Models above iPhoneXS can go to Apple to replace the battery after sale, and batteries below iPhone XS can still choose a third party.
Or the battery is unlicensed and the data is not supported.
If the battery shows maintenance, the word "maintenance" will also appear directly on the battery.
There are several situations in which the battery is "repaired".
1, the mobile phone is iPhone XS, XR, XS Max, 1 1 or above. After replacing the third-party battery, the word "Maintenance" will not be displayed. This does not mean that the mobile phone battery is faulty.
2. If the mobile phone is a model below the iPhoneX, after the battery is replaced, some brands of batteries, such as Pinsheng and Huawei Strict, support the display of health, and Apple officials have not stated that these models cannot display health. However, it is not suitable after replacement. It may be that the input data of the brand battery is not done well, which does not mean that the battery is faulty. Need to communicate with the purchased battery brand.
There is something wrong with the battery. It may be an unlicensed battery, the battery can't meet the requirements, and the mobile phone can't identify the battery. If this happens, it can be replaced if it affects the use. The original battery can be replaced in an authorized repair shop.