<human>:  How do I change the battery in my smoke detector?
<bot>: The first step is to locate the smoke detector's battery compartment. This can usually be found on the back or base of the detector. Once the battery compartment is found, use a small screwdriver to open the compartment. Carefully remove the old battery, taking note of its orientation, and replace it with a new one. Make sure to orient the new battery in the same direction as the old one. Close the battery compartment and test the smoke detector to ensure it is working properly.