Yeah, if they are consistent in denying the batteries, it sounds like the flyer just didn’t do his research.
He should have brought a non-powered wheelchair.
Or they could buy one at Walgreens for $79. If they can afford to fly, they can afford to buy a wheelchair. Probably could rent one somewhere much cheaper.
Depending on how often the airline runs into this, the airline should keep some wheelchairs on hand and rent them out. Or arrange a rental at the flyer’s destination.
Did he get the $2000 battery back after his return flight?
“Lithium-ion batteries are a potential fire hazard, but global standards issued by the International Air Transport Association (IATA) allow people with disabilities to travel with compact lithium batteries for medical devices in carry-on luggage.
Hodge said no one from CATSA or United Airlines would listen to him or read IATA documents he had printed out, showing his batteries are permitted on board if an airline gives prior approval. Hodge had received that permission.”
Sounds like you didn't read the article. He showed up with printouts of Canadian regulations saying it was okay with prior airline permission, and printouts of that permission.
Motorized wheelchairs can be rented at the local medical supply shop.