Thank you for contacting CPAP Supply USA.COM.
It is NOT recommended that you use a generator to power your CPAP. You run the risk of ruining your CPAP..
There are CPAPs that come with a battery, such as the Aeiomed Everest 2, that will allow you to use your CPAP from the battery power.
Some people purchase a second battery to have as a back up or to be charging while the first one is in use.
Please check our website www.cpapsupplyusa.com for more information.
Debbie Shirley,RRT