Battery settings overview

Settings in this subgroup control the customization of battery actions and thresholds.

Windows will execute the Critical Battery Action when the battery is in the critical battery power state. The critical battery power state is determined when the battery percentage reaches the higher of:

1. The DefaultAlert1 Threshold, for systems which use the ACPI control method battery interface, is provided by default capacity of low
2. The battery charge level configured via provisioning or powercfg (the Critical Battery Threshold)

For example, if a device with one battery has the first value as 10% and the second value as 5%, the battery would enter the critical battery power state at 10%.

To view these two values, run pwrtest.exe /info:battery from a repro system.

In the case of a device with multiple batteries, the Critical Battery Action will execute if any of the batteries are in a critical battery power state.

Subgroup, GUID, aliases, and setting visibility

• Subgroup: Battery settings

• GUID: e73a048d-bf27-4f12-9731-8b2076e8891f

• Windows provisioning path: Common\Power\Policy\Settings\Battery

• PowerCfg alias: SUB_BATTERY

• Hidden setting: Yes

In this section

Topic	Description
Critical battery action	Specifies the action to take when the critical battery level is reached.
Critical battery threshold	Specifies a percentage of capacity that contributes to deciding when the critical battery action is taken.
Low battery action	Specifies the action to take when the low battery level is reached.
Low battery threshold	Specifies a percentage of capacity when the low battery action is taken and the low battery warning, if enabled, appears.
Low battery warning	Specifies whether the OS displays a UI warning at the battery meter when the battery capacity crosses the low battery threshold.
Reserve battery level	Specifies a percentage of capacity when the reserve battery warning is shown to the user.