First, you’ll need to unmount the alarm and find the battery compartment. If your alarm is hardwired, turn off power. Remove the alarm from the ceiling or wall. Locate the alarm’s model number on the back of the unit. Check the chart in this article or your user manual to find the right replacement batteries, typically 9V or AA.
Use the plastic tab to gently open the battery compartment. Remove the old battery. Look at your 9V battery to identify the positive (+) and negative (-) contacts similar to what is shown in the image. When installing the battery in …
How to replace battery in First Alert Smoke Detector
How to stop a chirping smoke detector. Remove, install and replace a new battery (9 volt battery) in a First Alert plug in smoke detector and carbon monoxide…
Change Smoke Alarm Battery. First Alert 9120B
People Also Ask how to replace battery for first alert fire extinguisher 9120
How to replace the battery in a fire alarm?
How to Replace a Battery 1 If your alarm is hardwired, turn off power. 2 Remove the alarm from the ceiling or wall. 3 Locate the alarm’s model number on the back of the unit. 4 Check the chart in this article or your user manual to find the right replacement batteries, typically 9V or AA.
Can I use a rechargeable battery in my First Alert alarm?
Rechargeable batteries are not recommended. Refer to the list to find the right batteries for common First Alert alarms. Location: Front face of alarm in the bottom left corner. Location: Flip the front cover open and replace the 9V battery. If your model isn’t listed, check your manual for more information on appropriate replacement batteries.
Why is my First Alert 9120b not working?
First Alert 9120B If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.
What kind of batteries do First Alert smoke detectors take?
Most detectors take AA or 9V batteries. Use brand-name Duracell, Energizer, or Eveready batteries with an expiration date 4+ years from today’s date. Rechargeable batteries are not recommended. Refer to the list to find the right batteries for common First Alert alarms.
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Change Smoke Alarm Battery. First Alert 9120B Video Answer
Reference:
https://www.usfa.fema.gov/
https://en.wikipedia.org/wiki/Fire_extinguisher