How do you change the battery on a bd SpongeBob thermometer?

To change the battery on a BD SpongeBob thermometer, first, locate the battery compartment, usually found on the back of the device. Use a small screwdriver to remove the screw and open the compartment. Replace the old battery with a new one, ensuring the correct polarity (+/-) is observed, then close the compartment and secure it with the screw. Always dispose of the old battery properly.