TDK TW345 - Battery Replacement Guide - Manual (Page 4)

Step 10
Position the replacement battery pack as shown,
aligning the battery pack plug with the recessed
connector.
Step 11
Using the needle nose pliers or the tweezers, carefully
insert the plug into the connector.
Make sure the plug is fully inserted and the polarity of
the wires is as shown.
Step 12
Twist the battery pack a few times to coil the wires
and insert the other end of the battery pack into the
compartment cavity.