CATL vs BYD Battery Identification
Updated this Post to make it more useful to others.
I have been struggling to confirm the cell type of my batteries and needed it since I am ware CATL and BYD cell types are not compatible. Since both could be wall mounted in the White Wall Box from my understanding, it created some confusion on my side. Especially so due to the fact that a local distributor has the White Wall Box batteries marked specifically as CATL on their website.
By the looks of things the Batteries with the CATL Cells (Model SSLB1) came standard in a rack mount format and required the wall mount box to be purchased additionally.
The BYD Cell batteries seem to come standard in the wall box (Model SUN-BATT-5.12)
A call to the technical department confirmed that CATL batteries are sold in rack mount format and BYD batteries in the wall box.

BYD battery part number is SUN-BATT-5.12. You can find it on the side of battery