Xiaomi mobile phone in the charging port water did not fast charge may be damaged internal components.
First, the phone's system malfunctioned, which caused problems with the battery level display. This problem is the easiest to solve, you can directly shut down and restart, which is equivalent to data refresh, and the general power display will return to normal.
The charger is in poor contact with the phone. It is also very common that the charger is not plugged in properly due to careless phone users. The solution is simple: change the jack back and forth.
Cell phone battery problem. In general, it's rare to have a problem with your phone's battery.