So I normally went with my day, charged my phone from 20% to 90%, usually I charge from 20% to 100%. Earlier on I checked my battery life and it was 98% but tonight after checking again accidentally I realized it was at 97%. I had an IOS update last night, used the phone today for around 10 hours because I’m on vacation but had a work emergency. Should I be worried
[Re-Titled by Moderator]
iPhone 14, iOS 18
Batteries, like people are individuals. No two people age exactly the same and batteries don’t age the same either. The exact usage, chemical makeup, storage conditions, exposure to heat and cold and about a dozen other factors mean that every battery ages differently. Battery aging is not a linear (straight line) and degrades at different rates as the chemicals in the battery age and other factors mentioned above. The graph below shows the 4 batteries that were recharged differently and look how differently the batteries capacity changed with age. There is nothing linear in the aging process.
Apple expects your battery health to be at 80% after 24 months. If your battery health misses that expectation, contact Apple Support.
Please review the Apple Support articles on battery optimization. It contains the best current practices for battery charging.
About Charge Limit and Optimized Battery Charging on iPhone - Apple Support
iPhone Battery and Performance - Apple Support
Batteries - Maximizing Performance - Apple
About the battery and performance of iPhone 11 and later - Apple Support
Batteries, like people are individuals. No two people age exactly the same and batteries don’t age the same either. The exact usage, chemical makeup, storage conditions, exposure to heat and cold and about a dozen other factors mean that every battery ages differently. Battery aging is not a linear (straight line) and degrades at different rates as the chemicals in the battery age and other factors mentioned above. The graph below shows the 4 batteries that were recharged differently and look how differently the batteries capacity changed with age. There is nothing linear in the aging process.
Apple expects your battery health to be at 80% after 24 months. If your battery health misses that expectation, contact Apple Support.
Please review the Apple Support articles on battery optimization. It contains the best current practices for battery charging.
About Charge Limit and Optimized Battery Charging on iPhone - Apple Support
iPhone Battery and Performance - Apple Support
Batteries - Maximizing Performance - Apple
About the battery and performance of iPhone 11 and later - Apple Support
No, and it probably just dropped a 1/10 of a point. For example 98.0 is shown as 98% and 97.9 is shown as 97%
You can usually see around 1% of battery health reduction per month. So, at 8 months, you are doing just fine.
No worries
Lol. It’s been 8 moths of usage and this never happened before so I was pretty worried
100
Battery health degradation from 98% to 97% after iOS update and heavy usage
