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We have a laptop that online for 24/7

in-case of power failure need to run a batch file or program

like below How to run a Windows application when the ethernet cable is connected?

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  • I don't have a laptop at the moment but I think a Windows event is generated when it switches to battery, and you can use the "Attach a task to this event" function in the Event Viewer. Not sure which event, try experimenting.
    – LawrenceC
    Commented Aug 9, 2017 at 13:28
  • I'd try powercfg /batteryreport or Get-WMIObject -Class Win32_Battery can't test myself.
    – LotPings
    Commented Aug 9, 2017 at 13:32
  • On StackOverflow, the answer would have been RegisterPowerSettingNotification but that's assuming you have a program waiting in the background.
    – MSalters
    Commented Aug 9, 2017 at 13:54

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This can be done via WMI

To do this, you create a WMI event customer with New-WmiEventConsumer, of -ConsumerType CommandLine so you can pass a -CommandLineTemplate.

The event itself would be a WMI filter, created with New-WmiEventFilter and -Query "select * from Win32_PowerManagementEvent where EventType = 4" (4 = suspend).

Then tie customer and event with New-WmiFilterToConsumerBinding.

Note that the problem with suspend on power failure is that you may not have much warning.

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