Susie,
I'm not familiar with your machine. Can it be used with a 12v battery - ie. can you plug it into the cigarette lighter and run it? If so, then a battery power pack (the jump start systems) will work. The size of the battery pack and the draw of your machine will determine how long the battery pack will run the machine. I have 2 battery packs, which will each run my particular machine for 2 nights or longer, without the humidifier. This is the type of battery I'm talking about, but there are many different sizes and manufacturers.
http://www.autobarn.net/vec022c.html
Hope this helps.
Debbie