Compliance of user replaceable lithium cells?
I Think you are wrong... Smartphones, MP3 Players, Notebooks, fire detectors... all with non replaceable Li-Ion based batteries... same shit here in EU than anywhere in the world
Also you can buy single lithium cells of any kind (18650 cells are normal) - You can even send em by post.
Its just most devices with exchangeable batteries support normal 1,5V cells