iPhone 15: How to set the charging limit and solve the problem of invalid settings?

Apple has introduced a new battery health feature in the iPhone 15 and iPhone 15 Pro series models, with built-in related settings options that allow the daily charging limit to be set to 80%.

According to the instructions in Apple’s official support document, iOS 13 and Later versions of iPhone support "optimized battery charging" and will learn the user's daily charging habits. In some cases, the iPhone will suspend charging to more than 80%.

In the new iPhone 15 series models, selecting "80% cap" limits charging to 80% in all cases. This new feature allows users to limit the maximum charge level of the battery to better protect its lifespan.

Users who need to turn on this feature can make the following settings:

Open iPhone Settings-Battery-Battery Health And charge-charge optimization, then set to "80% cap".

If you find that after turning on this setting, the iPhone still charges to full charge, you can Waiting for Apple to officially release the official version of iOS 17.1 to fix it. In the previously released iOS 17.1Beta 2 update, Apple has solved this problem.

In addition, the iPhone 15 series models can also see the production date and first use time of the mobile phone battery in the "Settings" - "General" - "About This Mac" interface and the number of cycles.

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