It seems possible but I wouldn't risk it...
https://youtu.be/CkhGPFXKxa...

Difficult. Glued.

Thanks for the answers. So changing the battery doesn't seem to be as easy as with an A33 5G, for example...

You can have the battery changed by a specialist, with the right tools you can also try it yourself, but I myself advise against it, you need a heating blanket like the iPad, the price is much higher.
It's not worth it yourself, better ask a specialist what it costs to change the battery, maybe surprise!