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How to Replace Ring Smoke and CO Listener Batteries

Become a Ring Smoke & CO Listener² battery expert and learn how to find its current state, controls, history, and battery power level¹ from the Ring app.

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. The CR123A battery should last up to three years.

How to replace a Smoke & CO Listener battery

*Always insert replacement batteries correctly, matching the + (positive) and - (negative) symbols on the battery with the symbols on your Smoke and CO Listener.²

  1. Disarm your Ring Alarm.¹
  2. Carefully remove the cover from the device by turning the lid counter-clockwise. Lift to remove.
  3. Remove the old battery from the base and insert a new CR123A battery,
    taking care to match + and - symbols with the markings on your sensor. Confirm that the + and - symbols show on top when inserted.
  4. Place the lid back on the device, making sure to line up the semi-circle on the lid with the “open” semi-circle on the base. Lock the lid back on by turning it clockwise.
  5. Check your Smoke & CO Listener² by pressing the test button on your smoke or CO2 detector. If working, you’ll receive a notification¹ from your Ring app.

¹ Ring Alarm and all Ring Alarm accessories require a subscription for digital notifications, in-app features, digital arming/disarming, and integration with other Ring, Echo, and third party products. Subscription sold separately. View ring.com/protect-plans for pricing and details.
² A compatible Ring Protect subscription is required to enroll in the Ring Alarm professional monitoring service. Professional monitoring service is available only within the U.S. (all 50 states, but not U.S. territories) and in Canada (excluding Quebec). Ring does not own its own professional monitoring center. Smoke and carbon monoxide monitoring is not available for commercial properties. See Ring Alarm licenses at: https://www.ring.com/licenses.
³ Requires the Ring Alarm Security Kit.
⁴ This device does not detect fire, smoke or carbon monoxide. For best performance, use with detectors that are 10 years old or less and comply with all applicable standards
⁵ Improper installation may interfere with the performance of this device and or the Smoke/CO detector. Refer to the user manual for this device and the detector. Only use the Listener in a manner that is consistent with the detector manufacturer’s recommendations. Failure to do so may negatively affect the detector’s functionality, including delayed detection or failure to detect smoke or CO.
Last updated 4 months ago