I do not know about you, but nothing is more annoying than when my phone reaches 15% and I'm not near a charger. Not only because I know my phone is about to die, but until I get a charger, I have to deal with the annoying battery warning and the LED light. Well, with Android P we can finally escape that.
Android 9.0 extends Google Notification Channels, first introduced in Android 8.0 Oreo. Not only are they pushing all new apps and updates to Oreo, they are also forcing the launch of more apps, but they are expanding the notification channels to work with preinstalled apps, such as the System UI, which manages, among other things, low-battery notification. In short, you can finally change the low battery indicator, or even turn it off completely.
: Turn Off the Battery Alert
There are two ways to deal with the annoying "Battery is Weak." Notifications in Android 9.0: You can either make them less intrusive or disable them directly. I'll cover both methods, starting with shutdown instructions.
Open the main Settings menu and select "Apps & Notifications." Select "Show all X-Apps" (X is the number of apps installed on your phone) and select the three vertical dots in the upper right corner. Select "Show System" to display the system apps in the list.
After selecting "System UI" from the list, select and select it to open your app info page. Choose Notifications to see a list of all the categories of notifications created by the System UI app.
Check the box next to "Battery" and just tap it to Disable notifications. Select the back arrow in the upper left corner to save your selection. If you did this correctly, you will see a "1 Category Cleared" message at the bottom of this menu indicating that you have turned off battery warnings.
If the battery notifications are disabled, you will no longer have to worry about the irritating warning if you press 15%. Note, however, that disabling this alert can be bittersweet. While you will not feel disturbed by the warning, in addition to actively checking your battery level, you will not know when your phone's battery is nearly used up.
Android P gives you more than just the power to turn it off. You can also change the warning to your liking. On the System UI App Info page, select the text "Battery" instead of the checkbox. Choose Behavior to see more options for customizing notifications.
To disable only the sound, but still make the warning appear on the screen, select "Show Silent". However, if you do not want the audio or alarm to appear on the screen, select "Silently show and minimize". This option displays the warning message in your notification window with a warning.