Home Alarm System Battery Replacement
How do I know when to replace alarm battery?
The security system typically gives warnings visually on the display panel with a dead battery indicator, and audibly via an irritating beeping noise. You can call a technician, which can be expensive, or you can take the project on yourself. Be sure to read our guide on changing home alarm system battery
How do I get the right battery for my alarm system?
When looking to purchase a new alarm battery replacement, it is important that you get a battery that matches the specifications of the one you are replacing. First check the installation manual or wiring diagram for type of battery. If you don’t have either of those then check the front of the battery for rating information. 3 things to consider when looking for a replacement alarm battery – voltage, dimensions, and AH (amp hour) rating. Be sure that your alarm replacement battery is at the very least the same dimensions and voltage. The amp hour rating (or actually capacity of the sla battery) should be somewhere in the same vicinity as your old battery – please note that a higher capacity battery with the same voltage and dimensions will actually run your alarm system longer during power outages.
How to change a Home Security System Back-Up Battery?
Step 1: Read the installation manual
First step is to locate the owner’s manual to look up what type of battery your system requres and for wiring instructions. Always obtain a replacement battery that meets the manufacturer’s specifications outlined in the owner’s manual and/or on the wiring diagram. If you don’t have either of those then check the front of the battery for rating information. 3 things to consider when looking for a replacement alarm battery – voltage, dimensions, and AH (amp hour) rating. Be sure that your alarm replacement battery is at the very least the same dimensions and voltage. The amp hour rating (or actually capacity of the sla battery) should be somewhere in the same vicinity as your old battery – please note that a higher capacity battery with the same voltage and dimensions will actually run your alarm system longer during power outages.
Afer referring to owner’s manual next step is to find the location of your security systems housing panel. Typical locations for this panel would be basements, closets, mudrooms, and other discrete but accessible locations in the house. Once the panel to your home security system has been found, it is time to remove the cover. This might involve removing a screw or two depending on the make and model of your security system. Once the panel is off, you should have full access to the alarm battery compartment.
Step 3: Place system in test or deactivate
Typically installers leave behind an engineer’s code to disable the alarm when needed. This code should be entered into the system prior to disconnecting the battery to avoid tripping the alarm. Unfortunately, without this code, removal of the battery could cause the alarm to sound. If this code is not accessible, cover the speaker of the alarm to weaken the noise while removing the battery. It is important to muffle the sound as best as possible as most alarm sound louder than 100 decibels and could cause serious damage to human eardrums if too close for longer than a few minutes. Before replacing the battery, if the system is monitored, place the account “on test” with your central station to avoid a false dispatch.
To be safe and avoid running electricity through the cables, unplug the power supply to the main panel (careful not to touch it to the circuit board or enclosure). Disconnect the battery from the circuit board. Usually the units are color coded red and black for positive and negative connections. If your panel had been neglected in the past, you may need to replace a terminal or two on the battery leads due to corrosion. A local electrical or electronics supplier should have a suitable replacement. Usually the leads are 18AWG wire.
Step 5: Install your new battery
Install the new battery into the compartment inside the panel. Paying attention to polarity reattach the cables to the battery just as they were removed. Plug the power supply to the main panel. On most alarm models, the alarm will continue to sound with the engineer’s code being entered. A message may appear that warns “Open Zone” or “Tamper”. If the engineer’s code was entered prior to the battery removal, the alarm will not continue to sound. Plug the transformer back in or reconnect the wire disconnected
If the alarm continues to sound after the battery has been installed, check the main panel tamper switches. These switches are spring loaded and are pushed back into place once the main panel door has been put back into place. Reinstall the door so that the switches are pushed in and the alarm will cease.
Depending upon the panel, you may need to reset your panel’s clock. If applicable, instructions for resetting the clock should be in your user’s manual.
IMPORTANT Don’t forget to call and clear your account from test after you are done with your servicing.