Most of the Toyota BZ’s have Chinese batteries so it’s very likely the cars being reviewed have these. The RZ will only have the Toyota / Panasonic produced batteries so they may have considerably better properties. However as the RZ will be AWD I suspect that it will have the same battery as the AWD Toyota which is the subject of a concerning article, albeit American. It reports what Toyota have been formally saying, rather than expressing an opinion. It is reported that Toyota have said -
And on the AWD variant of bZ4X, which has a different battery pack than FWD model, Toyota (initially) straight up says DC charging may not work when below 32 degrees Fahrenheit (freezing point)This was later changed to ….. for the bZ4X AWD model, charging may slow down more than other models in weather conditions below 32 degrees Fahrenheit"
The full article is here - https://www.motortrend.com/news/2023-toyota-bz4x-charging-speed-cold-temperature/
I’ll be asking my dealer whether this applies to the RZ as the range will plummet when driving in freezing conditions and on a long drive it could take ages to charge on DC, (if at all) precisely when you’ll want to charge and get on your way.