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Best Buy customers often prefer the following products when searching for smoke batteries.

Smoke detectors alert you to the presence of smoke, giving you time to escape and call for help in case of danger. They are a necessary part of home fire safety, but for them to function properly, they need to have working batteries. There are various types of batteries for smoke alarms. Browse the top-ranked list of smoke alarm batteries below along with associated reviews and opinions.

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  1. Best Buy essentials™ - 9 V Batteries (4-Pack) - Front_Zoom
    Top comment

    "Smoke Alarm Battery...Great day for Smoke Alarm battery. You can't get 4 battery anywhere else for this price....Great for smoke alarm...These batteries work. Great for smoke alarm. Also toys."

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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.
    See all Alkaline Batteries
    Top comment

    "Smoke Alarm Battery...Great day for Smoke Alarm battery. You can't get 4 battery anywhere else for this price....Great for smoke alarm...These batteries work. Great for smoke alarm. Also toys."

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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.
    See all Alkaline Batteries
    See all Alkaline Batteries
  2. Best Buy essentials™ - CR123 Batteries (6-Pack) - Alt_View_Zoom_11
    Top comment

    "Batteries...Works like it suppose to in our smoke alarm. Once we put in the battery the alarms ceased....Battery...What I needed was perfect replacement for my smoke alarm"

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    Product Description

    They’re just batteries – until your keyless entry is dead. The Best Buy essentials BE-B1236PK CR123 Batteries (6-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This pack contains 6 lithium CR123 batteries, providing you with enough backups for when you need them. They deliver a reliable charge with a 1,400 mAh capacity and 3 V of power, ensuring your keyless entries, glucometers, games and other compatible electronics are ready to go. Be prepared for the next time you need power with batteries Backed by Best Buy.
    See all Alkaline Batteries
    Top comment

    "Batteries...Works like it suppose to in our smoke alarm. Once we put in the battery the alarms ceased....Battery...What I needed was perfect replacement for my smoke alarm"

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    Product Description

    They’re just batteries – until your keyless entry is dead. The Best Buy essentials BE-B1236PK CR123 Batteries (6-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This pack contains 6 lithium CR123 batteries, providing you with enough backups for when you need them. They deliver a reliable charge with a 1,400 mAh capacity and 3 V of power, ensuring your keyless entries, glucometers, games and other compatible electronics are ready to go. Be prepared for the next time you need power with batteries Backed by Best Buy.
    See all Alkaline Batteries
    See all Alkaline Batteries
  3. Best Buy essentials™ - AA / AAA Batteries (36-Pack) - Front_Zoom
    Top comment

    "Works great for my smoke alarms....Works just as intended. The batteries have long life compared to energizer. Great quality and great price....Batteries...Cant go wrong with these when you need a pair for remotes and smoke detectors."

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    Product Description

    They’re just batteries – until your remote control is powerless. The Best Buy essentials BE-B36KIT AA / AAA Batteries (36-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This alkaline battery kit contains 24 AA and 12 AAA batteries for a total of 36 batteries, providing you with more than enough backups for when you need them. Safe and environmentally friendly, they are also mercury- and cadmium-free. They deliver a reliable charge with a 2,900 and a 1,300 mAh capacity and 1.5 V of power, ensuring your remote controls, toys, cameras and other electronics are ready to go. Be prepared for the next time you need power with alkaline batteries Backed by Best Buy.
    See all Alkaline Batteries
    Top comment

    "Works great for my smoke alarms....Works just as intended. The batteries have long life compared to energizer. Great quality and great price....Batteries...Cant go wrong with these when you need a pair for remotes and smoke detectors."

    See all customer reviews

    Product Description

    They’re just batteries – until your remote control is powerless. The Best Buy essentials BE-B36KIT AA / AAA Batteries (36-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This alkaline battery kit contains 24 AA and 12 AAA batteries for a total of 36 batteries, providing you with more than enough backups for when you need them. Safe and environmentally friendly, they are also mercury- and cadmium-free. They deliver a reliable charge with a 2,900 and a 1,300 mAh capacity and 1.5 V of power, ensuring your remote controls, toys, cameras and other electronics are ready to go. Be prepared for the next time you need power with alkaline batteries Backed by Best Buy.
    See all Alkaline Batteries
    See all Alkaline Batteries
  4. Panasonic - eneloop Rechargeable AA Batteries (12-Pack) - Front_Zoom
    Top comment

    "Great rechargeable batteries....We must have a hundred of these in our house in smoke detectors, professional photography equipment, smoke alarms, toys, etc. ...battery...They are good long lasting batteries for a good price."

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    Product Description

    Power your household electronics easily with these Panasonic eneloop BK-3MCCA12SA AA batteries, which come precharged for immediate use and can be recharged up to 2100 times for a long-lasting design. The batteries withstand the cold for versatility.
    See all Rechargeable Batteries
    Top comment

    "Great rechargeable batteries....We must have a hundred of these in our house in smoke detectors, professional photography equipment, smoke alarms, toys, etc. ...battery...They are good long lasting batteries for a good price."

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    Product Description

    Power your household electronics easily with these Panasonic eneloop BK-3MCCA12SA AA batteries, which come precharged for immediate use and can be recharged up to 2100 times for a long-lasting design. The batteries withstand the cold for versatility.
    See all Rechargeable Batteries
    See all Rechargeable Batteries
  5. Energizer - MAX 9V Batteries (4 Pack), 9 Volt Alkaline Batteries - Front_Zoom
    Top comment

    "Needed it for smoke alarm!...I needed these for a smoke alarm. I’m glad Best Buy has them....Good batteries...Great quality batteries use it for my remote ceiling fan and smoke alarm detector very reliable and long lasting."

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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

    "Needed it for smoke alarm!...I needed these for a smoke alarm. I’m glad Best Buy has them....Good batteries...Great quality batteries use it for my remote ceiling fan and smoke alarm detector very reliable and long lasting."

    See all customer reviews

    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
    See all Alkaline Batteries
  6. Energizer - A23 Batteries (1 Pack), Miniature Alkaline Small Batteries - Front_Zoom
    Top comment

    "For smoke detector...These were what I needed for my smoke detectors. Worked great...Energizer Battery for smoke detector...battery replacement worked fine just like any other alkaline battery"

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    Product Description

    Energizer A23 Batteries provide reliable power to your important gadgets. These mini batteries are compatible with a variety of devices, including your keyless entry system, bluetooth headsets and home security systems. Reach for these specialty batteries when you need replacement camera batteries or a new garage door opener battery. Miniature alkaline Energizer batteries contain zero mercury to reduce environmental impact. Count on Energizer, the #1 brand of specialty batteries, to deliver dependable, long lasting power to your devices.
    See all Alkaline Batteries
    Top comment

    "For smoke detector...These were what I needed for my smoke detectors. Worked great...Energizer Battery for smoke detector...battery replacement worked fine just like any other alkaline battery"

    See all customer reviews

    Product Description

    Energizer A23 Batteries provide reliable power to your important gadgets. These mini batteries are compatible with a variety of devices, including your keyless entry system, bluetooth headsets and home security systems. Reach for these specialty batteries when you need replacement camera batteries or a new garage door opener battery. Miniature alkaline Energizer batteries contain zero mercury to reduce environmental impact. Count on Energizer, the #1 brand of specialty batteries, to deliver dependable, long lasting power to your devices.
    See all Alkaline Batteries
    See all Alkaline Batteries
  7. Best Buy essentials™ - Assorted Batteries with Storage Box (33-Pack) - Alt_View_Zoom_11
    Top comment

    "Since most people use those in their smoke detectors it seems like others would like more too....But only one 9v battery (I needed 4 just for the fire alarms in my ceilings, and they are in everything from bathroom scales to mini-speakers; it would be useful to have a half-dozen on hand.)"

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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.
    See all Alkaline Batteries
    Top comment

    "Since most people use those in their smoke detectors it seems like others would like more too....But only one 9v battery (I needed 4 just for the fire alarms in my ceilings, and they are in everything from bathroom scales to mini-speakers; it would be useful to have a half-dozen on hand.)"

    See all customer reviews

    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.
    See all Alkaline Batteries
    See all Alkaline Batteries
  8. Energizer - MAX 9V Batteries (2 Pack), 9 Volt Alkaline Batteries - Front_Zoom
    Top comment

    "For Smoke alarm...Did the trick! Perfect smoke alarm replacement batteries....Long lasting battery I used for smoke alarm detector."

    See all customer reviews

    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

    "For Smoke alarm...Did the trick! Perfect smoke alarm replacement batteries....Long lasting battery I used for smoke alarm detector."

    See all customer reviews

    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
    See all Alkaline Batteries
  9. Best Buy essentials™ - AA Batteries (8-Pack) - Alt_View_Zoom_11
    Top comment

    "Great batterys.. nice long useage. Have them in the smoke detectors, clock. Flashlights ect....Good batteries at a fraction of the pice. Unless you need batteries for a smoke detector or something like that, get these."

    See all customer reviews

    Product Description

    They’re just batteries – until your remote control is dead. The Best Buy essentials BE-BAA8PK AA Batteries (8-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This pack contains 8 alkaline AA batteries, ensuring you have enough to power your device. Safe and environmentally friendly, they are also mercury- and cadmium-free. They deliver a long-lasting and reliable charge with a 2,900 mAh capacity and 1.5 V of power, ensuring your toys, remote controls, cameras and other electronics are ready to go. Keep your favorite electronics powered with alkaline batteries backed by Best Buy.
    See all Alkaline Batteries
    Top comment

    "Great batterys.. nice long useage. Have them in the smoke detectors, clock. Flashlights ect....Good batteries at a fraction of the pice. Unless you need batteries for a smoke detector or something like that, get these."

    See all customer reviews

    Product Description

    They’re just batteries – until your remote control is dead. The Best Buy essentials BE-BAA8PK AA Batteries (8-Pack) deliver consistent power to a wide variety of compatible toys and electronics. This pack contains 8 alkaline AA batteries, ensuring you have enough to power your device. Safe and environmentally friendly, they are also mercury- and cadmium-free. They deliver a long-lasting and reliable charge with a 2,900 mAh capacity and 1.5 V of power, ensuring your toys, remote controls, cameras and other electronics are ready to go. Keep your favorite electronics powered with alkaline batteries backed by Best Buy.
    See all Alkaline Batteries
    See all Alkaline Batteries
  10. Energizer - Ultimate Lithium AA Batteries (8 Pack), Double A Batteries - Front_Zoom
    Top comment

    "Perfect for smoke detectors...These last a long time in our nest smoke detectors....Great battery...Had to buy for my nest smoke alarm which only takes this battery… Works great"

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    Product Description

    Nothing outlasts Energizer Ultimate Lithium AA Batteries. These household batteries are not only the world's longest lasting AA batteries, but they also feature leak resistant construction and superior performance in extreme temperatures ranging from -40 degrees F to 140 degrees F. Use these AA lithium batteries to power a variety of high tech and household items, whether you need smoke detector batteries, camera batteries, or double A batteries to power your child's favorite toys and games. Ultimate Lithium Energizer AA batteries weigh one-third less than standard alkaline batteries, and they hold power for up to 25 years in storage, letting you keep a ready supply available when you need them. 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

    "Perfect for smoke detectors...These last a long time in our nest smoke detectors....Great battery...Had to buy for my nest smoke alarm which only takes this battery… Works great"

    See all customer reviews

    Product Description

    Nothing outlasts Energizer Ultimate Lithium AA Batteries. These household batteries are not only the world's longest lasting AA batteries, but they also feature leak resistant construction and superior performance in extreme temperatures ranging from -40 degrees F to 140 degrees F. Use these AA lithium batteries to power a variety of high tech and household items, whether you need smoke detector batteries, camera batteries, or double A batteries to power your child's favorite toys and games. Ultimate Lithium Energizer AA batteries weigh one-third less than standard alkaline batteries, and they hold power for up to 25 years in storage, letting you keep a ready supply available when you need them. 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
    See all Lithium Batteries
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