I want to know about my phones battery mAh

Hi Sam2912,

Thank you for participating in the Apple Support Communities. We understand you'd like to know more about your iPhone's battery health. This article provides information about this: iPhone Battery and Performance

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Battery Health

For iPhone 6 and later, iOS 11.3 and later add new features to show battery health and recommend if you need to replace the battery. You can find these in Settings > Battery > Battery Health (with iOS 16.1 or later, find these in Settings > Battery > Battery Health & Charging).

Additionally, you can see if the performance management feature, which dynamically manages maximum performance to prevent unexpected shutdowns, is on, and you can choose to turn it off. This feature is enabled only after an unexpected shutdown first occurs on a device with a battery that has diminished ability to deliver maximum instantaneous power. This feature applies to iPhone 6, iPhone 6 Plus, iPhone 6s, iPhone 6s Plus, iPhone SE (1st generation), iPhone 7, and iPhone 7 Plus. Starting with iOS 12.1, iPhone 8, iPhone 8 Plus, and iPhone X include this feature; iPhone XS, iPhone XS Max, and iPhone XR include this feature starting with iOS 13.1. Learn about performance management on iPhone 11 and later. The effects of performance management on these newer models may be less noticeable due to their more advanced hardware and software design.

Devices updating from iOS 11.2.6 or earlier will initially have performance management disabled; it will be reenabled if the device subsequently experiences an unexpected shutdown.

All iPhone models include fundamental performance management to ensure that the battery and overall system operates as designed and internal components are protected. This includes behavior in hot or cold temperatures, as well as internal voltage management. This type of performance management is required for safety and expected function, and cannot be turned off.

Your battery's maximum capacity

The Battery Health screen includes information on maximum battery capacity and peak performance capability. Maximum battery capacity measures the device battery capacity relative to when it was new. A battery will have lower capacity as the battery chemically ages which may result in fewer hours of usage between charges. Depending upon the length of time between when the iPhone was made and when it is activated, your battery capacity may show as slightly less than 100%.

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. Learn more about charge cycles.

As your battery health degrades, so can its ability to deliver peak performance. The Battery Health screen includes a section for Peak Performance Capability where the following messages may appear.

Performance is normal

When the battery condition can support normal peak performance and does not have the performance management features applied, you'll see this message: Your battery is currently supporting normal peak performance.

Performance management applied

When the performance management features have been applied, you'll see this message:

This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. Performance management has been applied to help prevent this from happening again. Disable…

Note that if you disable performance management, you can’t turn it back on. It will be turned on again automatically if an unexpected shutdown occurs. The option to disable will also be available.

Battery health unknown

If iOS is unable to determine the device battery health, you'll see this message: This iPhone is unable to determine battery health. An Apple Authorized Service Provider can service the battery. More about service options…

This may be due to having an improperly installed battery or an unknown battery part.

Performance management turned off

If you disable the applied performance management feature, you'll see this message: This iPhone has experienced an unexpected shutdown because the battery was unable to deliver the necessary peak power. You have manually disabled performance management protections.

If the device experiences another unexpected shutdown, the performance management features will be re-applied. The option to disable will also be available.

Battery health degraded

If battery health has degraded significantly, the below message will also appear:

Your battery’s health is significantly degraded. An Apple Authorized Service Provider can replace the battery to restore full performance and capacity. More about service options…

This message does not indicate a safety issue. Your battery can still be used. However, you may be experiencing more noticeable battery and performance issues. A new replacement battery will improve your experience. More about service options.

Important Battery Message

If you see the message below, it means the battery in your iPhone is unable to be verified. This message applies to iPhone XS, iPhone XS Max, iPhone XR, and later. Unable to verify this iPhone has a genuine Apple battery. Health information not available for this battery. Learn more...

Reported battery health information is not available. To have your battery checked, contact an Apple Authorized Service Provider. More about service options.

Learn more about this message as it appears on iPhone 11 and iPhone 11 Pro and later.

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Also, follow these tips to maximize your battery's lifespan: Batteries - Maximizing Performance - Apple

Take care.

As per the latest MacTracker app data, the 14 Pro sports a 12.38 watt-hour Li-ion battery with 3200 mAh capacity.