How To Change 9v Battery In Smoke Detector. Snap the cover shut or lock the body of the smoke detector back into its base. How To Replace Smoke Detector Battery are a theme that is being searched for and liked by netizens today.

Most smoke detectors use 9V batteries. Always check the expiration date when purchasing batteries. Most detectors utilize a 9-volt batteryuse a brand new lithium 9-volt battery as a replacement.
You can know this by the and - markings on both the battery and the smoke detector.
Replace the battery from the device. Remove the old battery and replace it with a new one. So if this is the first time youve replaced yours do open the battery compartments on your units and check before heading to the store. Most detectors utilize a 9-volt batteryuse a brand new lithium 9-volt battery as a replacement.
