Apple's battery is healthy and 90% normal, indicating that the battery life is lost, but the battery life does not affect the use and can be replaced. The design life of Apple's mobile phone battery is generally around 500 cycles. After one year of normal use, the mobile phone will have obvious battery loss, and the battery health is generally between 80% and 90%. If the battery health is less than 80% during the warranty period, it is recommended to go to Apple for after-sales replacement.
The situation of battery replacement
1, mainly depends on whether your use time and battery life affect your daily use.
2. Generally speaking, the design life of lithium battery is about 500 cycles. Generally speaking, after charging for one day, you will feel that the power will drop significantly after one and a half years.