Two weeks before the flight, I called the airlines. When I called Qantas (the flight up), the guy knew exactly everything about my scooter. I was told I was fine to fly as long as I took the battery out and carried it as cabin baggage. Then I called Virgin Australia (the flight back down) and the lady I spoke to knew nothing about my scooter, but told me the same thing about the battery. Imagine my joy when checking in at Melbourne to be told that I "could take the scooter but had to leave the battery behind". Oh pardon? After a few moments, she did clear the battery to fly. Apparently the guy I spoke to didn't tell me that I needed a "dangerous goods code". I boarded the flight a little bit miffed. It's great fun when you get differing information from the same airline. One of the main reasons I bought the Luggie, other than it being fold-able and easy to use, was the airline option - the Luggie battery is well within Australian airline regulations - but I seem to have got someone at check-in that was very thorough and I learnt all about lithium batteries very quickly. Once we did hit Sydney, I spent a good 45 minutes on the phone to Virgin to make sure I was not going to have issues on the way back. Turns out, Virgin doesn't need you to get a code, you just need to add that you're flying with a lithium battery on your reservation and when I did get to check-in, I was cleared to fly with the battery straight away. I think I may be traveling with Virgin exclusively if I'm taking the Luggie next time!
One more thing - in searching for all things public transport, I did stumble across something very interesting. If you use a wheelchair or a scooter on trains, trams and buses, you can apply for a special PTV travel pass Myki here in Melbourne that gives you free travel. I guess it's to free up taxis and encourage people like me to use the service. Of course no one tells you these things and I only just purchased a new Myki! I'm applying tomorrow. If I get it, expect to see me out and around the place more!