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Best Buy customers often prefer the following products when searching for small battery packs.

There are various reasons to get small battery packs. You need them to replace your current ones, or you're traveling or camping and need to have backup batteries for your key fob, headset or other gadgets. Whatever the case may be, having small battery packs with you can be a lifesaver. Browse the top-ranked list of small battery packs below along with associated reviews and opinions.

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  1. Energizer - 377 Batteries (2 Pack), Silver Oxide Button Cell Batteries - Front_Zoom
    Top comment

    "Good batteries for the watch. Came with 2 batteries in 1 pack. ...This works awesome Small but packs alot of power....Good batteries"

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    Product Description

    Energizer 377 Batteries provide reliable, long lasting power for your important devices. Small in size, but big on power, trust these button batteries when you need key fob batteries or calculator batteries. Keep your keyless entry system or health monitor powered with these small batteries, or use them to keep your child's favorite toys and games ready for fun. For best results, store these 1.5V button cell batteries in a cool, dry place until you're ready to use them. Each 377 battery lasts up to five years in storage, so you can keep a stock conveniently on hand and ready when you need it. Choose Energizer batteries to deliver long lasting power that you can rely on.
    See all Specialty Batteries
    Top comment

    "Good batteries for the watch. Came with 2 batteries in 1 pack. ...This works awesome Small but packs alot of power....Good batteries"

    See all customer reviews

    Product Description

    Energizer 377 Batteries provide reliable, long lasting power for your important devices. Small in size, but big on power, trust these button batteries when you need key fob batteries or calculator batteries. Keep your keyless entry system or health monitor powered with these small batteries, or use them to keep your child's favorite toys and games ready for fun. For best results, store these 1.5V button cell batteries in a cool, dry place until you're ready to use them. Each 377 battery lasts up to five years in storage, so you can keep a stock conveniently on hand and ready when you need it. Choose Energizer batteries to deliver long lasting power that you can rely on.
    See all Specialty Batteries
    See all Specialty Batteries
  2. Energizer - A23 Batteries (1 Pack), Miniature Alkaline Small Batteries - Front_Zoom
    Top comment

    "Best Buy was the only place I could find a 1 pack of this battery!...Energizer - A23 Battery...Energizer A23 12-Volt Alkaline Batteries (2-Pack) help keep your garage door opener, car alarm or car door opener powered and ready for use. "

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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

    "Best Buy was the only place I could find a 1 pack of this battery!...Energizer - A23 Battery...Energizer A23 12-Volt Alkaline Batteries (2-Pack) help keep your garage door opener, car alarm or car door opener powered and ready for use. "

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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
    See all Alkaline Batteries
  3. Energizer - A23 Batteries (2 Pack), Miniature Alkaline Small Batteries - Front_Zoom
    Top comment

    "Energizer batteries...Battery pack comes with 2 batteries. I used these on the remote control that operates my ceiling fan....Energizer - A23 Batteries (2 Pack), Miniature Alk...Energizer - A23 Batteries (2 Pack), Miniature Alkaline Small Batteries worked perfectly for my garage door opener."

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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 Specialty Batteries
    Top comment

    "Energizer batteries...Battery pack comes with 2 batteries. I used these on the remote control that operates my ceiling fan....Energizer - A23 Batteries (2 Pack), Miniature Alk...Energizer - A23 Batteries (2 Pack), Miniature Alkaline Small Batteries worked perfectly for my garage door opener."

    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 Specialty Batteries
    See all Specialty Batteries
  4. Energizer - Ultimate Lithium AAA Batteries (8 Pack), Triple A Batteries - Front_Zoom
    Top comment

    "Energizer - Ultimate Lithium AAA Batteries (8-Pack...Good batteries they work really good and last long....The Best batteries in my opinion. Energizer - Ultimate Lithium AAA Batteries (8-Pack)..............................................."

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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 25 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

    "Energizer - Ultimate Lithium AAA Batteries (8-Pack...Good batteries they work really good and last long....The Best batteries in my opinion. Energizer - Ultimate Lithium AAA Batteries (8-Pack)..............................................."

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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 25 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
    See all Lithium Batteries
  5. Energizer - N Batteries (2 Pack), 1.5V Alkaline Small Batteries - Front_Zoom
    Top comment

    "I really like that this Energizer - N Cell E90 Batteries (2-Pack) have long lasting battery that you can trust to last really long....Energizer N Alkaline Battery Retail Pack, 2-Pack...This value pack of batteries offers a full range of lasting power."

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    Product Description

    Energizer N Batteries deliver reliable power to your important electronics. These N batteries are great camera batteries, and they're compatible with a variety of other devices, including bluetooth headsets and video game controllers. Ideal for medical equipment, E90 batteries fit a variety of blood pressure monitors and glucose monitors. Energizer miniature alkaline batteries contain zero mercury to minimize environmental impact. Count on Energizer, the #1 brand of specialty batteries, to deliver dependable, long lasting power to your devices.
    See all Specialty Batteries
    Top comment

    "I really like that this Energizer - N Cell E90 Batteries (2-Pack) have long lasting battery that you can trust to last really long....Energizer N Alkaline Battery Retail Pack, 2-Pack...This value pack of batteries offers a full range of lasting power."

    See all customer reviews

    Product Description

    Energizer N Batteries deliver reliable power to your important electronics. These N batteries are great camera batteries, and they're compatible with a variety of other devices, including bluetooth headsets and video game controllers. Ideal for medical equipment, E90 batteries fit a variety of blood pressure monitors and glucose monitors. Energizer miniature alkaline batteries contain zero mercury to minimize environmental impact. Count on Energizer, the #1 brand of specialty batteries, to deliver dependable, long lasting power to your devices.
    See all Specialty Batteries
    See all Specialty Batteries
  6. Energizer - 377 Batteries (1 Pack), Silver Oxide Button Cell Batteries - Front_Zoom
    Top comment

    "Watch battery...Ok price for the pack. Needed for a watch. Worked immediately....Nice little Battery...The Energizer 377 Silver Oxide button battery was exactly what my small watch needed. It came in a package with one battery. "

    See all customer reviews

    Product Description

    Energizer 377 Batteries provide reliable, long lasting power for your important devices. Small in size, but big on power, trust these button batteries when you need key fob batteries or calculator batteries. Keep your keyless entry system or health monitor powered with these small batteries, or use them to keep your child's favorite toys and games ready for fun. For best results, store these 1.5V button cell batteries in a cool, dry place until you're ready to use them. Each 377 battery lasts up to five years in storage, so you can keep a stock conveniently on hand and ready when you need it. Choose Energizer batteries to deliver long lasting power that you can rely on.
    See all Specialty Batteries
    Top comment

    "Watch battery...Ok price for the pack. Needed for a watch. Worked immediately....Nice little Battery...The Energizer 377 Silver Oxide button battery was exactly what my small watch needed. It came in a package with one battery. "

    See all customer reviews

    Product Description

    Energizer 377 Batteries provide reliable, long lasting power for your important devices. Small in size, but big on power, trust these button batteries when you need key fob batteries or calculator batteries. Keep your keyless entry system or health monitor powered with these small batteries, or use them to keep your child's favorite toys and games ready for fun. For best results, store these 1.5V button cell batteries in a cool, dry place until you're ready to use them. Each 377 battery lasts up to five years in storage, so you can keep a stock conveniently on hand and ready when you need it. Choose Energizer batteries to deliver long lasting power that you can rely on.
    See all Specialty Batteries
    See all Specialty Batteries
  7. Energizer - 2450 Lithium Coin Battery, 2 Pack - Front_Zoom
    Top comment

    "2450 coin battery...energizer 2450 lithium coin battery 2 pack. they last longer than most coin batteries. good deal too....Energizer batteries...Good batteries. Last longer than other brands and great they come in a 2 pack."

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    Product Description

    Don’t let their small size fool you: This Energizer 2450 Lithium Coin 3-Volt Battery delivers big time on long-lasting, dependable power for your coin-battery-operated items. From heart rate or glucose monitors, to remotes, keyless entry systems, key fobs, watches, toys and games, and even more specialized devices, our CR2450 coin batteries are compatible with the devices that fit your life, so you can keep going. These reliable and durable Energizer Coin Lithium Batteries are able to withstand a wide range of temperatures (from -22º to 140º F) and can hold power in storage for up to eight years, giving you coin battery power you can depend on. Responsibly designed with zero mercury, it’s easy to see why Energizer Lithium CR2450 Coin Batteries are the right choice for your specialty devices.
    See all Household Batteries
    Top comment

    "2450 coin battery...energizer 2450 lithium coin battery 2 pack. they last longer than most coin batteries. good deal too....Energizer batteries...Good batteries. Last longer than other brands and great they come in a 2 pack."

    See all customer reviews

    Product Description

    Don’t let their small size fool you: This Energizer 2450 Lithium Coin 3-Volt Battery delivers big time on long-lasting, dependable power for your coin-battery-operated items. From heart rate or glucose monitors, to remotes, keyless entry systems, key fobs, watches, toys and games, and even more specialized devices, our CR2450 coin batteries are compatible with the devices that fit your life, so you can keep going. These reliable and durable Energizer Coin Lithium Batteries are able to withstand a wide range of temperatures (from -22º to 140º F) and can hold power in storage for up to eight years, giving you coin battery power you can depend on. Responsibly designed with zero mercury, it’s easy to see why Energizer Lithium CR2450 Coin Batteries are the right choice for your specialty devices.
    See all Household Batteries
    See all Household Batteries
  8. Energizer - 1616 Lithium Coin Battery, 1 Pack - Front_Zoom
    Top comment

    "Good battery...Long lasting battery. Easy to open pack. Would recommend....Powerful small batteries. Long lasting fresh batteries"

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    Product Description

    Don’t let their small size fool you: This Energizer 1616 Lithium Coin 3-Volt Battery delivers big time on long-lasting, dependable power for your coin-battery-operated items. From heart rate or glucose monitors, to remotes, keyless entry systems, key fobs, watches, toys and games, and even more specialized devices, our coin batteries are compatible with the devices that fit your life, so you can keep going. These reliable and durable Energizer Coin Lithium Batteries are able to withstand a wide range of temperatures (from -22º to 140º F) and can hold power in storage for up to eight years, giving you coin battery power you can depend on. Responsibly designed with zero mercury, it’s easy to see why Energizer Lithium Coin Batteries are the right choice for your specialty devices.
    See all Specialty Batteries
    Top comment

    "Good battery...Long lasting battery. Easy to open pack. Would recommend....Powerful small batteries. Long lasting fresh batteries"

    See all customer reviews

    Product Description

    Don’t let their small size fool you: This Energizer 1616 Lithium Coin 3-Volt Battery delivers big time on long-lasting, dependable power for your coin-battery-operated items. From heart rate or glucose monitors, to remotes, keyless entry systems, key fobs, watches, toys and games, and even more specialized devices, our coin batteries are compatible with the devices that fit your life, so you can keep going. These reliable and durable Energizer Coin Lithium Batteries are able to withstand a wide range of temperatures (from -22º to 140º F) and can hold power in storage for up to eight years, giving you coin battery power you can depend on. Responsibly designed with zero mercury, it’s easy to see why Energizer Lithium Coin Batteries are the right choice for your specialty devices.
    See all Specialty Batteries
    See all Specialty Batteries
  9. Energizer - 2450 Lithium Coin Battery, 1 Pack - Front_Zoom
    Top comment

    "Great Battery...Great battery. Has a nice duration/run time for a small battery....There were tons of available options on Amazon (2 pack, 6 pack, 100 pack!) some a lot cheaper than these. "

    See all customer reviews

    Product Description

    Don’t let their small size fool you: This Energizer 2450 Lithium Coin 3-Volt Battery delivers big time on long-lasting, dependable power for your coin-battery-operated items. From heart rate or glucose monitors, to remotes, keyless entry systems, key fobs, watches, toys and games, and even more specialized devices, our CR2450 coin batteries are compatible with the devices that fit your life, so you can keep going. These reliable and durable Energizer Coin Lithium Batteries are able to withstand a wide range of temperatures (from -22º to 140º F) and can hold power in storage for up to eight years, giving you coin battery power you can depend on. Responsibly designed with zero mercury, it’s easy to see why Energizer Lithium CR2450 Coin Batteries are the right choice for your specialty devices.
    See all Lithium Batteries
    Top comment

    "Great Battery...Great battery. Has a nice duration/run time for a small battery....There were tons of available options on Amazon (2 pack, 6 pack, 100 pack!) some a lot cheaper than these. "

    See all customer reviews

    Product Description

    Don’t let their small size fool you: This Energizer 2450 Lithium Coin 3-Volt Battery delivers big time on long-lasting, dependable power for your coin-battery-operated items. From heart rate or glucose monitors, to remotes, keyless entry systems, key fobs, watches, toys and games, and even more specialized devices, our CR2450 coin batteries are compatible with the devices that fit your life, so you can keep going. These reliable and durable Energizer Coin Lithium Batteries are able to withstand a wide range of temperatures (from -22º to 140º F) and can hold power in storage for up to eight years, giving you coin battery power you can depend on. Responsibly designed with zero mercury, it’s easy to see why Energizer Lithium CR2450 Coin Batteries are the right choice for your specialty devices.
    See all Lithium Batteries
    See all Lithium Batteries
  10. Energizer - 1632 Lithium Coin Battery, 1 Pack - Front_Zoom
    Top comment

    "Energizer 1632 Lithium Coin Battery, 1 Pack...Energizer 1632 Lithium Coin Battery, 1 Pack very good...Who knew such a small battery could pack suck a powerful punch !"

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    Product Description

    Don’t let their small size fool you: This Energizer 1632 Lithium Coin 3-Volt Battery delivers big time on long-lasting, dependable power for your coin-battery-operated items. From heart rate or glucose monitors, to remotes, keyless entry systems, key fobs, watches, toys and games, and even more specialized devices, our coin batteries are compatible with the devices that fit your life, so you can keep going. These reliable and durable Energizer Coin Lithium Batteries are able to withstand a wide range of temperatures (from -22º to 140º F) and can hold power in storage for up to eight years, giving you coin battery power you can depend on. Responsibly designed with zero mercury, it’s easy to see why Energizer Lithium Coin Batteries are the right choice for your specialty devices.
    See all Lithium Batteries
    Top comment

    "Energizer 1632 Lithium Coin Battery, 1 Pack...Energizer 1632 Lithium Coin Battery, 1 Pack very good...Who knew such a small battery could pack suck a powerful punch !"

    See all customer reviews

    Product Description

    Don’t let their small size fool you: This Energizer 1632 Lithium Coin 3-Volt Battery delivers big time on long-lasting, dependable power for your coin-battery-operated items. From heart rate or glucose monitors, to remotes, keyless entry systems, key fobs, watches, toys and games, and even more specialized devices, our coin batteries are compatible with the devices that fit your life, so you can keep going. These reliable and durable Energizer Coin Lithium Batteries are able to withstand a wide range of temperatures (from -22º to 140º F) and can hold power in storage for up to eight years, giving you coin battery power you can depend on. Responsibly designed with zero mercury, it’s easy to see why Energizer Lithium Coin Batteries are the right choice for your specialty devices.
    See all Lithium Batteries
    See all Lithium Batteries
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