About the battery and performance of iPhone 11 and later

Learn about the built-in software and hardware system that iPhone 11 models and later use to reduce performance impacts as your battery chemically ages.

The built-in software and hardware system is automatic, always-on, and works to provide the best possible performance as battery aging occurs over time. The power needs of iPhone 11 models and later are dynamically monitored, and performance is managed so that it can address these needs in real time. The system allows your iPhone to reduce performance impacts from battery aging.

About performance as batteries age

While performance impacts are reduced as much as possible, battery aging might still eventually lead to noticeable, possibly temporary, effects. Depending on the battery state, level of charge, and the tasks that your iPhone is handling, examples might include longer app launch times, lower frame rates, increased processing times, reduced wireless-data throughput, backlight dimming, or lower speaker volume. During the most extreme cases, the camera flash or other camera features might be temporarily disabled.

Check battery health on your iPhone 11, 12, 13, or 14 model

All rechargeable batteries are consumables and have a limited lifespan — eventually their capacity and performance decline so that they need to be replaced. To learn more about your iPhone battery health and if a battery replacement is recommended, go to Settings > Battery > Battery Health & Charging.

Screenshot of Battery Health settings

Get battery information with iPhone 15 models

With iPhone 15 models with iOS 17.4 and later, you can see your battery health, when your battery was manufactured, when it was first used, the cycle count, and if a battery replacement is recommended. Go to Settings > Battery > Battery Health.

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Learn more

* When you use your iPhone, its battery goes through charge cycles. You complete one charge cycle when you’ve used an amount that represents 100 percent of your battery’s capacity. A complete charge cycle is normalized between 80 percent and 100 percent of original capacity to account for expected diminishing battery capacity over time.

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