7 Maintenance and Inspection
7-1 Checking the battery
BW40T/BW55T/BW100T/BW120T
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7 Maintenance and Inspection
Caution (maintenance)
When maintaining the connected equipment, turn OFF the
power switch and disconnect the AC input plug.
The backup function continues to supply power from the power output
receptacles while the UPS is operating, even when the AC input plug is
disconnected.
Do not disassemble, repair, or modify the unit.
Doing so may cause an electric shock or a fire.
If fluid leaks from the unit, do not touch the fluid.
Doing so may cause blindness or burns.
If the fluid contacts your eyes or skin, wash it out with lots of clean water
and consult your doctor.
Do not throw the unit into fire.
The lead battery in the unit may explode, or leak dilute sulfuric acid.
Do not insert metal objects into the power supply output
receptacles of the UPS.
Doing so may result in electric shock.
Do not insert any metal in a battery connector.
Doing so may result in electric shock.
7-1 Checking the battery
The sealed lead battery used in the unit has a limited life.
The life varies depending on your storage/use environment and backup frequency.
The nearer the end of the life is, the more rapidly deterioration proceeds.
7-1-1 Life of battery (estimated replacement timing)
Ambient
temperature
Life of battery
25 degrees
Celsius
5 years
30 degrees
Celsius
3.5 years
40 degrees
Celsius
1.7 years
