According to Apple’s official instructions, the iPhone’s battery can retain up to 80% of its original capacity after 500 full-charge cycles. If the battery’s storage capacity is below 80%, the power consumption will increase and the performance will also be affected. An author of a recent well-known technology website ZDNet found that after using iPhone 8 Plus for about 4 months, although the number of use is small, the battery's charge cycle has reached 91 times, that is, as long as the phone uses about 18 In a month, it reached the 500 charging cycles officially described by Apple. He had expected that the average iPhone would take about 36 months to reach 500 charge cycles, but the actual performance of the iPhone 8 Plus may be only half as expected.
Image shows battery test results for iPhone 8 Plus using macOS program CoconutBattery
However, his iPhone 6 Plus has more than 800 charging cycles since its launch, but the battery power can still maintain more than 80%, maybe the iPhone 8 Plus's battery life will be longer than expected, but the iPhone 8 Plus's charging cycle is always better than Since the old iPhone was upgraded faster, he thought that the reason was that the wireless charging and fast charging functions accelerated the number of charging cycles, resulting in increased battery loss and accelerated battery aging.
If this is an iPhone user that will be replaced every year, this may not be a big problem, but if you plan to use it for a long time, you may have to pay more attention to the problem of battery wear.