How long can the 80% health of Apple 12 battery last?

Apple 12 battery is 80% healthy and can be used for 2 years. The health of Apple battery is 80%, which means that the battery capacity is 80% and the capacity has been lost by 20%. The battery of iphone 12 can be used for about one year, and the battery of mobile phone has a cycle life. The longer it is used, the lower the health of the battery. Apple's mobile phone battery life is only 83, and it needs to be replaced when it reaches 60%. After the lithium battery of Apple mobile phone is aged, the resistance of the battery will increase obviously, so the battery can release less electricity, so the capacity will become smaller, and there is a memory effect, so the capacity of the battery will be further reduced. In two years, the cell phone battery will only be 80% of its original capacity; Frequent background killing will lead to a new round of hot startup when the application is restarted, which will not only prolong the startup time, but also occupy additional memory, thus increasing battery consumption. This answer is just the opposite of usual cognition.