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Best Buy customers often prefer the following products when searching for battery for fire alarm.

Fire alarms are critical safety devices for your home, and possibly the most important. And while most home fire alarms last about 10 years, it's still a good idea to replace the battery every year or so. Here are some of the best batteries for keeping your smoke alarm at its best.

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  1. UltraLast - 9V Batteries (12-Pack) - Front_Zoom

    Model: UL129VB
    SKU: 5894045
    Top comment

    "I will continue buying these batteries....Bought these for our smoke alarms that are hardwired with battery backup. "

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    Product Description

    Keep toys and gadgets running smoothly with these UltraLast 9V batteries. This pack includes 12 alkaline cells, so you can stock the supply room or gadget drawer.
    See all Alkaline Batteries
    Top comment

    "I will continue buying these batteries....Bought these for our smoke alarms that are hardwired with battery backup. "

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    Product Description

    Keep toys and gadgets running smoothly with these UltraLast 9V batteries. This pack includes 12 alkaline cells, so you can stock the supply room or gadget drawer.
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    Your price for this item is $34.95
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  2. Best Buy essentials™ - 9 V Batteries (4-Pack) - Front_Zoom
    Top comment

    "Just needed to replace a fire alarm. As long as it stops the beeping for low battery, its good!...Needed to replace fire alarm batteries..These did the trick. Easy Peasy."

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    Product Description

    They’re just batteries – until your electronics are powerless. The Best Buy essentials BE-B9V4PK 9 V Batteries (4-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This pack contains 4 alkaline 9 V batteries, ensuring you always have backups when you need them. Safe and environmentally friendly, they are also mercury- and cadmium-free. They deliver a long-lasting and reliable charge with a 500 mAh capacity and 9 V of power, ensuring your remote controls, alarms and other electronics are ready to go. Be prepared for the next time you need power with alkaline batteries Backed by Best Buy.
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    Top comment

    "Just needed to replace a fire alarm. As long as it stops the beeping for low battery, its good!...Needed to replace fire alarm batteries..These did the trick. Easy Peasy."

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    Product Description

    They’re just batteries – until your electronics are powerless. The Best Buy essentials BE-B9V4PK 9 V Batteries (4-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This pack contains 4 alkaline 9 V batteries, ensuring you always have backups when you need them. Safe and environmentally friendly, they are also mercury- and cadmium-free. They deliver a long-lasting and reliable charge with a 500 mAh capacity and 9 V of power, ensuring your remote controls, alarms and other electronics are ready to go. Be prepared for the next time you need power with alkaline batteries Backed by Best Buy.
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    Your price for this item is $7.99
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  3. Best Buy essentials™ - Assorted Batteries with Storage Box (33-Pack) - Alt_View_Zoom_11
    Top comment

    "Good battery life...These batteries last a long time. I would say comparable to the name brand....I have purchased this brand before and battery life is good. Would recommend and continue to purchase."

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    Product Description

    They’re just batteries—until your electronics need power. The Best Buy essentials BE-BMULTIPK Assorted Batteries with Storage Box (33-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This alkaline battery kit contains AA batteries (12), AAA batteries (12), C batteries (4), D batteries (4) and a 9 V battery, providing you with more than enough backups for when you need them. Safe and environmentally friendly, they are also mercury and cadmium free. The batteries also come in an included storage box, keeping them neatly stored and organized. Be prepared for the next time you need power with alkaline batteries Backed by Best Buy.
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    Top comment

    "Good battery life...These batteries last a long time. I would say comparable to the name brand....I have purchased this brand before and battery life is good. Would recommend and continue to purchase."

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    Product Description

    They’re just batteries—until your electronics need power. The Best Buy essentials BE-BMULTIPK Assorted Batteries with Storage Box (33-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This alkaline battery kit contains AA batteries (12), AAA batteries (12), C batteries (4), D batteries (4) and a 9 V battery, providing you with more than enough backups for when you need them. Safe and environmentally friendly, they are also mercury and cadmium free. The batteries also come in an included storage box, keeping them neatly stored and organized. Be prepared for the next time you need power with alkaline batteries Backed by Best Buy.
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    Your price for this item is $19.99
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  4. Energizer MAX 9V Batteries (4 Pack), 9 Volt Alkaline Batteries - Front_Zoom
    Top comment

    "Batteries...Have them in my fire alarm serves long and seem to work well...I am using this alkaline 9 volt battery for my fire alarm. In my opinion a good quality battery is good for fire alarms so it will be a long time till it needs replaced. "

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    Product Description

    Energizer MAX 9V Alkaline Batteries are all about long lasting power for your everyday devices. Made to last, not to leak, these Energizer batteries fuel the technology that helps you live, work and play. Use these Energizer 9 volt batteries to power a variety of everyday gadgets and household items, whether you need smoke detector batteries, remote control car batteries, or 9V batteries for your child's favorite toys and games. With a shelf life of up to 5 years, these batteries are ready to keep your devices operating when you need them most. Depend on Energizer MAX 9 volt alkaline batteries to fuel your everyday electronics, whether you're at home, work or play.
    See all Alkaline Batteries
    Top comment

    "Batteries...Have them in my fire alarm serves long and seem to work well...I am using this alkaline 9 volt battery for my fire alarm. In my opinion a good quality battery is good for fire alarms so it will be a long time till it needs replaced. "

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    Product Description

    Energizer MAX 9V Alkaline Batteries are all about long lasting power for your everyday devices. Made to last, not to leak, these Energizer batteries fuel the technology that helps you live, work and play. Use these Energizer 9 volt batteries to power a variety of everyday gadgets and household items, whether you need smoke detector batteries, remote control car batteries, or 9V batteries for your child's favorite toys and games. With a shelf life of up to 5 years, these batteries are ready to keep your devices operating when you need them most. Depend on Energizer MAX 9 volt alkaline batteries to fuel your everyday electronics, whether you're at home, work or play.
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    Your price for this item is $21.49
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  5. Energizer MAX C Batteries (2 Pack), C Cell Alkaline Batteries - Front_Zoom
    Top comment

    "Great batteries that will last long...I have been using these batteries for a while now. They are very reliable for fire alarms, which 9V's are generally used for. ...Great battery life!...The energizer batteries have never let us down. They are powerful and last a lot of hours, so much more life than the off brand batteries."

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    Product Description

    You can rely on your devices when you rely on the power of Energizer MAX Alkaline C Batteries. Made to last, not to leak, these Energizer batteries deliver long lasting power for your everyday devices. Energizer C batteries fuel the technology that helps you work and play, whether you need batteries for flashlights and children's toys or backup batteries for radios and other electronics. With a shelf life up to 10 years in storage, these C cell batteries are there when you need them. Trust the power of Energizer MAX C Batteries to keep the devices you love powered when you need them most.
    See all Household Batteries
    Top comment

    "Great batteries that will last long...I have been using these batteries for a while now. They are very reliable for fire alarms, which 9V's are generally used for. ...Great battery life!...The energizer batteries have never let us down. They are powerful and last a lot of hours, so much more life than the off brand batteries."

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    Product Description

    You can rely on your devices when you rely on the power of Energizer MAX Alkaline C Batteries. Made to last, not to leak, these Energizer batteries deliver long lasting power for your everyday devices. Energizer C batteries fuel the technology that helps you work and play, whether you need batteries for flashlights and children's toys or backup batteries for radios and other electronics. With a shelf life up to 10 years in storage, these C cell batteries are there when you need them. Trust the power of Energizer MAX C Batteries to keep the devices you love powered when you need them most.
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    Your price for this item is $4.49
    Clearance
    The regular price is $8.49
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  6. Energizer Ultimate Lithium AAA Batteries (8 Pack), Triple A Batteries - Front_Zoom
    Top comment

    "Battery life!...Batteries are a necessity and energizer always comes in clutch!...Love these batteries...[This review was collected as part of a promotion.] These batteries seem to last forever! No more taking the old ones out of the fire alarm for my tv remote. "

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    Product Description

    Experience lasting performance with Energizer Ultimate Lithium AAA Batteries. These household batteries are not only the #1 longest lasting AAA batteries in high-tech devices, but they also feature leak resistant construction and superior performance in extreme temperatures ranging from -40 degrees F to 140 degrees F. Use these AAA lithium batteries to power a variety of high tech and household items, whether you need batteries for flashlights, game controllers, digital cameras, or your child's favorite toys and games. Ultimate Lithium Energizer AAA batteries weigh one-third less than standard alkaline triple A batteries, making them a lightweight power source. Energizer Ultimate Lithium batteries also hold power for up to 20 years in storage, letting you keep a ready supply of backup batteries. To ensure your favorite devices operate at their peak performance, depend on Energizer Ultimate Lithium batteries for work, play and home.
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    Top comment

    "Battery life!...Batteries are a necessity and energizer always comes in clutch!...Love these batteries...[This review was collected as part of a promotion.] These batteries seem to last forever! No more taking the old ones out of the fire alarm for my tv remote. "

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    Product Description

    Experience lasting performance with Energizer Ultimate Lithium AAA Batteries. These household batteries are not only the #1 longest lasting AAA batteries in high-tech devices, but they also feature leak resistant construction and superior performance in extreme temperatures ranging from -40 degrees F to 140 degrees F. Use these AAA lithium batteries to power a variety of high tech and household items, whether you need batteries for flashlights, game controllers, digital cameras, or your child's favorite toys and games. Ultimate Lithium Energizer AAA batteries weigh one-third less than standard alkaline triple A batteries, making them a lightweight power source. Energizer Ultimate Lithium batteries also hold power for up to 20 years in storage, letting you keep a ready supply of backup batteries. To ensure your favorite devices operate at their peak performance, depend on Energizer Ultimate Lithium batteries for work, play and home.
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    Your price for this item is $24.99
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  7. Energizer 123 Lithium Batteries (4 Pack), 3V Photo Batteries - Front_Zoom
    Top comment

    "That’s exactly what I needed for my fire alarm!...They're batteries...Worked for what they're needed for, my fire alarm which takes this specific battery. They last a very long time at least."

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    Product Description

    Energizer 123 Lithium Photo Batteries deliver reliable performance for your high tech devices. Place these powerful batteries in your cameras, and capture that perfect photo or video without worrying about your batteries running low. Lithium 123 batteries are also a long lasting, dependable choice when you need flashlight batteries or replacement batteries for your smart home devices. Energizer 123 lithium batteries last up to 10 years in storage, letting you keep a ready supply available when you need them. Count on Energizer lithium batteries to ensure your high tech devices stay powered and ready to capture precious memories.
    See all Camera Batteries & Power
    Top comment

    "That’s exactly what I needed for my fire alarm!...They're batteries...Worked for what they're needed for, my fire alarm which takes this specific battery. They last a very long time at least."

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    Product Description

    Energizer 123 Lithium Photo Batteries deliver reliable performance for your high tech devices. Place these powerful batteries in your cameras, and capture that perfect photo or video without worrying about your batteries running low. Lithium 123 batteries are also a long lasting, dependable choice when you need flashlight batteries or replacement batteries for your smart home devices. Energizer 123 lithium batteries last up to 10 years in storage, letting you keep a ready supply available when you need them. Count on Energizer lithium batteries to ensure your high tech devices stay powered and ready to capture precious memories.
    See all Camera Batteries & Power
    Your price for this item is $20.99
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  8. Energizer Ultimate Lithium AAA Batteries (2 Pack), Triple A Batteries - Front_Zoom
    Top comment

    "best for smoke alarms...After coming home one March, our house was on the verge of freezing! Our batteries had run out . These batteries have never let us down....Solid batteries, good battery life. Nothing outlasts the Energizer bunny."

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    Product Description

    Experience lasting performance with Energizer Ultimate Lithium AAA Batteries. These household batteries are not only the #1 longest lasting AAA batteries in high-tech devices, but they also feature leak resistant construction and superior performance in extreme temperatures ranging from -40 degrees F to 140 degrees F. Use these AAA lithium batteries to power a variety of high tech and household items, whether you need batteries for flashlights, game controllers, digital cameras, or your child's favorite toys and games. Ultimate Lithium Energizer AAA batteries weigh one-third less than standard alkaline triple A batteries, making them a lightweight power source. Energizer Ultimate Lithium batteries also hold power for up to 20 years in storage, letting you keep a ready supply of backup batteries. To ensure your favorite devices operate at their peak performance, depend on Energizer Ultimate Lithium batteries for work, play and home.
    See all Lithium Batteries
    Top comment

    "best for smoke alarms...After coming home one March, our house was on the verge of freezing! Our batteries had run out . These batteries have never let us down....Solid batteries, good battery life. Nothing outlasts the Energizer bunny."

    See all customer reviews

    Product Description

    Experience lasting performance with Energizer Ultimate Lithium AAA Batteries. These household batteries are not only the #1 longest lasting AAA batteries in high-tech devices, but they also feature leak resistant construction and superior performance in extreme temperatures ranging from -40 degrees F to 140 degrees F. Use these AAA lithium batteries to power a variety of high tech and household items, whether you need batteries for flashlights, game controllers, digital cameras, or your child's favorite toys and games. Ultimate Lithium Energizer AAA batteries weigh one-third less than standard alkaline triple A batteries, making them a lightweight power source. Energizer Ultimate Lithium batteries also hold power for up to 20 years in storage, letting you keep a ready supply of backup batteries. To ensure your favorite devices operate at their peak performance, depend on Energizer Ultimate Lithium batteries for work, play and home.
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    Your price for this item is $8.99
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  9. Energizer MAX AAA Batteries (20 Pack), Triple A Alkaline Batteries - Front_Zoom
    Top comment

    "I’ve always purchased Energizer batteries for home and office. I rely on them for my smoke alarms, TV remotes and so much more! ...These batteries never fail to deliver what the promise and that is longer battery life. "

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    Product Description

    Power the devices you love with Energizer MAX AAA Alkaline Batteries. These Energizer batteries fuel the technology that helps you live, work and play, whether you need batteries for everyday electronics like your wireless mouse or toy batteries for your child's favorite toys. Energizer's #1 longest-lasting MAX, these triple A batteries keep your favorite devices running longer. Powerseal Technology helps protect your devices against damaging leaks for up to two years after these batteries are fully used. With a shelf life of up to 10 years in storage, these Energizer AAA batteries are ready to keep your devices operating when you need them most. Depend on the power of Energizer MAX AAA Batteries to power your everyday electronics.
    See all Alkaline Batteries
    Top comment

    "I’ve always purchased Energizer batteries for home and office. I rely on them for my smoke alarms, TV remotes and so much more! ...These batteries never fail to deliver what the promise and that is longer battery life. "

    See all customer reviews

    Product Description

    Power the devices you love with Energizer MAX AAA Alkaline Batteries. These Energizer batteries fuel the technology that helps you live, work and play, whether you need batteries for everyday electronics like your wireless mouse or toy batteries for your child's favorite toys. Energizer's #1 longest-lasting MAX, these triple A batteries keep your favorite devices running longer. Powerseal Technology helps protect your devices against damaging leaks for up to two years after these batteries are fully used. With a shelf life of up to 10 years in storage, these Energizer AAA batteries are ready to keep your devices operating when you need them most. Depend on the power of Energizer MAX AAA Batteries to power your everyday electronics.
    See all Alkaline Batteries
    Your price for this item is $23.99
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  10. Energizer 123 Lithium Batteries (12 Pack), 3V Photo Batteries - Front_Zoom
    Top comment

    "great for smoke alarms...good batteries for my att smoke alarms. seem to last...Used for Newer Smoke Alarms...Only thing to share is this particular size I needed for the newer Smoke Alarms we use. It takes two batteries each."

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    Product Description

    Energizer 123 Lithium Photo Batteries deliver reliable performance for your high tech devices. Place these powerful batteries in your cameras, and capture that perfect photo or video without worrying about your batteries running low. Lithium 123 batteries are also a long lasting, dependable choice when you need flashlight batteries or replacement batteries for your smart home devices. Energizer 123 lithium batteries last up to 10 years in storage, letting you keep a ready supply available when you need them. Count on Energizer lithium batteries to ensure your high tech devices stay powered and ready to capture precious memories.
    See all Lithium Batteries
    Top comment

    "great for smoke alarms...good batteries for my att smoke alarms. seem to last...Used for Newer Smoke Alarms...Only thing to share is this particular size I needed for the newer Smoke Alarms we use. It takes two batteries each."

    See all customer reviews

    Product Description

    Energizer 123 Lithium Photo Batteries deliver reliable performance for your high tech devices. Place these powerful batteries in your cameras, and capture that perfect photo or video without worrying about your batteries running low. Lithium 123 batteries are also a long lasting, dependable choice when you need flashlight batteries or replacement batteries for your smart home devices. Energizer 123 lithium batteries last up to 10 years in storage, letting you keep a ready supply available when you need them. Count on Energizer lithium batteries to ensure your high tech devices stay powered and ready to capture precious memories.
    See all Lithium Batteries
    Your price for this item is $49.99
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