I have an APC Smart-UPS C 2000 plugged into Unraid using the NUT plugin. About once or twice a day I get a seemingly incorrect notification "UPS On Battery" followed immediately by a "UPS Online". I don't notice the lights blinking when this happened, so I can only assume this is an issue with my UPS. I had the same issue with this UPS connected to my Synology before switching over to Unraid.
Is there a way to add a custom setting to ignore "on battery" for x seconds before sending out a notification?