Peak Performance Capability on iPhone

If your iPhone has a low battery that leads to control problems, then you have Peak Performance Capability issues on your iPhone as the Battery Health section will tell you this and may even provide an option to turn off performance management to end any bottlenecks that happen.

I don’t know about you but I patiently waited for iOS 11.3, earnestly expecting that it will come with the option to disable battery bottlenecks. The move to automatically choke old devices off to keep the battery healthy with a large block of iPhone users, prompting Apple to deduct the battery replacement and add the new feature to iOS 11.3.

But it is quite unfortunate that it did not offer users the option to disable CPU throttling which has caused a lot of controversies, but it also adds a lot of battery safety information. Apple added features to display battery health and notify the device owner if the battery needs maintenance. This information can be found in the Settings app on the Battery tab.

You can attest to the fact that on previous iPhone models, and even the iPhone XS range, the Peak Performance Capability subtitle will let you know if the battery is still in its prime.

The text was as follows: “The battery currently supports normal peak performance.” It will, of course, change depending on the condition of the battery and whether or not the iPhone has stopped working unexpectedly.

If you purchased iPhone 11, iPhone 11 Pro, or iPhone 11 Pro Max, you will find that the message has changed slightly. Apple has indicated that the maximum battery capacity measures your iPhone’s battery capacity when it is new. The batteries will start at 100 percent when first activated and will have lower capacity as the battery life progresses.

According to Apple, the regular battery is designed to hold up to 80 percent of its original capacity in 500 full charge cycles when operating under normal conditions.

Peak Performance Capability on iPhone – Everything you need to know
Peak Performance Capability on iPhone – Everything you need to know

Peak Performance Capability on iPhones

Now, as far as peak performance capabilities are concerned, the ability of the iPhone battery to provide adequate charging. If the maximum capacity of the iPhone battery is less than 80 percent, its health has significantly deteriorated and needs to be replaced.

If the iPhone turns off unexpectedly because it cannot maintain maximum performance, then the device enters into this case with performance management enabled. Performance management dynamically slows down the CPU to reduce peak battery power requirements.

If you don’t want to be throttled, users can get a physical battery replacement or disable the throttle, which is a new option in iOS 11.3.

To disable, select the blue disable link. You may have to stare, the text is too small. The iPhone screen will then look like the following screenshot, indicating that performance management has been disabled.

If you disable performance management, it cannot be re-enabled. The device will be disabled until the next time the device is turned off because the battery cannot provide sufficient peak power.

The iPhone will automatically start performance management when an unexpected shutdown occurs. This means that this is not a feature of shooting and forgetting. If you never want to choke, you will have to return to the Battery Health screen repeatedly and disable it every time it turns on again automatically.

You can check the battery status in the new battery health section, which will tell you the maximum capacity of the battery in your iPhone and whether or not it is running at maximum performance capacity. Here’s how to get there:

  • Open the Settings app.
  • Scroll down to “Battery” and press it.
  • Click on “Battery Health”.

Virtually every single thing you need to know about the battery is listed here. The maximum capacity will let you know how your battery is performing overall, directly related to how long your iPhone will last in one charge.

Maximum performance capacity allows you to see if the degraded battery has slowed performance.

When the iPhone is running as normal, under the “Peak Performance Capability” section, “Battery currently supports normal peak performance” will appear.

Perhaps you still have very low battery capacity as this number slowly decreased after charging cycles, but the bottleneck does not start until the battery is severely degraded and cannot provide enough power to support the increases in processor usage.

Your iPhone will automatically trigger performance management anytime it has at least one battery shutdown which is Apple’s performance bottleneck, given that the battery is “unable to deliver the necessary peak power”. In this case, you’ll see a “Disabled” blue link in the text below Maximum Performance.


To disable performance control, just click the “Disable” link. After doing this, it will indicate that “I manually disabled performance management protections.” Unfortunately, there is no way to manually reverse this procedure. If you disable it, you will not be able to enable the feature unless your iPhone experiences another battery shutdown. However, this also means your decision to disable the power throttle is only good for the iPhone to automatically enable it again.

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