The Battery Health screen contains maximum battery capacity and peak performance capacity information. The maximum battery capacity measures the battery capacity relative to the new battery. With the increase of battery chemical aging, the battery capacity will decrease, resulting in a shorter battery service time between two charges. Depending on the length of time between iPhone production time and device activation time, the displayed battery capacity may be slightly lower than 100%.
Normal batteries operate under normal conditions. When the number of charging cycles reaches 500, the battery should be able to maintain 80% of its initial capacity at most. One-year warranty includes service guarantee for defective batteries. If the warranty period is exceeded, Apple can provide battery service for a fee.
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Improve battery performance in an all-round way
"Battery life" refers to the time that a device can be used before it needs to be recharged. "Battery life" is the total use time of the battery before it needs to be replaced. One factor that affects battery life and battery life lies in the various ways you use the equipment. No matter how you use the equipment, there are always some ways to help you.
The life of a battery is related to its "chemical age". This age not only refers to the passage of time, but also includes different factors, such as the number of charging cycles, battery maintenance methods and so on. Please follow these tips to fully improve battery performance and help extend battery life. For example, store the iPhone for a long time and keep half the power.
Apple -iPhone battery and performance