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alkaline batteries

Security System Battery

The security system battery is a device that powers the alarm system in your home. It is important to replace the battery regularly or your alarm system will not work. Browse the top-ranked list of security system batteries below along with associated reviews and opinions. 

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  1. Energizer - A23 Batteries (2 Pack), Miniature Alkaline Small Batteries

    SKU: J78676GJ2H

    repaced old battery...needed to replace battery for security alarm key fob......Battery...Best Buy had the battery I needed for a security system key fob. Worked like a charm.

    Product Description

    A pack of two silver miniature alkaline batteries providing reliable 12-volt power for small electronic devices.
    See all Alkaline Batteries
    Your price for this item is $2.99
    Save $3
    The previous price was $6.49

  2. SimpliSafe - Rechargeable Battery for Outdoor Security Camera

    SKU: J362VFS3S8

    Contingency for battery supply...I keep extra batteries available to swap into my SimpliSafe security devices while I recharge others....Battery...I love the Simpli Safe Security System. The rechargeable...

    Product Description

    A rechargeable black battery that quickly restores power to your wireless outdoor security camera.
    See all Home Security Accessories
    Your price for this item is $29.99

  3. Blink - Outdoor 4 Battery Extension Pack — For Outdoor 4 smart security camera, 4-year battery life, batteries incl.

    SKU: J39HW6P4WV

    A great enhancement to the security system...The extended battery pack is an easy addition to the Blink 4 camera, adding two extra batteries.

    Product Description

    An easy-to-install battery extension pack that provides up to four years of power for compatible outdoor cameras.
    See all Surveillance Camera Mounts
    Your price for this item is $29.99

  4. Security 6,500 mAh Battery Pack For eufy Video Doorbell E340

    SKU: JJ858RJXGC

    Product Description

    A rechargeable black battery pack with 6,500 mAh capacity and USB-C connectivity for reliable doorbell power.
    See all Smart Doorbells
    Your price for this item is $39.99

  5. Vosker - V-LIT-B3 Rechargeable Lithium Battery for V300

    SKU: JXCVL45Z97

    Product Description

    A rechargeable black lithium battery pack designed for uninterrupted use with compatible mobile security cameras.
    See all Security Camera & System Accessories
    Your price for this item is $69.99

  6. Chamberlain - myQ Video Keypad Rechargeable Battery - Black

    SKU: J7C7TZFG56

    Product Description

    A rechargeable black battery that keeps your video keypad powered and ready as a reliable backup.
    See all Smart Doorbells
    Your price for this item is $32.99
    Save $2
    The previous price was $34.99
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In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.