Justin Duino / How-To Geek
Battery usage per app can be found by going to Settings > Battery > Battery Usage, or Settings > Battery and Device Care > Battery on a Samsung Galaxy device.

If your Android phone’s battery always feels a little low, you can find out exactly where that power is going. Android’s Battery screen shows you what’s used battery power since your last charge, from apps to system services.

How to Check Battery Usage on Android

You can find the battery usage on Android devices by going to Settings > Battery > Battery Usage, or Settings > Battery and Device Care > Battery on a Samsung Galaxy device.

First, swipe down once or twice from the very top of the screen and tap the gear icon.

Next, go to Battery > Battery Usage.

Select "Battery" then "Battery Usage."

Now you’ll see a list of apps and the percentage of the battery they’ve used since the last full charge.

Battery usage in apps.

Keep scrolling to the bottom to see system app usage—such as Google Play Services.

System app battery usage.

With a Samsung Galaxy device, you can see the same list by going to Settings > Battery and Device Care > Battery.

Samsung battery settings.

The three biggest battery hogs will be shown first, but you can tap “View Details” to see the full list.

Tap "View Details."

That’s all there is to it! Some popular apps have “Lite” versions you can try if you find the full version is eating up too much battery.

How to Stop Apps From Draining Battery on Android

Android apps can be “optimized” in three different modes for battery usage—Unrestricted, Optimized, and Restricted—and you can change the mode from the app’s information page in the Settings app.

To get started, go to the Settings and open the “Apps” section. Select an app from the list.

Go to "Apps" and choose an app.

Next, select “Battery” or “App Battery Usage.”

Select "App Battery Usage."

Now you have a choice between three optimization modes:

  • Unrestricted: Allow battery usage in background without restrictions. May use more battery.
  • Optimized: Optimize based on your usage. Recommended for most apps.
  • Restricted: Restrict battery usage while in background. App may not work as expected. Notifications may be delayed.

Android battery modes.

If an app has been using too much battery, you can try the “Optimized” or “Restricted” modes. One thing to note is restricting app’s battery usage can have annoying consequences. You may want to keep frequently used apps as “Unrestricted.”

How to Use Android Battery Saver Mode

Android’s “Battery Saver” or “Power Saving” feature can be enabled by going to Settings > Battery > Battery Saver, or Settings > Battery and Device Care > Battery > Power Saving on a Samsung Galaxy device.

First, go to the Settings app and navigate to Battery > Battery Saver.

Go to "Battery" then "Battery Saver."

On a Samsung Galaxy device, open Settings and go to Battery and Device Care > Battery.

Samsung battery settings.

Toggle the switch on to turn on the battery saving mode right away.

Turn on battery saver and power saving.

On some devices, you can select the schedule option to decide when Battery Saver should automatically turn on.

Tap "Set a Schedule."

Many devices also have some sort of “Extreme” battery saver mode, which basically shuts down everything the device except for a few essential apps and services.

Extreme battery saver.

Samsung Galaxy devices have an “Adaptive Power Saving” feature that attempts to intelligently turn Power Saving on and off based on your usage patterns. It can be found at Settings > Battery and Device Care > Battery. Tap the three-dot menu icon and select “Adaptive Power Saving.”

Samsung adaptive power saving.

Samsung also has additional settings for how Power Saving should work. For an “extreme” power saving mode, toggle on “Limit Apps and Home Screen.”

Samsung's extreme battery saver.

These battery saver modes come in handy when you need to squeak out every last drop of your battery. They’re really not intended to be enabled all the time.

How to Close Apps on Android

Swipe up on an app from the multitasking screen to lightly close it, or go to Settings > Apps . Select an App > Tap “Close.” You can use these methods to close an app if it seems to be using too much battery. Sometimes, a simple restart will fix the app.

For the first method, swipe up from the bottom of the screen and pause halfway to see the recent apps.

Swipe up from the bottom of the screen.

Scroll through the list of recent apps and swipe up on any app to “close” it.

Swipe up to close app.

To use the more aggressive “Force Close” method, go to the Settings app and open the “Apps” section.

Go to the "Apps" section.

Select the app you’d like to close or tap “See All Apps” to view the full app list.

Select an app.

Now select “Force Stop” or “Force Close.”

Tap "Force Stop."

Tap “OK” on the pop-up to confirm.

Tap "OK" to confirm.

The app and its background services will be killed. If this doesn’t solve the battery draining issue, you can try rebooting the phone.

If a reboot doesn’t work, you may need to check your Android phone’s battery health. It may be time to replace the battery or get a new phone.

Similar features are available on Microsoft’s Windows 10, Apple’s iPhones and iPads, and Mac OS X. You can see exactly what’s been using battery power and make informed decisions to help prolong your battery life.

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Profile Photo for Joe Fedewa Joe Fedewa
Joe Fedewa is a Staff Writer at How-To Geek. He has been covering consumer technology for over a decade and previously worked as Managing Editor at XDA-Developers. Joe loves all things technology and is also an avid DIYer at heart. He has written thousands of articles, hundreds of tutorials, and dozens of reviews.
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Profile Photo for Cameron Summerson Cameron Summerson
Cameron Summerson is ex-Editor-in-Chief of Review Geek and served as an Editorial Advisor for How-To Geek and LifeSavvy. He covered technology for a decade and wrote over 4,000 articles and hundreds of product reviews in that time. He’s been published in print magazines and quoted as a smartphone expert in the New York Times.
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