alt Hacker NewsI think that size of battery would move it into requiring a motorcycle license here in Switzerland, just based on the size alone. And if it goes faster than 45km/h then definitely.
I have my motorcycle license and have been considering getting something that I can ride all day. Only problem is that if it's classified as a motorcycle license I don't think I can take it in the train like a bike if I run out of juice far away.
I know we all carry fully charged batteries in our pockets and sometimes keep them in our ears too.
But something about travelling in crowded and closed space like train with a fully charged diy (or even commercial) battery pack sounds risky.
This is one of the reasons I didn't go for a diy replacement of TWS pair with dead batteries.