Control Panel Battery
Many alarm systems use a rechargeable backup battery inside or near the main control panel. A system battery trouble may refer to this backup battery rather than a wireless sensor.
Battery Replacement GuideLow Battery?
Low Battery?
Start Here.
A low-battery message can come from the main security system or from an individual wireless device. The first step is figuring out which device actually needs attention.
Step One
What Is Showing the Low Battery?
The warning may be coming from the main alarm system or from an individual wireless device somewhere in the home or business.
Sensor Battery
Door contacts, window contacts, motion detectors, and other wireless devices may use replaceable lithium, coin-cell, or standard batteries.
Keypad or Other Device
Some keypads and connected security devices may also report battery trouble. Battery requirements depend on the exact equipment installed.
Common Battery Types
Several Batteries May Be Used in One System.
The correct replacement depends on the exact equipment reporting the trouble condition. Do not assume every sensor in the system uses the same battery.
If you are unsure, Guardian can help identify the device and the proper replacement battery before you purchase one.
CR123A Lithium
Commonly used in wireless security devices.
CR2032 Coin Cell
Used by some compact wireless devices.
CR2430 Coin Cell
Another coin-cell battery used by certain devices.
AA Battery
Some security devices use standard AA batteries.
Rechargeable Control-Panel Backup Battery
Main alarm panels may use a rechargeable backup battery. The required size and type varies by system.
Battery Replacement
Before Replacing a Battery.
Read the Trouble Message
Check the security keypad, touchscreen, or connected app and note exactly what the system is reporting.
Identify the Device
Determine whether the message refers to the main control panel or a specific wireless sensor or device.
Verify the Battery
Check the existing battery, equipment documentation, or device model before purchasing a replacement.
Still Not Sure?
Send Guardian a service request and we can help identify the correct device and battery.
Need Help?
We Can Help Identify the Battery.
If you are not sure which device is reporting the problem or which replacement battery you need, send Guardian a service request.