hi black spinner. My old machine still works so I could consider using that as a back-up. It's over 5 years old and I was having problems with recurrent vascular rhinitis that I suspected was related to the machine. Hence a new one. No episodes of rhinitis yet so I'm crossing my fingers.

Thank-you palerider. I wasn't aware of the button on the cigarette lighter end. I tried it again and it works! Very appreciative of the help from this forum!

Thank- you for your quick response krelvin. I did read the info in your attached links and found them helpful - especially the one on the AGM battery. I know just what I need to buy now if I go that route. That would be my second choice though. We do camp in a camper but I do sometimes travel by pla...

I have a Novacell ion battery that I used for my Resmed Series M while camping. I now have the Resmed AirSense 10 Elite and none of the adapters fit into the back of my machine. I know absolutely nothing about batteries and nothing that I am reading makes sense to me. I called a CPAP online company ...