Rockwell Automation T3122 ICS Regent Processor Modules - Manual (Page 10)

Processor Modules (T3110, 11, 12, 20, 21, and 22)
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Industrial Control Services
Figure 4. Replacing a Processor Module Battery.
Carefully cut the nylon wire wrap that holds the battery in
place. Disconnect the battery lead button connector from the
battery's positive terminal and remove the battery from the
module.
Connect the new battery by mounting its negative terminal to
the circuit board clip. Attach a new wire wrap through the
circuit board and around the battery. Tighten the wire wrap
until it holds the battery securely. Trim any excess off the
wire wrap.
Attach the battery lead button connector to the battery's
positive terminal. Do not use metal tools to install the battery