My iphone 11 went down 10% of its maximum capacity

Ive been using my iphone 11 for only 6 months and it dropped 10% of its maximum capacity within that time, is this normal? Kinda worried.

iPhone 11, iOS 17

Posted on Jun 15, 2024 6:21 PM

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Question marked as Top-ranking reply

Posted on Jun 15, 2024 6:27 PM

To learn about maximizing (and the difference between) battery life and lifespan, read this support document --> Batteries - Maximizing Performance - Apple


Read this support article about iPhone battery and performance to learn about the battery health feature and what is considered normal performance --> iPhone Battery and Performance - Apple Support

To see the feature go to: Settings > Battery > Battery Health


"A normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers battery service for a charge." A degraded battery may display the notice: "Your battery’s health is significantly degraded. An Apple Authorized Service Provider can replace the battery to restore full performance and capacity." If it is not at or above 80% "normal", consider contacting Apple about a battery replacement. --> iPhone Battery Service - Apple Support


According to the above quoted information, you could be losing almost 2% per month the entire first year before Apple would deem this to merit a warranty replacement.


- Requires iOS 11.3 and for iPhone 6 and newer iPhones only, not iPad or Watch.


Also read this post by ASC contributor Lawrence Finch which has a very user-friendly explanation of battery features --> Bettery health maximum capacity - Apple Community



2 replies
Question marked as Top-ranking reply

Jun 15, 2024 6:27 PM in response to lysander209

To learn about maximizing (and the difference between) battery life and lifespan, read this support document --> Batteries - Maximizing Performance - Apple


Read this support article about iPhone battery and performance to learn about the battery health feature and what is considered normal performance --> iPhone Battery and Performance - Apple Support

To see the feature go to: Settings > Battery > Battery Health


"A normal battery is designed to retain up to 80% of its original capacity at 500 complete charge cycles when operating under normal conditions. The one-year warranty includes service coverage for a defective battery. If it is out of warranty, Apple offers battery service for a charge." A degraded battery may display the notice: "Your battery’s health is significantly degraded. An Apple Authorized Service Provider can replace the battery to restore full performance and capacity." If it is not at or above 80% "normal", consider contacting Apple about a battery replacement. --> iPhone Battery Service - Apple Support


According to the above quoted information, you could be losing almost 2% per month the entire first year before Apple would deem this to merit a warranty replacement.


- Requires iOS 11.3 and for iPhone 6 and newer iPhones only, not iPad or Watch.


Also read this post by ASC contributor Lawrence Finch which has a very user-friendly explanation of battery features --> Bettery health maximum capacity - Apple Community



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My iphone 11 went down 10% of its maximum capacity

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