I tried Ctrl+F searching to see whether anyone here had pasted the link to the law, and didn’t find anything, so I went to Presearch and found this, which appears to be the official European Union log for it, and has attached PDFs at the end with what seem to be the nitty-gritty for further reading…

https://www.consilium.europa.eu/en/press/press-releases/2023/07/10/council-adopts-new-regulation-on-batteries-and-waste-batteries/

If I’ve found an errant page that just looks official, please link something better for those looking for the legalese