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Are there any alarms that do not work with the Roost smart battery?

We do not recommend using Roost batteries in Kidde i12060, FireX Kidde i4618, First Alert CO400, BRK SC6120B or FireAngel SB1 alarms.

While the Roost Smart Battery works in most smoke and combined smoke/CO alarms that use a common 9V battery (this includes both 9V battery-powered alarms as well as AC-powered (hardwired) alarms with 9V battery backup), we have discovered compatibility issues with our batteries and the following alarms (see table below). If you are located in the United States and your alarms are not certified to UL or ETL standards we cannot warrant the Roost Smart Battery in your alarm. If your alarm is on this list, you may want to consider replacing it, especially if it is older than 10 years old. Please see our Help Center Article: When should I replace my smoke alarm?

You can tell if you have a Version 2 battery because the Roost logo on the bottom of the battery is white.

United States

Manufacturer: First Alert

Model Issue Resolution
7020B Alarm chirps low-battery due to how it checks backup battery voltage (original Roost battery) Replace alarm
SA720 and SA720CN Alarm has an "Escape Light" and bright LED that will significantly shorten the battery life of the Roost Smart Battery Replace alarm
P900 Alarm occasionally chirps for unknown reason (original Roost battery) Replace alarm

UP-5AD-12-A Explosive Gas and Carbon Monoxide Alarm

Alarm chirps low battery Not warranted for use in this alarm

Manufacturer: Kidde

KN-COSM-1B Alarm chirps low-battery due to how it checks backup battery voltage  Replace alarm. Recall announced 11/10/16
KN-COPE-1C Roost battery is difficult to install because of clip on Kidde alarm battery door Replace alarm (preferred) or contact Roost Support for extra installation instructions
Firex i4618 Alarm chirps low-battery due to how it checks backup battery voltage  Replace alarm

Manufacturer: Mudder

Model Issue Resolution
PW-525SC Alarm will deplete Roost battery in less than 1 year. Battery not warranted in this alarm. Replace alarm



Manufacturer: Kidde

Model Issue Resolution
0976CA Battery compartment size Replace alarm

If you have one of the alarms in this list, please contact Customer Support. We can assist you with selecting an alternate alarm.

As you evaluate whether to replace your alarm, please note that alarms manufactured more than 10 years ago should be replaced. For more information, please read our article When should I replace my smoke alarm?

If you do not have an alarm in this list and are experiencing low battery chirps from your newly installed Roost Smart Battery, please refer to our article My Roost battery reads 0 volts! or contact Roost Customer Support.

Please note that we do not offer any warranty for Roost batteries used in smoke or combined smoke/CO alarms older than 10 years based on the manufacturing date on the alarm. If an alarm has no manufacturing date, we cannot warrant the use of the Roost Smart Battery in this alarm.

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