How long will Huawei's mobile phone battery health drop from 89 to 80?

From 1 to 3 months, according to the query of Huawei official website, the decline of Huawei's mobile phone battery health depends on the user's usage habits. Users use it according to the correct charging and discharging method. Every once in a while, that is, 1 to 3 months, the battery health of Huawei mobile phones drops from 89 to 80. It is normal that the battery health of Huawei's mobile phones will drop a little every once in a while. The reason is that with the passage of time, the service life of the battery will gradually decrease, and the use environment of the battery will also affect the health of the battery.