Replacing the Battery on Your Smoke & CO Listener


If you need to know the status of the battery on your Ring Alarm Smoke & CO Listener, the device details page in your Ring app contains the current state, controls, history, and the battery level. 

Battery Level: The battery status will be shown in the top right.

    • Green = full (100–76%)
    • Green = ok (75–26%)
    • Yellow = low (11–25%)
    • Red = warn (1–10%)
    • Red, line through it = failed (0%)

To replace the battery on the device, follow the procedure listed below


How long do the batteries last?

The CR123A battery should last up to three years.

Replacing the battery

  • Twist the lid on your listener counterclockwise and lift to remove.
  • Replace the battery with a fresh CR123a cell. 
    • The listener should then reconnect to your Alarm Base Station automatically.
  • Place the lid back on the listener, taking care to line up the semi-circle on the rim of the id with the open semi-circle on the base. 
  • Twist the lid clockwise to lock it in. 

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