4 Checking the battery
4-1 Checking the battery
BL50T/BL75T/BL100T
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4 Maintenance and inspection
For cautions when performing maintenance, refer to “Caution (for maintenance)” shown in the
“Safety precautions” of the beginning of this manual.
4-1 Checking the battery
The life of the battery used in the UPS is limited.
The life varies depending on your storage/use environment and backup frequency.
※
As the battery life comes closer to its end, the battery deteriorates more rapidly. Be
careful.
4-1-1 Expected battery life
Ambient temperature
Battery life expectancy
25 degrees Celsius
10 years
30 degrees Celsius
8 years
40 degrees Celsius
5 years
※
The expected life is not a guaranteed value.
4-1-2 Methods for checking the battery
A self-diagnostic test performs fault diagnosis and conducts a test on battery
deterioration.
It helps check a circuit failure inside the UPS and the necessity of battery replacement.
A self-diagnostic test can be conducted either automatically or manually.
■
Automatic self-diagnostic test
When the battery is fully charged, a self-diagnostic test is automatically conducted in any
of the following cases. Your particular operation is not required.
・
When the "Power" switch is turned ON.
・
With the "Power" switch turned ON (powered on), once every 4 weeks
If the battery is not fully charged, the self-diagnostic test is not executed immediately. A
self-diagnostic test is executed automatically when the battery is fully charged.
