There is a commercial for a device called "The Air Dragon" on TV, runs on 12 volt, not 120 volt,
I am not big on 12 volt compressors (have 2 or 3) Mine blows the 20 amp Lighter fuse long about 50 PSI and I need 60 for ye old space saver.. But it is enough to get me home to the 120vac Pancake job.. That puppy can hit 150 PSI no tribble.
But I think even my Black and Decker Air station would have an issue on a 115 Watt limit.
One quesiton.. You said that is a 120 volt outlet limted to 115 Watts (less than one amp) Are you sure that is not labeled 115 VOLTS?