My mom has hearing aids that battery up by a electric case. Should she carry it in her carry on or suitcase? How do I go about getting a wheelchair for her?

Lithium batteries are for carry-on only. But more importantly, never check an item you must have, I would keep the ability to charge the hearing aids in my possession.

When you go to the airport park your car curbside and go inside the airport and ask your provider they will call wheelchair company. And you can ask any tsa employee they can give you answer about battery. And what time is your flight