Apple's official suggestion is that when the maximum battery capacity (also known as battery health) drops below 80%, the battery needs to be replaced. Of course, this refers to the replacement of batteries during the warranty period. Based on everyone's own habits, no matter how healthy the battery is, it doesn't need to be replaced if normal daily charging can be maintained.
2. Low frequency of use
There is indeed a user whose battery is only 70% healthy, but because he doesn't use his mobile phone often after the warranty period, he can maintain 70% of the battery capacity by charging once a day. Since the utilization rate is not high, you don't have to worry about the battery problem, just keep using it.
3. Mobile phones are used frequently.
If you often feel that the battery of iPhone is not enough, even if your health is above 80%, you can consider replacing it with a new battery to increase the extra use time. As for the batteries with health above 90%, if you really think the batteries are not enough, it is not recommended to change them, because there may be no improvement after changing them. After all, they are all new batteries.
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Precautions for battery replacement:
1. Replace the original battery
Unless the budget is really tight (for example, iPhone 1 1 the price of replacing the original battery is 5 19 yuan), it is recommended to replace the original battery of iPhone.
The reason is that replacing the third-party battery may continue to be used, but the iPhone may pop up a warning, or the battery health may not be checked. Even if these are normal, the quality of third-party batteries is different, and the third-party batteries are often replaced quickly, and even extreme cases such as fire or explosion of mobile phone batteries occur.