Thanks everybody.
I called cpap.com and think I'm going to order the Resperonics battery pack. They say it should be good for 21hrs w/pressure set at 12 so hopefully I'll get at least 3 nights.

I'll keep checking back though so keep the info coming and thanks again,

Steve

This machine is 5yrs old, if I spent all that $$ could it be used on another system?
also I'd like more info on using other batteries and what exactly to get.

Thanks,

Steve

I have the Repironics Remstar M series model 1022334 and want to use it camping. I found this: https://www.cpap.com/productpage/respironics-battery-pack-universal-12-volt-dc-cable-kit.html and want to make sure it is the correct unit. Also if I want a 2nd battery do I get this: https://www.cpap.com/...