On Battery Operation

The Smart-UPS switches to battery operation automatically if the utility power fails. While running on-battery, an internal alarm sounds (periodic beeps).

Press the button (front panel) to silence the UPS alarm (for the current alarm only). You can change the audible indicator if you are using the PowerChute software.

If the utility power does not return, the UPS continues to supply power to the connected equipment until exhausted. The UPS will begin to beep continuously approximately two minutes before the UPS final low battery shutdown. If using a computer, you must manually save your files and power down before the UPS turns off, unless you are using PowerChute interface software that provides auto- matic, unattended shutdown.

DETERMINING ON BATTERY RUN TIME

UPS battery life differs based on usage and environment. It is recommended that the battery/batteries are changed once every three years.

See the APC web site, www.apc.com, for on battery run times.