How to Replace Ring Smoke and CO Listener Batteries

Become a Ring Smoke & CO Listener¹ battery expert and learn how to find its current state, controls, history, and battery power level 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.¹

1. Disarm your Ring Alarm.²
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 Listener¹ by pressing the test button on your smoke or CO2 detector. If working, you’ll receive a notification from your Ring app.