14
On Battery Operation
The UPS switches to battery operation automatically if the utility power fails. While running on bat-
tery, an alarm beeps four times every 30 seconds.
Press the
button to silence this UPS alarm. If the utility power does not return, the UPS contin-
ues to supply power to the connected equipment until the battery is fully discharged.
If you are not using PowerChute, shut down the operating system and turn off the computer before
the UPS fully discharges the battery.
Determining On Battery Runtime
The UPS battery charges when connected to utility power. The battery charges to 90% capacity dur-
ing the first three hours of normal operation. (If additional batteries are connected, see
Battery Run-
time Table
for corresponding recharge times).
Do not
expect full battery run capability during the
initial charge period.
Battery Runtime Table
(gray= minutes; other= hours)
Number of Battery Packs
Internal
+1 +2 +3 +4
90 W
4.2 18.5 30.5 43.2 55.9
190.0 W
2.3 8.2
15.2
20.5
26.
5
290.0 W
1.5 4.6
9.0
13.9
18.1
380.0 W
57.0
3.0 6.9 9.5 13.6
570.0 W
36.8
2.5 3.8 6.4 8.5
760.0 W
24.8
2.1 2.8 4.2 6.2
950.0 W
17.0
1.7 2.6 3.0 4.4
1,140.0 W
13.4
1.2 2.3 2.8 3.2
1,330.0 W
11.3
57.0 2.1 2.6 2.9
1,520.0 W
8.6
51.2 1.8 2.4 2.7
1,710.0 W
7.0
45.5 1.5 2.2 2.6
1,900.0 W
6.3
39.7 1.3 2.0 2.5
2,090.0 W
5.6
33.9 1.0 1.9 2.3
2,280.0 W
4.9
29.3
57.0 1.7 2.2
2,470.0 W
4.4
27.0
53.6 1.5 2.0
2,700.0 W
4.0
25.1
48.3 1.1 1.7
2,850.0 W
3.4
22.6
46.9 1.1 1.8
Number of Battery Packs
Internal
+1 +2 +3 +4
Recharge
Hours*
3 9
15
22
28
*Recharge time is approximate time to 90% capacity from a complete discharge at a 50% load.
