In the beginning, you’ll have to remove the alarm and then locate your battery’s compartment.

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1. If the alarm is wired to the wall, shut off your power.
2. Take the alarm off the wall or ceiling.
3. Look for the alarm’s model on the reverse side of the alarm.
4. Look at the chart on this article or in your user’s manual for the appropriate replacement battery, usually 9V or AA.

If you’ve purchased brand new batteries, now it’s now time to install them and mount the device.

1. The battery drawer is open. If the drawer is locked, you’ll have to remove the pin with tamperproof locks.
2. Remove any batteries that are no longer in use.
3. The Test/Reset button should be held for 10 seconds, allowing it to fully rid the detector.
4. Make sure that the fresh batteries are inserted correctly and that the contacts are facing in the correct direction.
5. Close the drawer for batteries and mount your unit.

Replacement Battery Types:

The majority of detectors use 9V or AA batteries. Make sure to use brands like Duracell, Energizer, or Eveready batteries that have an expiration date of 4plus years after the date of today.

Check out the list below to determine the correct batteries for the common Alarms. Alert alarms.

If your alarm is emitting a low-battery “chirp” about once per 30 to 60 seconds, it’s time to change your battery. Alarms that have batteries that are removable (non-sealed) batteries will require fresh batteries approximately once a year.

When to Replace Batteries:

The distinctive, but somewhat irritating chirp out of your CO alarm is a sign that it’s time to replace the batteries. First Alert CO alarms chirp every 30-60 seconds when the batteries are low.

Even if the batteries of your alarm aren’t drained It’s recommended to replace them every year. Replace all alarm batteries powered by batteries every day for instance, when the clock changes in spring to help you remember the last time you changed the batteries. If you own a lot of battery-powered CO and smoke alarms in your home Make a list of them all and cross them off the list every time you replace batteries.

Locating the Battery Compartment:

The First Alert CO alarms vary between the models and one that follows in terms of the type of battery and the position of the compartment for the battery. For example, CO alarms that are rectangular in the First Alert’s 400 and 605 series come with an internal battery compartment that is located in the back of the unit. In addition, plug-in models that have batteries backup, like CO615, CO615, First Alert have an accessible battery compartment on their front. First Alert’s CO and smoke alarms, like the SCO7 model, have an adjustable battery compartment that extends from the sides of the detector, which makes it simple to change batteries without dismantling the detector.