Relevant to travel:
I’ve used CPAP machines on BA, QF, and EK airplanes many times since first doing so in 2013, always connected to the plane’s AC power supply and have never (previously) had a problem – until now.
Similarly, I've used CPAP on QF, CX, AY, AA on AC power without issue, but had a similar problem in January this year on EK. We'd flown QF MEL-DXB in F on QF, then were coming home in F on EK via SIN (all on QFF points booked through QF. My CPAP machine usage is listed in my QF passenger profile). We flew DXB-SIN departing at the ungodly hour of at 0345 out of DXB in F: not off to a good start as the doors on my suite were jammed open and the pop-up drink drawer was stuck half open so couldn't get soft-drinks out and couldn't push it down to turn off light inside it - bl##dy hopeless!).
I put my CPAP on and went to sleep. Two hours later I was shaken awake, telling me to disconnect my AirMini as "it is a danger to the electrical system on this aircraft". I complied, took off my mask, turned the Airmini off and went back to sleep.
I was shaken awake again 30 minutes later. "What now?" "You must pack your CPAP machine into your luggage!" "I'm not using it!" "Doesn't matter, you must pack it away as we can't keep watching you!" In F my hand carry-on is down the front of my suite, so I stood up to retrieve it. The FA then removed my mattress and brought the seat up to its upright position. I packed away the CPAP machine and asked for my mattress. "Sorry, sir, we can't let you have it any more, but you would you like a shower?" "No it's now 7am DXB time and I've had no sleep - I want to get another couple of hours' sleep" "Sorry but you can have a shower early, perhaps a champagne?...."
"May I use my laptop?" "Yes, of course, sir" "May I connect it to the aircraft power?" "Yes sir you may".
"My laptop power supply draws 65W." "No problem sir" "But you won't let me use my 20W AirMini!"
"It uses a different sort of electricity......" I gave up.
On landing at SIN. I enquired about using the machine on the SIN-MEL sector in 3 days' time. I was told that I needed special forms that, along with a certificate from my doctor, had to be with Emirates 72 hours before the flight. That couldn't be arranged in time so I dropped the subject completely.
Three days later I was boarding the SIN-MEL flight. My boarding pass buzzed red and I was called off to one side. I was asked if I was carrying my CPAP machine. I replied I was. I was then told "You must not take it out of your carry-on. We have informed the CSM that you are carrying that machine and he has instructions to watch you throughout the flight!" (You naughty naughty schoolboy, you!). Was this really the legendary Emirates first class experience I'd heard so much about?
On coming in to MEL the following morning, the CSM was doing his rounds and asked me how the flight was. Very sarcastically I said "well you should know, you've been told to watch me all night." He looked at me in total disbelief. I then related what had happened to me on the DXB-SIN flight and at SIN airport. He apologised profusely, appalled at the treatment - he said he'd not been "warned" about me. He also said that Emirates' policy on CPAP machine caused him many issues with passengers all annoyed at being told that they couldn't use their machines onboard.
Fired up, I filled out their online complaint form (when you ring them, they fob yuo off, directing you to their website). That was January. I've not heard anything back from Emirates since then.
I'm still angry about my treatment (but you might have guessed that!).