In addition to the charging cycle, there are other factors that affect lithium batteries, so pay more attention to maintenance when using them. If the temperature of the lithium battery is lower than 5℃ or higher than 35℃, it will cause damage to the battery. We should try to keep the mobile phone at an appropriate temperature to reduce the natural loss rate of battery health. The voltage of lithium battery should be avoided to be too high and too low, and the battery capacity should be kept between 25% and 75%.
battery life
The core factor affecting the life of iPhone battery is "the increase of battery chemical age". The chemical age of batteries is not calculated by years, but by cycles. The speed of battery health loss varies from person to person, because everyone uses mobile phones to different degrees. If you "charge twice a day", you may be able to use 80% of the battery in one year. If you "charge once a day" or rarely use your mobile phone, you may use less than 80% in two years.
According to Apple's official standards, if the health of the iPhone battery is higher than 80%, it is normal, and there will be no frequency reduction and unexpected shutdown. When the battery health is lower than 80%, it is in an unhealthy state and needs to be replaced with a new battery after sale.