The situation of battery replacement
1, mainly depends on whether your use time and battery life affect 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.
Generally speaking, it is normal that the battery health of iPhone is between 80% and 90% after using the mobile phone for one year. If the battery life of your mobile phone does not particularly affect daily use, there is no need to replace the battery;
4. When the number of normal charging cycles of the battery reaches 500 times, the battery should keep at most 80% of its initial capacity. If you check the maximum capacity in Settings-Battery Health during the one-year mobile phone warranty period, if it is 80% or less, you can enjoy free replacement service;
5. During normal use, the battery should always be saturated, and it is best not to use it at the same time when charging; If the mobile phone is hot during use, it is recommended not to use it and let it stand for a while; Always pay attention to the power of your mobile phone. If possible, you can ensure that the power of the mobile phone is above 70%. Too low or even too high power will accelerate the chemical activity of the battery.