Part 1. Replacing the Battery for Non-wired Detectors. Check the battery type. Remove the smoke detector. Open the battery compartment and install the new battery. Test the batteries. Double check if the test fails. Review your smoke detector's instruction manual.
You can watch a simplified version of this process below. Once reset, the smoke detector should chirp one more time. If it keeps beeping, change the batteries.
You can replace the battery in a smoke alarm yourself. The smoke alarm will beep automatically when the battery is low. When this happens, you need to .