BY
35
S / BY
50
S / BY
80
S / BY
120
S
6
31
Perform replacement on a stable and fl at place.
●
Handle the battery carefully so that you do not drop it.
●
Not doing so, could cause blindness or burns by the leaked fl uid (dilute sulfuric acid).
Use a specifi ed battery for replacement.
●
Not doing so may cause a fi re.
●
Product model:
BYB50S for BY35S/BY50S
BYB80S for BY80S
BYB120S for BY120S
Do not replace the battery in a place where there is fl ammable gas.
●
Spark may occur when connecting the battery, which may cause an explosion or fi re.
If fl uid (dilute sulfuric acid) leaks from the battery, do not touch the fl uid.
●
Doing so may cause blindness or burns.
●
If it contacts your eyes or skin, wash it out with lots of clean water and consult your doctor.
Do not disassemble or modify the battery.
●
Doing so could cause dilute sulfuric acid leak, which could cause blindness and burns.
Do not drop the battery and do not expose it to strong impact.
●
Dilute sulfuric acid may leak.
Do not short the battery with metal objects.
●
Doing so could cause an electric shock, fi re or burn.
●
Some electrical energy still remains inside the spent battery.
Do not put the battery into fi re and do not break it.
●
The battery may explode or leak dilute sulfuric acid.
Do not use a new battery and an old battery at the same time.
●
Dilute sulfuric acid may leak.
The battery can be replaced while the unit is stopped (power supply output stopped).
* When replacing the battery, stop the connected devices, turn OFF the power switch of the UPS,
and disconnect the AC input plug from the wall.
* If an input power supply error such as a power failure occurs when replacing the battery while in
operation, backup cannot be performed and output stops.
* Do not replace the battery during backup operation. Output will stop.
3. Guidelines for how often to check the battery (measure the backup time)
* The battery deteriorates even if it is stored. The higher the temperature is, the shorter
the life becomes.
Caution
(for battery replacement)
6-2
Replacing the battery
Ambient temperature
Check once every 6 months
Check once a month
20°C
For the fi rst 3 years after purchase
When 3 or more years have passed since purchase
30°C
For the fi rst 1.5 years after purchase
When 1.5 or more years have passed since purchase
Caution
When the unit is used in compliance with UL standards, do not replace the battery while in opera-
tion (while power is being output). Replacing the battery while in operation does not comply with UL
standards. Make sure to stop the operation of the unit before replacing the battery.
