T
The Daily Insight

How much is a new battery for a burglar alarm?

Author

Emily Sparks

Published Feb 23, 2026

How much is a new battery for a burglar alarm?

The typical cost of a replacement burglar alarm battery is between £12 and £30 depending on the type and make of battery.

Do you have to replace the batteries in your alarm system?

Because of this, you have to replace your batteries as needed. Doing this ensures that your batteries will provide backup power to your system for longer periods. Also, a low battery can trigger a false alarm, so having consistent battery levels will spare you from this inconvenience.

Can a home battery be replaced without a technician?

Yes, you can definitely replace the battery in your home alarm without a technician. The process takes less than 5 minutes. You may need to call the alarm company afterwards to clear the error from your alarm panel. The process is easy and can be done without a technician.

Where is the back up battery on an alarm system?

Once the panel is open, locate the back-up battery. For standard alarm systems, this will be a brick-like unit resting in the bottom of the enclosure. Remove one of the leads from the battery by wiggling the connector from side to side while pulling.

What kind of battery do I need for my home security system?

If you aren’t sure what type of battery is needed for your home security system contact your alarm system provider. If you do chose to venture into replacing a battery on your own, be sure to use the same voltage rating and amp-hour rating already installed in each device.

How to DIY replace your alarm system battery?

How to DIY Replace Your Alarm System Battery. 1 1. Know When It Needs To Be Changed. Alarm batteries need to be changed every 3 to 5 years. Your home’s security system should alert you when the 2 2. Locate the Control Panel. 3 3. Identifying the Battery. 4 4. Disconnecting the Battery. 5 5. Replacing the Battery.

Do you need to replace your security system battery?

Power outages occur, and your security system is ready to handle it! Security systems are our protection from criminal activity. In order to keep our homes safe, we must keep up with our security system’s maintenance, which includes replacing the battery.

What kind of battery does an alarm system need?

When a battery is getting too weak and needs replacing, your system may send you an alert or show ‘Lo Bat’ on the keypad display. The Alarm Panel requires (1) 12 volt, 4, 5, 7 or 8 Amp Hours Sealed Lead Acid battery. The size of the battery depends upon your specific panel and the types of equipment you have installed on your system.