2023-07-09 11:55:05
A phone’s battery sees its performance decrease over time. Its lifespan depends on usage, number of charge cycles and maintenance of the phone. How to check your iPhone battery health?
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What are the warning signs warning you that you need to change the iPhone battery? Good question ! The chemical aging of lithium-ion batteries leads to a reduction in their autonomy: over time, the maximum capacity of the battery decreases, which means that you can no longer fill it to 100%. Its maximum performance (peak power) is also reduced, and its impedance increases, which results in a drop in voltage at the battery terminals and affects its overall operation.
The following signs can be associated with a worn out battery:
autonomy reduced to a few hours or even a few minutes; slower application launches; reduced speaker volume; battery that tends to overheat.
These problems are accentuated when it is cold or the battery is low charged.
Where can I find the battery wear level?
The iPhone battery is designed to retain up to 80% of its original capacity after 500 full charge cycles under normal use. Since iOS 11.3, an application allows you to check the battery status. It’s in Settings > Battery > Battery Status. The maximum capacity of the batteries as well as the activation or not of dynamic performance management. Below a maximum capacity of 80% or if an alert message is displayed in the “Optimal performance capacity” tab, it is a sign that your battery is worn out.
Apps to know when to change the battery of your iPhone
If your iPhone version is earlier than iOS 12, you can download a dedicated battery health analysis app, such as Battery Life, Battery Testing, or Battery iDoctor. The CPU-x app can query iPhone system information, including battery level, capacity, voltage, and wear rate. Please note: if you have iOS 12 or later, these applications will no longer be able to indicate the level of battery wear.
In any case, it is strongly advised to have your iPhone battery changed with Apple (75 euros if the iPhone is no longer under warranty) or with an authorized repairer. There are also toolkits and tutorials for replacing the battery yourself, but this requires some dexterity.
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