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Posted: 2024-01-1711:33 AM
I've attached the user manual and on page six which alarm state reflects your condition? Insure you also look at the front of the UPS LCD. APC offers a three year warranty so dig out your receipt as to exactly when you purchased the unit.
Could very well just be a bad battery that needs replacement - easy fix. But, you'll want to confirm with the manual which I appended here because it could be the UPS.