DU Battery Saver for Android

DU Battery Saver 3.9.8.1.3 is an Android app from DU Apps that monitors battery use and offers power-saving profiles and quick optimisation. It was a popular download in the years when phones had few power-management tools of their own. Before you download DU Battery Saver for Android, read the answers below: modern Android already covers much of what it does.

What does DU Battery Saver do?

The app shows how much charge is left and how long it is likely to last, lists apps that use a lot of energy, and lets you switch between profiles that lower screen brightness, turn off Wi-Fi, Bluetooth or sync and shorten the screen timeout. A one-tap button closes background apps. Widgets and a status bar indicator put these controls on the home screen.

Do I still need a battery saver app?

Usually not. Current Android versions include battery usage statistics, a battery saver mode and adaptive limits for apps you rarely open, and phone makers add their own power settings on top. Closing background apps by force can even cost energy, because Android then has to start them again from scratch. A separate battery app mostly makes sense on older phones that lack these features.

Where can I get it?

We have no official store link or website for this app, and its availability in Google Play may vary. That makes copies on APK sites the main source, which is risky: an app that asks to manage other apps and see usage data is exactly what attackers like to imitate. If you cannot find it in your phone's official store, use the built-in tools instead.

What permissions does it want?

Battery managers typically ask for access to usage statistics, the ability to change system settings and permission to run at startup and show notifications. Grant only what you understand, and check the permissions list before installing any similar app.

How big is it and is it free?

About 6.28 MB according to catalogue data, and it is free; apps of this type are usually financed by advertising.

How can I save battery without extra apps?

• Turn on the system battery saver when the charge gets low.
• Lower screen brightness or use adaptive brightness and dark mode.
• Check the battery usage screen and restrict apps that drain power in the background.
• Switch off location, Bluetooth and hotspot when you do not need them.
• Remove widgets and live wallpapers you do not use.

Pros and cons

• Pro: simple profiles and a one-tap optimise button.
• Pro: small and free.
• Con: duplicates features that modern Android already has.
• Con: no official download source in our data.

Are there alternatives?

Our listings include AVG Cleaner – Storage Cleaner and Turbo Booster, both aimed at freeing storage and tidying up the phone. For battery life, start with the settings already on your device.