Where Can I Buy Home Security Batteries?

To determine what kind of battery you need, follow these steps.

1. Determine which component needs a battery

If your control panel is emitting a low-battery noise, figure out which security element is the source of the problem. Some common security components that might run on batteries include the following:

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2. Call the monitoring center to alert a representative that you will be changing batteries

Alarm monitoring companies may flag the system as having been tampered with if you start removing batteries from components. Letting the monitoring center know you’ll be changing the batteries can prevent an unexpected visit from the police.

3. Determine what type of replacement you need

At this point, you’ll be able to determine what type of battery the device needs. In general, the only components that might require special batteries are the control panel and keypad. Alarm system control panels often take large 12V batteries. The keypads of smart security systems might use a special battery pack, although many older keypads just take AAs.

Any other components are likely to use AA batteries or the round, flat batteries often used in watches.

To help you find the right battery, we've listed the batteries used by popular security brands on these pages:

4. Purchase and install a replacement

After you figure out which type of battery you need, you can head to the store to pick up the replacement.

If you need a battery that your convenience store doesn’t carry, you typically have two choices: contact your home security company to order a replacement or take the battery to a specialty store to have them order one for you.

Once you have the right battery replacement, carefully remove the dead battery from the device—remembering to dispose of it properly—and install the new battery. You can then call the monitoring center to let them know the battery replacement is complete.

While changing a system’s batteries does add another step to security maintenance, many people gladly take on the responsibility to avoid dealing with hardwiring and power cords, which can make a system look more conspicuous. 

Compare the best home security systems

Brand
Best for
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Learn more
Read review
Best overall$599.00
Icon Yes  LightNo *
Amazon,
Google,
Z-Wave
Budget pick$245.00
Icon Yes  LightNo
Amazon,
Google
Quality DIY pick$129.00
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Amazon,
Google,
Z-Wave
Most experienced$0.00
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Amazon,
Google,
Z-Wave
Best DIY automation$279.00
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Amazon, Apple, Google, Z-Wave, Zigbee

Info current as of 04/12/21. Offers and availability may vary by location and are subject to change.
*$0 due up-front with consumer financing.
†No-contract options available with outright equipment purchase.
‡Landline monitoring only. Some restrictions apply. (Full disclaimer)
**With $99 installation charge and new monitoring agreement. Early termination fee applies. See full disclaimer for full offer details, terms, and conditions.

Celeste Tholen
Written by
Celeste Tholen
Celeste has dedicated her decade-long career to reporting and reviews that help people make well-informed decisions. She oversees editorial strategy and production for SafeWise, with a goal to help everyone find the information they need to make their homes and lives safer. Prior to SafeWise, she worked as an editor and reporter for KSL and Deseret News. She holds a Bachelor's degree in Journalism. In her free time, she volunteers at the local botanical garden and writers for the community newspaper.

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