Monitor the health of your iPhone battery by viewing the number of charge cycles it has undergone.
Is the battery life of your iPhone starting to decline? On its site, Apple explains that a “normal battery is designed to retain up to 80% of its original capacity after 500 full charge cycles.” You can also easily check the remaining charge capacity of your battery from Settings> Battery> Battery status. In other words, after 500 charge cycles, the autonomy of your iPhone may be cut off by a fifth of its total charging capacity.
Unfortunately, Apple doesn’t go into details, and that percentage doesn’t tell the exact number of charge cycles your iPhone has gone through. While there is third-party software on Windows or macOS to get your battery charge cycle count, there is no official solution offered directly on iOS. Unless you go and get this data directly from the analysis data of the iPhone.
1. Find the analysis data
Open iOS Settings and go to the Privacy menu. Scroll through the options, enter the Analysis and Improvements menu and then navigate to Analysis Data.
A huge list of scan data from your device is displayed. The data is organized in alphabetical order. Locate the file log-aggragated-yyyy-mm-dd-xxxxxx.ips, or yyyy-mm-dd represents the date in the most recent year-month-day format.
2. Copy the analysis data
Then select all of the text in the file and copy it. To do this, keep your finger pressed, then using the blue handles, select all the text. Then press Copy.
Close Settings and open a new Note in the appropriate app. Paste the contents of the clipboard (the analysis data) that you just copied.
3. Find the number of charge cycles
Then tap the share button on your note to display the options and tap Find in note. Type BatteryCycleCount in the search field and confirm by pressing OK.
The row for the number of iPhone battery charge cycles should automatically be highlighted. You will find under this line, between two tags integrate, the number of charge cycles of your device’s battery.