Lucent Technologies Round Cell Batteries
Issue 3 December 1999 Operation and Maintenance 7 - 13
Check Battery Connections
Interval Perform this procedure at 5-year intervals.
Guidelines • Only re-torque connection if the intercell connection resistance is
greater than the values listed below. The intercell connection
resistance should be no greater than 5 microohms of the following
values:
– two 12" x 1" x 1/8" connectors 48 microohms
– four 12" x 1" x 1/8" connectors 31 microohms
– two 12" x 2-1/2" x 3/8" connectors 19 microohms
• Refer to original readings for inter-tier and inter-row cabling.
• Tolerance is ±5 microohms
• In the event the connection resistance is greater than the above data,
refer to “Intercell Connectors” in the Installation section and the
following information.
Safety • Do not loosen or remove a battery connection while cells are gassing,
charging, or discharging. Disconnect string from the load and
charger.
• Connect to the battery terminals first before connecting to the load or
charging system.
• Only perform this operation after the battery has been on float for at
least 48 hours.
• Battery connections should be tight and corrosion-free.
• Be sure that all intercell connections are tight except for the
connection that is being opened for cleaning or other purposes.
DANGER
Avoid creating sparks, including those from static electricity, or the use
of an open flame near batteries since the gas is explosive when
sufficiently concentrated. Before performing each individual work
operation, firmly touch a grounded rack to discharge the static
electricity from your body.
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