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

Batteries are the lifeblood of portable electronic devices. Without them, our devices would be useless hunks of plastic and metal. If you need to replace the batteries on your device and they require some of the smallest batteries available in the consumer market, maybe we can help. Browse the top-ranked list of some of the smallest batteries 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

    "Tiny Button Batteries...hard to find these small button batteries at a reasonable price...Energizer 377 silver oxide button battery...I never seen a battery so small so this good because I had my mini mirror for years and now I have battery that fit"

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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

    "Tiny Button Batteries...hard to find these small button batteries at a reasonable price...Energizer 377 silver oxide button battery...I never seen a battery so small so this good because I had my mini mirror for years and now I have battery that fit"

    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 - AAAA Batteries (2 Pack), Miniature Quadruple A Batteries - Front_Zoom
    Top comment

    "Batteries...Good, small batteries. Work as great as you could want a small battery to ever work....tiny batteries...Having recently purchased a Surface Pro with pen, I realized that I needed these little guys...who knew they came so small?? Performs as advertised"

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    Product Description

    Energizer AAAA Batteries provide dependable power to your important electronics. These mini batteries make long-lasting flashlight batteries, and they're compatible with a variety of devices, including wireless mice and TV remotes. Trust these AAAA alkaline batteries to reliably power your key fob and Connected Home security system. Miniature alkaline quadruple A 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

    "Batteries...Good, small batteries. Work as great as you could want a small battery to ever work....tiny batteries...Having recently purchased a Surface Pro with pen, I realized that I needed these little guys...who knew they came so small?? Performs as advertised"

    See all customer reviews

    Product Description

    Energizer AAAA Batteries provide dependable power to your important electronics. These mini batteries make long-lasting flashlight batteries, and they're compatible with a variety of devices, including wireless mice and TV remotes. Trust these AAAA alkaline batteries to reliably power your key fob and Connected Home security system. Miniature alkaline quadruple A 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 - 2032 Batteries (2 Pack), 3V Lithium Coin Batteries - Front_Zoom
    Top comment

    "I have to review this tiny battery?...I love this tiny battery. It works in my car key. :-)...Small round battery...Perfect for my small toys the take small Round batteries"

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    Product Description

    Energizer 2032 Lithium Coin Batteries provide reliable, long lasting power for your important devices. These lithium 2032 batteries perform in extreme temperatures ranging from -22 F to 140 F for dependable power, even in the toughest conditions. Reach for these Energizer batteries when you need key fob batteries, batteries for remotes, or glucose monitors and heart monitors. Energizer coin batteries are also an ideal power source for your keyless entry system, toys and games. Lasting up to 10 years in storage, these lithium batteries provide reliable power whenever you need them. Energizer packages its lithium coin batteries in child-resistant packaging, designed to help keep kids safe from ingesting them.
    See all Lithium Batteries
    Top comment

    "I have to review this tiny battery?...I love this tiny battery. It works in my car key. :-)...Small round battery...Perfect for my small toys the take small Round batteries"

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    Product Description

    Energizer 2032 Lithium Coin Batteries provide reliable, long lasting power for your important devices. These lithium 2032 batteries perform in extreme temperatures ranging from -22 F to 140 F for dependable power, even in the toughest conditions. Reach for these Energizer batteries when you need key fob batteries, batteries for remotes, or glucose monitors and heart monitors. Energizer coin batteries are also an ideal power source for your keyless entry system, toys and games. Lasting up to 10 years in storage, these lithium batteries provide reliable power whenever you need them. Energizer packages its lithium coin batteries in child-resistant packaging, designed to help keep kids safe from ingesting them.
    See all Lithium Batteries
    See all Lithium Batteries
  4. Energizer - A23 Batteries (2 Pack), Miniature Alkaline Small Batteries - Front_Zoom
    Top comment

    "Great Battery...One of the smallest batteries but also one of the best....Hey...They're batteries. What more can I say. Oh...there's a plus side and a minus side. "

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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

    "Great Battery...One of the smallest batteries but also one of the best....Hey...They're batteries. What more can I say. Oh...there's a plus side and a minus side. "

    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
  5. Energizer - 357/303 Batteries (3 Pack), Button Cell Batteries - Front_Zoom
    Top comment

    "Everything takes batteries even the smallest kids toy...Very useful tiny batteries....So many items use these little batteries I try to keep them in stock at all times."

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    Product Description

    Energizer 357/303 Batteries provide reliable, long lasting power to your important devices. Count on these button cell batteries to power your electronics, whether you need batteries for your kitchen scale, calculator or your keyless entry system. These Energizer batteries also provide dependable power for medical devices, like your glucose monitor or heart rate monitor. Each 357/303 battery holds power for up to 5 years in storage, letting you keep a ready supply of replacement batteries. Plus, these batteries contain no mercury, making them a more environmentally conscious choice. Count on Energizer specialty batteries to provide long lasting power when you need it most.
    See all Specialty Batteries
    Top comment

    "Everything takes batteries even the smallest kids toy...Very useful tiny batteries....So many items use these little batteries I try to keep them in stock at all times."

    See all customer reviews

    Product Description

    Energizer 357/303 Batteries provide reliable, long lasting power to your important devices. Count on these button cell batteries to power your electronics, whether you need batteries for your kitchen scale, calculator or your keyless entry system. These Energizer batteries also provide dependable power for medical devices, like your glucose monitor or heart rate monitor. Each 357/303 battery holds power for up to 5 years in storage, letting you keep a ready supply of replacement batteries. Plus, these batteries contain no mercury, making them a more environmentally conscious choice. Count on Energizer specialty batteries to provide long lasting power when you need it most.
    See all Specialty Batteries
    See all Specialty Batteries
  6. Canon - Rechargeable Lithium-Ion Battery for LP-E17 - Front_Zoom
    Top comment

    "The LP-E17 is a tiny battery. If you're using the EVF and LCD a lot while shooting, you'll need at least one extra battery. ...Charges canon battery likes it’s supoosed to, not much to it. Nice compact design where plug folds into the unit for storage and won’t be sticking out all the time. "

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    Product Description

    Keep your compatible Canon camera ready for use with this Canon LP-E17 9967B002 replacement battery, which features lithium-ion chemistry for reliable power.
    See all Camera Batteries
    Top comment

    "The LP-E17 is a tiny battery. If you're using the EVF and LCD a lot while shooting, you'll need at least one extra battery. ...Charges canon battery likes it’s supoosed to, not much to it. Nice compact design where plug folds into the unit for storage and won’t be sticking out all the time. "

    See all customer reviews

    Product Description

    Keep your compatible Canon camera ready for use with this Canon LP-E17 9967B002 replacement battery, which features lithium-ion chemistry for reliable power.
    See all Camera Batteries
    See all Camera Batteries
  7. Energizer - MAX AAA Batteries (10 Pack), Triple A Alkaline Batteries - Front_Zoom
    Top comment

    "Small, compact, and very convenient for traveling!...When don't batteries come in handy....Game controllers, camera, remote control, mini flashlights. Always good to have batteries."

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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 12 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

    "Small, compact, and very convenient for traveling!...When don't batteries come in handy....Game controllers, camera, remote control, mini flashlights. Always good to have batteries."

    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 12 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
    See all Alkaline Batteries
  8. APC - Back-UPS Pro 1050VA Tower UPS - Black - Front_Zoom
    Top comment

    "Powerful Backup Battery...This backup battery is compact, sleek and powerful. Its multiple ports make it perfect for office use with multiple devices plugged into it....Good for a Small Business!...Good Battery Back-up! It's great for a Small Business."

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    Product Description

    High Performance Computer and Electronics UPS for Premium Power Protection
    See all Battery Backup (UPS)
    Top comment

    "Powerful Backup Battery...This backup battery is compact, sleek and powerful. Its multiple ports make it perfect for office use with multiple devices plugged into it....Good for a Small Business!...Good Battery Back-up! It's great for a Small Business."

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    Product Description

    High Performance Computer and Electronics UPS for Premium Power Protection
    See all Battery Backup (UPS)
    See all Battery Backup (UPS)
  9. Greenworks - 80 Volt 2Ah Battery (Charger not included) - Front_Zoom
    Top comment

    "Works just like it's supposed to. I have a small yard and I get two mowings with this battery. ...I have a tiny 50x100 property. So, you can imagine how small the areas containing grass must be. "

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    Product Description

    The Greenworks 80V 2.0 Ah battery is compatible with over 75 Greenworks 80V tools. Compact and lightweight, it delivers constant, fade-free power with no memory loss after charging, and no dangerous emissions, smells, hassles, or maintenance. Features an onboard battery charge indicator for on-demand view of battery power status.
    See all Power Tool Batteries and Chargers
    Top comment

    "Works just like it's supposed to. I have a small yard and I get two mowings with this battery. ...I have a tiny 50x100 property. So, you can imagine how small the areas containing grass must be. "

    See all customer reviews

    Product Description

    The Greenworks 80V 2.0 Ah battery is compatible with over 75 Greenworks 80V tools. Compact and lightweight, it delivers constant, fade-free power with no memory loss after charging, and no dangerous emissions, smells, hassles, or maintenance. Features an onboard battery charge indicator for on-demand view of battery power status.
    See all Power Tool Batteries and Chargers
    See all Power Tool Batteries and Chargers
  10. Energizer - Battery Charger, AAA and Rechargeable AA Batteries Charger - Front_Zoom
    Top comment

    "Nice rechargeable battery pack...Great batteries and charger. Provides good battery life. ...Simple to use and compact. Does a great job charging batteries."

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    Product Description

    Energizer Recharge Basic Battery Charger is the smart choice for saving money and batteries. Designed for convenience and versatility, this charger for batteries charges either 2 or 4 rechargeable AA batteries or AAA rechargeable batteries. This charging stand features 4 slots, and LED indicator so you can easily track charging progress. The auto shutoff feature helps prevent overcharging. Its compact design makes this batteries charger easy to store when not in use. It fully charges AA and AAA batteries in 12 hours. This Energizer battery charger also comes with 2 rechargeable AA Energizer batteries and a USB cord for charging. Get reliable power with Energizer, the world’s #1 rechargeable brand based on scan scales.
    See all Rechargeable Batteries
    Top comment

    "Nice rechargeable battery pack...Great batteries and charger. Provides good battery life. ...Simple to use and compact. Does a great job charging batteries."

    See all customer reviews

    Product Description

    Energizer Recharge Basic Battery Charger is the smart choice for saving money and batteries. Designed for convenience and versatility, this charger for batteries charges either 2 or 4 rechargeable AA batteries or AAA rechargeable batteries. This charging stand features 4 slots, and LED indicator so you can easily track charging progress. The auto shutoff feature helps prevent overcharging. Its compact design makes this batteries charger easy to store when not in use. It fully charges AA and AAA batteries in 12 hours. This Energizer battery charger also comes with 2 rechargeable AA Energizer batteries and a USB cord for charging. Get reliable power with Energizer, the world’s #1 rechargeable brand based on scan scales.
    See all Rechargeable Batteries
    See all Rechargeable Batteries
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