Just bought iphone 15 on 23 September and its not even a month just had 25 cycle and my battery health dropped to 99% , why is that? It it normal cause i use phone only for browsing and i play game like 10-15 min only to complete some daily tasks i play on laptop only. Charge phone once a day while keeping charge between 20% to 90% . So it it any kind of serious problem ?
iPhone 15, iOS 17
Perfectly normal.
Batteries degrade over time with usage due to chemical aging, that's just how they work.
You can expect about a 1% drop per month with average use on an iPhone. This is an approximation, that is why it may be plus or minus a few percent on a month to month basis.
Apple recommends replacing it when it reaches 80%. To check your battery health, go to Settings > Battery > Battery Health.
iPhone Battery Replacement.
iPhone Battery Repair & Replacement - Apple Support
About Lithium Ion Batteries
iPhone battery and performance - Apple Support (IN)
Here are some tips on maximizing battery life.
Batteries - Maximizing Performance - Apple
Is it normal that battery capacity 99% after 25 cycle ?
