I've done some searching and found one thread with this same problem, but didn't have a solution.
I just moved an APC BackUPS BGM-1500 to my unraid server.
When i set up NUT, it always says "On Line - Discharging Battery"
But it's not discharging. It is running off of AC fine and hasn't switched to battery at all. I set up a windows VM and passed the USB port to it to test the unit with PowerChute, and it tested fine and wasn't running on the battery.
Is there anything I can do to get it to report correctly?