How to Check iPhone Battery Health

Charlotte Daniels

iPhone, Tutorials

The battery health of your iPhone is an important aspect to keep track of, as it directly affects the performance and longevity of your device. In this tutorial, we will explore how to check your iPhone battery health and understand what the various measurements mean.

Checking Battery Health

To check the battery health of your iPhone, follow these simple steps:

  • Step 1: Open the Settings app on your iPhone.
  • Step 2: Scroll down and tap on ‘Battery’.
  • Step 3: Select ‘Battery Health’.

Note: Battery Health feature is only available on iPhones running iOS 11.3 or later.

Battery Health Measurements

Once you are on the ‘Battery Health’ screen, you will see two important measurements: Maximum Capacity and Peak Performance Capability.

Maximum Capacity

The Maximum Capacity measurement indicates the overall capacity of your iPhone’s battery compared to when it was new. It is expressed as a percentage.

A higher percentage indicates a healthier battery with more capacity to hold a charge. However, over time, this value decreases as the battery ages and undergoes charging cycles.

If your Maximum Capacity drops below 80%, it is recommended to consider replacing the battery for optimal performance.

Peak Performance Capability

The Peak Performance Capability measurement determines if your iPhone’s battery can deliver sufficient power for peak performance without unexpected shutdowns. This feature was introduced in iOS 11.3 to prevent sudden shutdowns that were occurring on devices with degraded batteries.

If your device’s battery is unable to support peak performance, you may see a message stating, “Your iPhone battery may need to be serviced.” In such cases, it is advisable to have the battery replaced by an authorized service provider.

Tips for Maintaining Battery Health

To ensure your iPhone’s battery health remains optimal, consider the following tips:

  • 1. Avoid Extreme Temperatures: Exposure to very hot or cold temperatures can negatively impact battery performance. Keep your device in a moderate temperature environment.
  • 2.

    Avoid Overcharging: It is recommended to unplug your device once it reaches 100% charge. Extended periods of overcharging can degrade battery health over time.

  • 3. Enable Optimized Battery Charging: This feature, introduced in iOS 13, helps slow down battery aging by learning your daily charging patterns and reducing the time your device spends fully charged.

By following these tips and regularly checking your iPhone’s battery health, you can ensure that it performs optimally and lasts for a longer duration.


In this tutorial, we explored how to check the battery health of your iPhone and understand the measurements provided. It is crucial to keep an eye on your iPhone’s battery health to maintain its performance and longevity. By following the tips mentioned above, you can effectively manage and prolong the life of your iPhone’s battery.

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