Connecting a CPAP machine to a battery?

I have a Phillips Respironics unit myself. My TT has a 12 volt socket and i just plug into that with the optional 12 volt cord i received with the unit.
You might check into that option.

I actually run mine on a Li-Ion battery pack when hunting. You cannot run the humidifier, pulls too much juice but I can run my machine for 3 8 hour nights on 2 Li-Ion packs which Cpap.com has on their site.

I use a passive humidifier I made from a plastic quart juice bottle. Works fine.

mileena wrote:
...It is a Philips Respironics DreamStation. I will go to their site and buy a battery....

If you truly need a separate battery, do not buy the CPAP $400 battery pack. Any AGM battery for $100 will do just as well if not better.

Respironics operate on 12vdc and can run directly from a battery with the correct cord. Check your specific model for clarification by looking at the label on the unit.

Are you looking to use this in an RV? Most all RVs already have a 12vdc system you can simply plug into.

FWIW, Resmed units operate on 24vdc and have a converter cord to plug into 12vdc.

The respironics cord is around $25 and the Resmed cord is around $80.

gkainz wrote:
First, please edit your photo sizes - my 2 monitors just about display your pics! :)

Done!

gkainz wrote:

Second, That's the least efficient way to connect your CPAP to a battery. To go from DC to AC and back to DC again - (assuming your CPAP, like nearly all I've had or are familiar with - has the AC to DC brick in the power supply cord, and run off of 12VDC) induces a lot of loss.

CPAP supply companies have portable batteries available specifically for their matching machines, and of course, you pay 2-10x premium for the "name brand" matching.

My most recent CPAP (ResMed) runs off of 24VDC so I'll end up buying the 12 to 24V DC step up transformer and run off a jump start battery pack.

My prior CPAP all used 12VDC, so I made a 12V adapter to plug into a jump start battery pack similar to what you show, but mine had the cigarette lighter socket built into it.

So, a little research on your specific CPAP to see what the input voltage requirements are and you "should" be good without the converter.

Good luck!

Thanks! Yes mine has that battery "brick". It is a Philips Respironics DreamStation. I will go to their site and buy a battery. I've read that they only last 4 hours or so, without the humidifier. We'll see.

First, please edit your photo sizes - my 2 monitors just about display your pics! :)

Second, That's the least efficient way to connect your CPAP to a battery. To go from DC to AC and back to DC again - (assuming your CPAP, like nearly all I've had or are familiar with - has the AC to DC brick in the power supply cord, and run off of 12VDC) induces a lot of loss.

CPAP supply companies have portable batteries available specifically for their matching machines, and of course, you pay 2-10x premium for the "name brand" matching.

My most recent CPAP (ResMed) runs off of 24VDC so I'll end up buying the 12 to 24V DC step up transformer and run off a jump start battery pack.

My prior CPAP all used 12VDC, so I made a 12V adapter to plug into a jump start battery pack similar to what you show, but mine had the cigarette lighter socket built into it.

So, a little research on your specific CPAP to see what the input voltage requirements are and you "should" be good without the converter.

Good luck!

Might want to do some more research on that. I had this same discussion with my Sleep Apnea Dr. a couple months ago. He told me you have to be very careful with the equipment because they are very touchy. Surges can do a lot of damage to your machine.