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Extend Your iPhone’s Battery Life by Staying in Low Power Mode

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When your iPhone battery is down to its last 20% or so, which you’ve probably been counting on Low power mode to save the day. This is a quick and easy fix where iOS limits or disables features to help your battery last as long as possible until you reach Charger.

Apple introduced the feature with iOS 9 as a way to keep using your iPhone as long as possible. You might be wondering what exactly low power mode does, and if it saves battery life, why not keep it on all the time?

Read more: Does the iPhone have a battery aging problem?

Learn exactly what disables Low Power Mode, how to turn it on and off, and how to keep it on all the time if you want to see how it affects your iPhone’s battery. For more, read about how to charge your iPhone the right way.

What is iPhone Low Power Mode?

Low Power Mode is an iOS setting that disables some iPhone features to save battery power when it’s low. Your iPhone will ask if you want to turn on Low Power Mode when the battery drops to 20% and then back to 10%.

A screenshot of the battery level graph in iPhone Settings A screenshot of the battery level graph in iPhone Settings

When your iPhone is in low power mode, it will be tracked in yellow.

Screenshot by Peter Butler/CNET

Apple says Low Power Mode reduces the amount of power your iPhone uses to make your battery last longer.

You can tell when you’re in low power mode because your battery icon will glow yellow. Your iPhone automatically turns off Low Power Mode when the battery reaches 80%.

What Features Does Low Power Mode Disable on iPhone?

According to official apple support page, Low Power Mode makes these changes to conserve your battery:

  • Excludes 5G (except streaming video)
  • Sets your iPhone screen to turn off after 30 seconds of inactivity
  • Decreases the brightness of the display
  • Reduces display refresh rate for iPhone with ProMotion
  • Eliminates some visual effects
  • Pauses iCloud Photos syncing
  • Stops automatic downloading
  • Pauses email retrieval
  • Stops background apps from refreshing

Low power mode also disables watching HDR videos, turns off the always-on display iPhone 14 Pro and iPhone 15 Pro models, disables video auto-play and reduces CPU and GPU performance.

How to turn on iPhone Low Power Mode?

You can turn it on manually by going to Settings > Battery and switching Low power mode. You can also turn on low power mode manually with iPhone Control Center or with Siri.

How to turn on low power mode on iPhone permanently?

The manual way to keep low power mode on all the time is to simply put your iPhone into low power mode every time you charge it. But there’s an easier, automated way to “set it and forget it.” To keep your iPhone automatically in low power mode at all times, you’ll need to get a little crafty and make your own Personal automation using Shortcuts app.

There are many ways to automatically set low power mode using the Shortcuts, but for me the easiest method is to turn on low power mode when the battery is below 100%. This way, your iPhone is essentially in low power mode all the time, but it can also create backups, perform downloads, and receive updates when it’s on and charged at 100%.

Scroll right on your iPhone’s home screen to get to your Application librarythen scroll down and tap Shortcuts. After the app starts, select Automation at the bottom of the screen, then tap the blue Create personal automation button.

3 iPhone screenshots showing how to make personal automation in Shortcuts 3 iPhone screenshots showing how to make personal automation in Shortcuts

Creating a personal automation in Shortcuts takes just a few steps.

Screenshot by Peter Butler/CNET

On New animation screen, scroll down and select Battery level. Tap the bottom option, It falls from belowand then move the slider all the way to the right for 100% Then click The next one. You have set your condition to trigger an action.

Now create the action to set your iPhone in low power mode. On Actions screen, click the blue Add action button. Then you can type “Low” in the search box and tap Set low power modeor touch Scripting and find it under device.

3 iPhone screenshots showing how to add the Set Low Power Mode action 3 iPhone screenshots showing how to add the Set Low Power Mode action

After adding the low power mode action, you can set it to work without asking.

Screenshot by Peter Butler/CNET

Once you have chosen Set low power modewill appear on your Actions screen like “Turn on low power mode”. Click The next one. On the next new automation screen, toggle Ask before you run off so that the lower power mode can be turned on automatically. If you want, you can request a notification to come through every time the automation runs.

Confirm “Don’t ask,” then tap Done to finish. You are ready. Whenever your battery drops below 100%, your iPhone will automatically switch to low power mode.

How much battery power does low power mode save?

You won’t get a definitive answer here. The value of low power mode has been debated since it was introduced. Although according to some estimates the battery charge will last about one and a half times as long using low power mode, others show very little difference when using the battery.

If you’re concerned about how to make your iPhone battery last longer, you’ll just have to try low power mode for yourself and see the difference.

How to turn low power mode off again

2 iPhone screenshots showing how to turn off automatic low power mode 2 iPhone screenshots showing how to turn off automatic low power mode

Turn off automatic low power mode by disabling automation or deleting it.

If you find that low power mode isn’t saving your battery, you can turn off the automation by logging in Shortcuts and shutdown Enable this animation. To delete it completely, swipe left on your automation in low power mode on the main automation screen, then tap the red Delete button.

You can also create your own custom version of Low Power Mode by changing your iPhone’s settings to take some of the measures that Low Power Mode does. For example, you can significantly save battery by stop background apps from refreshing or adjusting your brightness settings.

Check if your battery is still healthy

Screenshot of Battery Health iPhone with degraded battery Screenshot of Battery Health iPhone with degraded battery

Maximum Capacity compares your current battery performance to its performance when it was new.

An apple

Although turning on low power mode permanently is an experiment you might want to try if you find that must to keep low power mode on all the time to get decent iPhone battery performance, it’s very possible that your battery is degraded or you have other problems.

To check the health of your iPhone’s battery, go to the Settings > Battery > Battery health and charging. You will see the maximum capacity of your battery, as well as options to set optimized battery charging and clean energy charging. If your iPhone’s maximum battery capacity has dropped to 80% or less, you’ll see an “Important Battery Message” warning. This means that your battery has deteriorated significantly and must be replaced or repaired by an Apple Authorized Service Provider.



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