My battery maximum capacity went from 100% to 91% in 10 months bought in October month 2024 and today is 12 August 2025 . Cycle count is 230. Is it normal? And after how much time I should replace my battery ?
[Re-Titled by Moderator]
Original Title: iPad Air m2 11inch Wi-Fi model
iPad Air, iPadOS 18
Battery Health is an imprecise science based upon many factors - but is principally determined by the number of full-charge cycles of the battery
An iPad battery is rated to maintain at least 80% of its initial capacity after 1000 full charge/discharge cycles. As such, assuming that the Battery Health will diminish in a linear fashion, you can expect the indicated battery health to fall by 1% for every 50 full charge cycles - one full cycle being any combination of charging that sums to 100% (e.g. 50 + 20 + 20 + 10 = 100 = 1 full cycle).
Given your quoted 230 cycle count, you might anticipate your battery health will have declined by ~5%. To be clear, battery health is affected by many factors - and will not necessarily fall in a linear fashion.
If you are concerned, you might contact Apple Support and request a remote diagnostic test of your iPad. You can contact the Support Team using the Support link at top-right or bottom-left of this page. Alternatively, you can initiate and manage your support cases from Apple devices using the excellent Apple Support App. If not already installed, the App can be downloaded from the App Store:
https://apps.apple.com/app/apple-support/id1130498044
You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to test and assess your iPad:
Genius Bar Reservation and Apple Support Options - Apple
Battery Health is an imprecise science based upon many factors - but is principally determined by the number of full-charge cycles of the battery
An iPad battery is rated to maintain at least 80% of its initial capacity after 1000 full charge/discharge cycles. As such, assuming that the Battery Health will diminish in a linear fashion, you can expect the indicated battery health to fall by 1% for every 50 full charge cycles - one full cycle being any combination of charging that sums to 100% (e.g. 50 + 20 + 20 + 10 = 100 = 1 full cycle).
Given your quoted 230 cycle count, you might anticipate your battery health will have declined by ~5%. To be clear, battery health is affected by many factors - and will not necessarily fall in a linear fashion.
If you are concerned, you might contact Apple Support and request a remote diagnostic test of your iPad. You can contact the Support Team using the Support link at top-right or bottom-left of this page. Alternatively, you can initiate and manage your support cases from Apple devices using the excellent Apple Support App. If not already installed, the App can be downloaded from the App Store:
https://apps.apple.com/app/apple-support/id1130498044
You might also visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to test and assess your iPad:
Genius Bar Reservation and Apple Support Options - Apple
iPad Air M2 battery health dropped to 91% in 10 months
