Viewing information about battery life

You can view information about battery life:

For Android 4.1-6.x, detailed statistics on the activity of running apps are also available.

Battery life information includes:

Battery life remaining without charging (as a percentage and in minutes): with current power consumption, in sleep mode and in active mode.
The total amount of time you can get by stopping running apps (the Stop <number of> apps button).
Due to certain aspects of Android 7,8 and 9, this estimate is not displayed on devices running these operating systems.
Estimates of how much longer your device will work if you stop a certain app. See the estimate next to each app on the list.
Due to certain aspects of Android 7,8 and 9, this estimate is not displayed on devices running these operating systems.
Percentage of battery power consumed by certain apps.
Due to certain aspects of specific operating systems, this estimate is displayed only on devices running Android 7, 8 and 9.
Time needed to fully charge the battery (when the device is charging).
Percentage of battery charged (when the device is charging).

The detailed statistics on app activity include: