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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.
Although the following run times are “typical,” these numbers are subjec t to change. For the most
recent and accurate sizing information, please consult the Size-UPS section of APC’s website at
www.apc.com/siz ing.
LOAD (VA) LOAD (WATTS) RUN TIME (MINUTES)
750 600 40m
1125 900 25m
1500 1200 16m
2200 1750 11m
2500* 2000* 9m
3000* 2400* 7m
*Runtimes at these load levels are applicable to the SU3000RMXL3U only.
For non-power factor corrected loads, the power in watts may be limited by the maxi-
mum VA rating.