In terms of battery health, the maximum capacity of 100% means that the battery has almost no loss. The lower the capacity, the shorter the battery can be used after it is fully charged. Generally speaking, if it is less than 90%, the sense of use will become worse. If it is lower than 80%, you can consider changing the battery. If it is lower, the mobile phone will not work well. Peak performance represents whether the phone can be down-converted. Generally, more than 70% batteries can support normal peak performance, and less than 70% batteries should be replaced.
Extended data
Precautions for battery use
1, Apple phones are all built-in batteries, and battery replacement needs to be disassembled. Do not unpack, modify or destroy the battery without authorization. You need to find a professional to repair and disassemble the battery.
2. Lithium batteries can generally be charged and discharged for 300-500 times. It is better for lithium batteries to be partially discharged, rather than completely discharged, and try to avoid frequent and complete discharge. The aging speed of lithium battery is determined by temperature and charging state.
3. Try to charge the battery to 40% and place it in a cool place, so that the battery's own protection circuit can work in a long storage period. If the battery is fully charged and left at high temperature, it will cause great damage to the battery.