I think @joanp uses one and has been to Japan twice – maybe he can comment too.

Hello.

When you say “smart drive”, do you mean a drive unit that can be added later?

I think it depends on the airline’s rules, not IATA’s.

I think the biggest problem is the battery specifications. I recommend checking with the airline.

Regards.

Tak

Dear Victoria

Hello!

What type of store are you thinking of going to?

I can give you various advice depending on that.

I work in the nursing care industry in Osaka, and also run a taxi company and a travel guide.

I hope I can be of help to you.

Regards.
Tak

Dear Victoria
Hello! Any questions are welcome. I’m looking forward to hearing from you.
Thank you.

Tak

It will likely work, but take a bit longer to charge than usual. If both are yours, I suggest bringing the first one you sent.