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Where Can I Buy Home Security Batteries?

By Celeste Tholen

Managing Editor

Published on April 12, 2021

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 components that might run on batteries include the following:

Control panels
Keypads
Door and window sensors
Smart thermostats
Smart door locks
Wireless cameras
Glass break detectors
Smart smoke alarms

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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.

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 power cords, which can make a system look more conspicuous. To figure out if a wireless security system is right for you, check out our How to Choose a Security System page.

Compare the best home security systems

Brand	Best for	Lowest monitoring price	Starter equipment price	Contract required	Installation	Smart home compatibility	Learn more	Read review
Vivint	Best overall	$29.99/mo.	$599.00	No *	Pro	Amazon, Google, Z-Wave	View Packages	Read review
Frontpoint	High-end DIY pick	$34.99/mo.	$99.00	No	DIY	Amazon, Google, Z-Wave	View Packages	Read review
SimpliSafe	Reader favorite	$14.99/mo.	$229.00	No	DIY	Amazon, Google	View Packages	Read review
Cove	Best customer experience	$14.99/mo.	Quote required	No *	DIY	Amazon, Google	View Packages	Read review
ADT	Most experienced	$27.99/mo.	$0.00	Yes	Pro	Amazon, Google, Z-Wave	View Packages	Read review

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.

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 people 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 continues to report on local news as a volunteer with the community paper. For the last six years, she’s led a Girl Scout troop, teaching girls about safety and preparing for whatever life throws their way.