Mobile phone batteries are consumables. The battery of the mobile phone has begun to wear and tear since the day it produced . When the battery health reduced , it will affect the use of the mobile phone . So when do you need to replace your phone battery ?
Generally speaking, when the iPhone battery has been recharged more than 500 times, that is, after using the iPhone for about 14-18 months, the battery life will decrease, and the battery health is about 80%. At this time, you can consider replacing the battery. Moreover, Apple has stipulated that if the battery efficiency is lower than 80% within the warranty period, the battery replacement is free.
iOS 11.3 has added battery status monitoring, and you can check the battery health . If the battery loss is not large, the SoC of the iPhone will operate at full speed and peak performance; once the battery loss is detected to be too large, the battery health is only 80% , it will remind you Maintenance. And provides a performance switch for you to choose, one is to operate at full speed but may restart with a black screen, and the other is to operate at reduced frequency to ensure stable use. You can choose stability and efficiency freely.
Apple official: "As the life of the battery gradually shortens, the battery's stored power and power supply capacity will decrease. When this happens, the battery may need to be charged more frequently, and your iPhone may also shut down unexpectedly. .This is not a security issue. This notification is intended to remind you that the battery may need to be replaced. You can continue to use your iPhone until the battery is sent for inspection. In the meantime, you may notice these changes in your device : longer app launch times, lower frame rates when scrolling, and other degraded device performance."
Many people think that it is too early to replace the battery when the battery health is 80% . This is actually a misunderstanding. For example , the design capacity of iPhone 8 Plus is 2675mAh, and the iOS system shows that the battery health is 100% when it is first used.
When the system shows that the battery health is only 80%, the capacity of this iPhone 8 Plus after fully charging is only 2140mAh. In daily use, when the iPhone 8 Plus shows battery health is only 80%, it means that the battery capacity of this phone is only 64% of the theoretical capacity, which is 1712mAh.
From the perspective of battery life, when the iOS system shows that the battery health is only 80%, the mobile phone basically needs to be charged twice a day. For this reason, the best time to replace the battery is when the iOS system shows that the battery health is below 80%.
