How to Turn Off Optimized Battery Charging on iPhone (iOS 15 Update)

Optimized Battery Charging is great for improving the lifespan of your iPhone battery. However, it can slow down charging, so some users opt to disable this feature.

Optimized Battery Charging is designed to improve battery life, and part of charging optimization includes reducing the time that the iPhone spends fully charged. When this function is enabled, your iPhone will delay charging past 80% in certain situations. There are various benefits to keeping iPhone optimized charging on, but you can experience a faster charge if you turn charging optimization off. If you're interested in learning more about whether fast charging is safe for your iPhone, we can help with that too!

How to Turn Off Optimized Battery Charging

To speed up charging, you can turn off charging optimization.

  1. Open the Settings app.
  2. Scroll down and tap on Battery.

    Open the Settings appScroll down and select Battery
  3. Select Battery Health.
  4. Tap on the Optimized Battery Charging toggle to turn it off. Green means optimized charging is on, gray means it's turned off.

    Select Battery HealthToggle off Optimized Battery Charging
  5. Select Turn Off Until Tomorrow or Turn Off, whichever you prefer. Turn Off will keep charging optimization off until you turn it back on again.
  6. Once you make a selection, your changes will save automatically.

    Select how long you'd like to turn off the Optimized Charging setting for

If you decide to turn Optimized Battery Charging on again, you can enable it again as necessary by going into your Battery Health settings using these same steps.

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Author Details

Olena Kagui's picture

Author Details

Olena Kagui

Olena Kagui is a Feature Writer at iPhone Life who lives in Hawaii. With a BA in International Relations from Anglo American University, Olena traveled the world. She has lived in Ukraine, the Czech Republic, China, and the USA. Olena won an excellence award for a controversial article, got a grant to blog from a war-zone, and published a short fictional story. She hopes to publish a full-length novel and continue writing up a storm on her blog The Travel Bug Bite! When she’s not typing or flying, she is loving on animals, crafting bizarre creations, and devouring all-you-can-eat sushi.