There are different categories of removable.
With my old Note, I had an extra battery that came with case/charger combination. If my battery on my phone died, I could swap the battery in 10 seconds.
It states that any battery should be removable and replaceable by the user. So this slap on tactic will only work if your device has no internal battery.
I also noticed this is for all batteries. Not just phones, but also cars etc.
EDIT: As any EU law there is a lot of nuance and exceptions. I dig a little further and found the following:
The regulation introduces requirements that say that portable batteries should be easily removable and replaceable by the end-user and LMT batteries and cells in LMT batteries should be easily removable and replaceable by an independent professional.
So what is LMT?
The regulation defines five battery categories depending on how the battery is used:
- Portable batteries
- Light means of transport (LMT) batteries
- Starting, lighting and ignition (SLI) batteries
- Industrial batteries
- Electric vehicle (EV) batteries
I couldn’t find any concrete wording for “easily removed and replaceable”. But I sure hope it means no more glue for the portable batteries.
Source: https://www.intertek.com/blog/2023/08-17-battery-regulation/