NOTE: The Vertiv UPSes work with the native Windows 10/11 battery integration. You do not need to use the Power Assist tool.
On some computers the Vertiv Power Assist application can generate false “No AC Detected” logs in the event log. This is a software bug. If the UPS is not actually switching over to battery you can ignore this.
You can also suppress these to prevent them from creating notifications in the software by changing the Notification conditions alert setting to delay or just disable them completely.