My iPhone battery health degrading fast

My iphone battery health was 100% 2 weeks ago. (i have an iphone 16 pro, been using it 10+ hours a day since late october.)

But, in the last 2 weeks it’s dropped from 100-96%. Why?



[Re-Titled by Moderator]

iPhone 16 Pro, iOS 18

Posted on May 25, 2025 07:32 AM

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9 replies

May 26, 2025 08:01 AM in response to ProppedDaisy2728

Your phone is a hand held computer and computers will glitch from time to time, it's just the nature of the beast and can cause heavy battery usage. When this happens, try a forced restart to clear up the problem.


• Press and quickly release the volume up button

• Press and quickly release the volume down button

• Press and hold the side button.

• When the Apple logo appears, release the button.


Force restart iPhone - Apple Support (IN)


May 25, 2025 07:59 AM in response to ProppedDaisy2728

What are your charge cycles?


You can expect on average a drop of 1% for every 50 charge cycles. The Battery health is only updated when the battery has been able to charge to 100% to recalibrate. The drop is not linear and if the phone was prevented from charging to 100% by manually unplugging too soon, then you won't see the new Battery Health calibration adjustment until it has been allowed to charge to 100%. Even with the Charge Limit option, the phone will still occasionally charge to 100% to recalibrate the Battery Health.


I suspect you are somewhere around 200 charge cycles, which is perfectly normal. Your phone is expected to need the battery replaced after 1000 charge cycles.

May 26, 2025 07:07 AM in response to Mac Jim ID

i actually have a question, so yesterday my phone was warm and acting glitchy (less smooth when scrolling on apps/between app pages) and battery was decreasing faster then usual. i turned on low power mode and it was still going down about 1% every 4 minutes or so, but today it’s not warm and the battery is declining slower and it shows that under battery in settings aswell, i have no idea why it does that sometimes

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My iPhone battery health degrading fast

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