4 Maintenance and inspection
4-4 Replacing the battery
BU5002R/BU3002R/BU3002RH
102
4-4-1 Notification that the battery needs to be replaced
When it is time for the battery to be replaced, the battery replacement LED is lit and the
buzzer sounds.
The battery life is detected from the battery life counter. The battery life counter operates
while commercial power is supplied after shipment. (When the ambient temperature of the
battery is higher than 25°C, the value of the counter will be incremented at a faster pace.)
Notes
The lead battery used in the unit has a limited service life. The service life
varies depending on your storage/operating environment and backup
frequency.
⚫
The nearer the end of service life is, the more rapidly deterioration proceeds.
⚫
For details on the battery life, see the reference document “Battery life” at the end of this
manual.
⚫
The battery deteriorates even if it is stored. Note that as the temperature is increased
the life rapidly shortens.
4-4-2 Battery replacement method
BU5002R
1.
Loosen the 4 screws (
) on the front panel of the UPS, and remove the front
panel (
).
