Iphone 13pro health data is not allowed.

It is normal. Iphone 13pro has been used for 8 months, and the battery is healthy. This is normal, as long as it is not less than 80%. Sometimes the displayed battery capacity has not changed because the data has not been refreshed, not that it has dropped so much in a month, but that the battery data has been refreshed in the last month; Secondly, as long as the battery capacity is not less than 80% within one year, it is normal.