Lucent Technologies Round Cell Batteries
Issue 3 December 1999 Operation and Maintenance 7 - 21
Replace a Cell in an Existing String, continued
String Connected
to Load/Charger
• Only qualified, trained personnel that have read and understand the
hazards described in the Safety section of this manual should
perform this work. Appropriate protective equipment must be used.
• Follow the appropriate procedures in the installation section for
unpacking and performing the initial charge on the cell(s).
• In addition to other important safety precautions, ensure the
following:
– The vent funnel has been properly installed before making any
electrical connections to the new battery.
– The string and new cell has been at float (less than 2.20 volts/
cell) for at least 48 hours.
– The time the new cell is left on open circuit after charging and
before connecting into the new string does not exceed 24 hours.
• One cell at a time may be replaced in an existing string without
removing the battery string from the plant bus.
Warning
This process increases the risk of creating sparks at the battery
terminals and should be avoided unless absolutely necessary. It is
extremely important that this process only be performed by
qualified, trained personnel who have read and understand the
hazards described in the safety section of this product manual and
who are using the proper protective equipment.
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