How do you change a battery in an XLR key fob?

To change the battery in an XLR key fob, first locate the small release tab or notch on the side or back of the fob. Use a flathead screwdriver or a similar tool to gently pry open the fob, taking care not to damage it. Once open, remove the old battery, noting its orientation, and replace it with a new one of the same type. Finally, snap the fob back together securely.