How do I replace the battery in my SIGMA BC 12.0 WR/WL cycling computer?

[McElisa]

To replace the battery in your SIGMA BC 12.0 WR/WL cycling computer, follow these steps: First, you'll need a CR 2450, 3V battery. Battery life varies; for the BC 12.0 WR, expect 3 to 4 years with 1 hour of daily use, while the BC 12.0 WL typically lasts 2 years with the same usage. Begin by removing the cover on the back of your SIGMA cycling computer to access the battery compartment. Carefully take out the old battery, being careful not to damage any internal parts. Insert the new CR 2450, 3V battery, ensuring it's oriented correctly (positive and negative sides aligned as indicated). Finally, securely close the battery compartment cover. After the replacement, check that your SIGMA BC 12.0 WR/WL cycling computer is functioning properly.