Glad you dodged the bullet.
You should stop by your local auto parts store for a power converter. They plug into an accessory port (where cigarette lighters did before everyone went Politically Correct) and convert DC power to AC. Plug the 'bator in; it'll run off the car battery.
Sally posted a section in the beginning on this and other ways to handle the "lost power" situation
YES! I used to have one of those, I have GOT to get another one. Uggh.