Battery saver is an option in Android designed to minimize power usage when enabled. It will typically only come on if the device is not plugged in or is less than the amount of battery % specified in the battery saver settings on your device (default is 20%).

This trigger will fire when the battery saver is enabled/disabled depending on the configuration option chosen.

Example Usage
When the battery saver is enabled, lower the brightness and disable Bluetooth and Mobile data.

Triggers

Battery saver state (Enabled)
Actions

Brightness 15%
Disable bluetooth
Disable mobile data