Dell W32C Owner's Manual page 64

Steps
1. Push the release lever on the coin-cell battery socket to release the coin-cell battery out of the socket.
2. Lift the coin-cell battery from the coin-cell battery socket.
Installing the coin-cell battery
Prerequisites
If you are replacing a component, remove the existing component before performing the installation process.
About this task
The following image(s) indicate the location of the coin-cell battery and provides a visual representation of the installation
procedure.
64 Removal and installation procedures for High Performance processors