When possible, I travel with my Molift 150, which, when flying, I carry in the hard luggage case. Because it is medical equipment there is no charge by the airline. There is some space inside the case. Am I allowed to pack medical supplies inside as well, or is it limited strictly to medical equipment?

Anymore when possible I like to ship supplies to the hotel (either from home, or Amazon), as disposable pads, gloves, and wipes can be bulky, but it'd save some $ to be able to stuff them in the lift case. I always pack my meds, catheters, and chair charger in my carry-on.