How do you change the battery in a 2001 BMW Z3 Roadster?

To change the battery in a 2001 BMW Z3 Roadster, first, ensure the vehicle is off and parked on a flat surface. Open the trunk and remove the cover panel to access the battery compartment. Disconnect the negative (-) terminal first, followed by the positive (+) terminal, and then remove the old battery. Install the new battery by connecting the positive terminal first, followed by the negative, and replace the cover panel.