Motorola MC17 Product Reference Manual page 27

Proper Placement of Rubber Pad
Figure 1-9
Place the battery, rounded side down, in the compartment ensuring that the black rubber pad stays in position.
12.
Place battery in Compartment
Figure 1-10
Press the wires around the screw boss so that they do not interfere when installing the battery cover.
13.
Rubber Pad Fingers
Straddle Screw Boss Ribs
Rubber Pad Flat
Against Sidewall
Getting Started 1 - 9