A user reports that their UPS is making a loud beeping sound. Which of the following would cause this problem?

UPS units are designed with charge controllers that prevent overcharging, so an overcharged state does not typically occur and would not trigger the loud alarm described.

Incorrect wattage on the power supply of the connected equipment could cause an overload alarm, but the most common and direct cause of loud beeping is battery condition, not input wattage.

When a UPS battery is discharged or has failed, the unit cannot provide adequate backup power and triggers an audible alarm to warn the user of an imminent shutdown risk. This beeping alarm is a built-in safety feature specifically designed to indicate that the battery can no longer sustain the load and must be replaced or recharged.

Power management mode (sleep/standby) on a UPS typically reduces noise and activity rather than triggering loud continuous beeping.