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7.0 Difficulty
7.2 Battery replacement check
The UPS automatically performs a battery test at startup and again every
14 days. This test briefly loads the batteries and can detect a weak battery
before it is put into service during a power failure. If the battery is too
weak to support the load during this test, the UPS instantly returns to on-
line operation. The Replace Battery indicator lights when the batteries can
no longer sustain sufficient charge for the UPS to provide power for more
than half the normal time (see Sec. 9.9) during an extended utility failure.
You can expect to receive 3 to 6 years of service from the UPS’s battery
when used in a cool, dry location. Battery life is shortened when the UPS is
operated in an environment where the ambient temperature is normally
above 30°C (86°F).
If the Replace Battery indicator lights, perform the following procedure to
verify that the batteries need replacing.
1. Use the UPS’s Line Voltage bar graph to check that the utility voltage is
within a normal range (see Sec. 5.2.1). The UPS charges its battery more
slowly when operated from very low input voltages. Where low line
voltages and frequent disturbances are common, set the UPS’s Option
Switch 1 to on (down; see Sec. 5.4).
2. Allow the UPS to charge the battery for at least 8 hours after an ex-
tended utility failure.
3. Turn the UPS off and then on to initiate a battery test.
4. Check the Replace Battery indicator.
■ If the Replace Battery indicator does not light after the battery test,
the batteries do not require replacement. Extended storage without
recharge, or successive power outages can cause false indications.
■ If the Replace Battery indicator lights after the self test, the batteries
are worn and need to be replaced.
5. Call the Customer Service phone number listed on the cover of this
manual to obtain information about battery replacement service or
battery replacement kits.
Note: Please see the battery cautions at the beginning of this section.