Not a generator. You need a sealed AGM deep cycle battery with a min rating of 35Ah. Also the Resmed 12V adapter and a trickle charger for the battery. The battery won't be light, but you need something with at least that much of a rating. You cannot run it with humidification or heated hose, or you will drain the battery in 6-7 hours to almost completely empty which would be very bad for the battery. Having a back up power source is good, but make sure you get the right kind of equipment.
Marillion - Excuse my ignorance. I don't know anything about batteries and a trickle charger. Will you explain just how this whole process would work - not just the required equipment. Would I charge the battery in my garage with the trickle charger, carry the battery to my bedroom and attach it to my machine with the Resmed adapter. How to I keep the AGM deep cycle battery working without electricity. Does it run on Kerosene? So could I even charge it in my garage? How heavy is the battery?
I am kind of losing interest in this process, although I do worry about being without electricity.
Thanks for your help.
Sleepytimegal