# How to Replace Batteries in an Ademco M6674 Alarm
The backup battery for the Ademco M6674 Alarm system may die after four or five years of use. You'll know you should replace it when you get the "BAT" reading on the control panel. Fortunately, changing the battery is simple and does not change any of your alarm system settings.
Things You'll Need
- Replacement battery for your Ademco M6674 alarm system
Instructions
-
-
1
Find the main alarm panel. It's usually hidden in a utility room or in the attic. It measures about 1 foot by 1.5 feet and is usually a pale color.
-
2
Open the alarm panel. You will recognize the battery because it is plugged to red and black wires.
-
3
Unplug the old battery and plug in the new one. The "BAT" indicator may not go out for several hours until the system performs an automatic test. This is normal.
-
1
Previous:
Home Alarm Systems
- How to Replace the Battery in a Home Alarm Motion Sensor
- How to Replace a Beeping Home Fire Alarm
- How to Replace the 9V Battery in a Smoke Alarm
- How to Replace the Batteries on Drill Battery Packs
- How to Change an Ademco Battery
- How to Replace a Battery in a Honeywell Alarm System
- How do I Replace an Ademco 4100 Alarm Keypad?
- How to Replace an ADT Motion Sensor Battery
- How to Replace an Alarm Battery
- How to Change an Alarm Battery
- How to Change Smoke Alarm Batteries
- How to Replace the Battery in a Firex Smoke Alarm
