The battery BMS Board was encrypted. So, after the replacement of the battery shows ***"Unknown part". This battery carries the Battery health data too. If such happen then the analytic report also missing. So, if you replace the battery then you have to replace the BMS board too. This also*** happened ***to my 12 pro max and I fixed this. The method to fix*** [link|https://youtu.be/LsN7dsQS2lk|unknown parts|new_window=true] ***after battery replacement may need experience do it carefully.***