productpage/DC-12-Inverter.html

The Respironics machines take 12V DC which is the "nominal" output of a vehicles power port. It would appear that the Respironics power cord is strictly a cord with the right ends. However, it is possible that there is some electronics internal to the wire that prevent over voltages / spikes from reaching the xPAP.
I would like to hear from someone who knows if this is the case.

One thing that could pose a problem would be if the vehicle is running. A running vehicle can put out up towards 16 - 18V to charge the battery. Does anyone know if a machine can handle this?

The DC cable for the S8 seems a bit more sophisticated. It specifically states that it can work on 12V or 24V so it has to have some voltage conversion / regulation to it.

DreamStalker · Post by **DreamStalker** » Thu Jan 18, 2007 12:37 pm

No problem with running auto for me ... I'll be using a 12V AGM deep cycle battery indoors.

It is just that I had read Doug's (DSM) post and I just wanted to confirm that both the S8 and Respironics "tank" models would run straight from the battery w/o inverter.

AltPwrPuffer · Post by **AltPwrPuffer** » Fri Jan 19, 2007 6:13 pm

I'm not familiar with the S8, the Remstars run on 12volt dc, it's just that the humidifiers require 120volt ac. So if you can get by without humidification a battery should run the machine for many days at 12volts.

Machine