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

Whether you're a photographer on the go, a camper who wants to keep your power supply going, or just someone who likes to have some emergency juice on hand, you'll want to get batteries that are reliable. Browse the top-ranked list of most efficient batteries below along with associated reviews and opinions.

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  1. BlackWolf - Wush Powered Ear Cleaner - Black - Front_Zoom
    Top comment

    "This product is excellent for cleaning of ear wax in a efficient and effective manner. The water stream is excellent in pressures which is fully adjustable in three settings. ...Runs out of water quickly. Charge for battery lasts a very long time. tip is simple to clean."

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    Product Description

    Wush is the new, safe, and effective way to remove earwax. With the press of a button, Wush generates a massaging triple jet stream of water that gently removes wax build-up and flushes it away.
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    Top comment

    "This product is excellent for cleaning of ear wax in a efficient and effective manner. The water stream is excellent in pressures which is fully adjustable in three settings. ...Runs out of water quickly. Charge for battery lasts a very long time. tip is simple to clean."

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    Product Description

    Wush is the new, safe, and effective way to remove earwax. With the press of a button, Wush generates a massaging triple jet stream of water that gently removes wax build-up and flushes it away.
    See all Hearing Aid Accessories
    Your price for this item is $69.99
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  2. Greenworks - 80 Volt 2Ah Battery (Charger not included) - Front_Zoom
    Top comment

    "The Better Battery...These batteries seem to last a pretty long time and I'm impressed with how fast they charge and hold the charge....Awesome battery...Great battery for those who need battery life for those big yards !"

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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

    "The Better Battery...These batteries seem to last a pretty long time and I'm impressed with how fast they charge and hold the charge....Awesome battery...Great battery for those who need battery life for those big yards !"

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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
    Your price for this item is $149.99
    See all Power Tool Batteries and Chargers
  3. Digipower - Re-Fuel Rechargeable Lithium-Ion Replacement Battery for Olympus LI-40B - Front_Zoom
    Top comment

    "Good replacement battery....Needed to get a battery quickly because we were leaving for a trip and discovered our existing battery wasn't holding a charge....New Battery for my Digital Camera...It holds a much better charge than the used batteries I have."

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    Product Description

    Ensure your Olympus digital camera is ready for the next photo opportunity with this DigiPower RF-OL40 battery, which features a rechargeable design with a 670 mAh capacity to provide ample power. Overload protection safeguards your device.
    See all Camera Batteries
    Top comment

    "Good replacement battery....Needed to get a battery quickly because we were leaving for a trip and discovered our existing battery wasn't holding a charge....New Battery for my Digital Camera...It holds a much better charge than the used batteries I have."

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    Product Description

    Ensure your Olympus digital camera is ready for the next photo opportunity with this DigiPower RF-OL40 battery, which features a rechargeable design with a 670 mAh capacity to provide ample power. Overload protection safeguards your device.
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    Your price for this item is $20.99
    Clearance
    The regular price is $39.99
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  4. Panasonic - eneloop Quick Individual Battery Charger and 4 AA Batteries Kit - White - Front_Zoom
    Top comment

    "Great. Charge fast, have a long battery life, cant ask for better rechargeables...Great battery charging set...Love this set. Batteries won't lose a max charge for a while and are helping me to reduce my battery consumption."

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    Product Description

    Charge your AA or AAA batteries within three hours with this Panasonic Advanced battery charger. Bright LED lights let you know the remaining charge on your batteries, and the device lights up green when the batteries reach 80 percent. This Panasonic Advanced battery charger includes an automatic shut off to prevent overcharging.
    See all Rechargeable Batteries
    Top comment

    "Great. Charge fast, have a long battery life, cant ask for better rechargeables...Great battery charging set...Love this set. Batteries won't lose a max charge for a while and are helping me to reduce my battery consumption."

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    Product Description

    Charge your AA or AAA batteries within three hours with this Panasonic Advanced battery charger. Bright LED lights let you know the remaining charge on your batteries, and the device lights up green when the batteries reach 80 percent. This Panasonic Advanced battery charger includes an automatic shut off to prevent overcharging.
    See all Rechargeable Batteries
    Your price for this item is $36.99
    The previous price was $39.99
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  5. Battery for Parrot Anafi - Front_Zoom

    Model: 50869BBR
    SKU: 6269227
    Top comment

    "Parrot Battery...Great battery! Easy to charge and use. Thanks Best Buy!...Top quality, really long life for a drone battery!...For anyone squawking about $100 drone batteries, know the computer circuitry built into it melds perfectly with the drone and remote to provide excellent performance and battery life combined."

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    Product Description

    Use this Parrot smart battery to keep your Parrot Anafi drone flying for up to 25 minutes at a time. It's easy to recharge via USB-C.
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    Top comment

    "Parrot Battery...Great battery! Easy to charge and use. Thanks Best Buy!...Top quality, really long life for a drone battery!...For anyone squawking about $100 drone batteries, know the computer circuitry built into it melds perfectly with the drone and remote to provide excellent performance and battery life combined."

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    Product Description

    Use this Parrot smart battery to keep your Parrot Anafi drone flying for up to 25 minutes at a time. It's easy to recharge via USB-C.
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    Your price for this item is $84.99
    Clearance
    The regular price is $99.99
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  6. Panasonic - eneloop Charger and 4 AA Batteries Kit - White - Front_Zoom
    Top comment

    "Great battery life...When the rechargeable batteries from my two-way radios stopped holding a charge I came across this brand through a lot of great reviews. ...Affordable batteries and good for environment...These last quite awhile with each charge. They dont leak or go bad. The charger is efficient."

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    Product Description

    Charge 4 AA or 4 AAA batteries easily with this Panasonic eneloop K-KJ17MCA4BA battery charger, which features an LED display with 4 indicator lights to let you monitor the status of each battery. Four included eneloop AA batteries offer immediate use.
    See all Rechargeable Batteries
    Top comment

    "Great battery life...When the rechargeable batteries from my two-way radios stopped holding a charge I came across this brand through a lot of great reviews. ...Affordable batteries and good for environment...These last quite awhile with each charge. They dont leak or go bad. The charger is efficient."

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    Product Description

    Charge 4 AA or 4 AAA batteries easily with this Panasonic eneloop K-KJ17MCA4BA battery charger, which features an LED display with 4 indicator lights to let you monitor the status of each battery. Four included eneloop AA batteries offer immediate use.
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    Your price for this item is $25.99
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  7. Energizer Battery Charger, AAA and Rechargeable AA Batteries Charger - Front_Zoom
    Top comment

    "I will never buy any battery but rechargeable. Works and the battery life is outstanding. ...Nice rechargeable battery pack...Great batteries and charger. Provides good battery life. "

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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.
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    Top comment

    "I will never buy any battery but rechargeable. Works and the battery life is outstanding. ...Nice rechargeable battery pack...Great batteries and charger. Provides good battery life. "

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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
    Your price for this item is $12.99
    See all Rechargeable Batteries
  8. Digipower - Re-Fuel Rechargeable Lithium-Ion Replacement Battery for Sony NP-FV50 - Front_Zoom
    Top comment

    "Battery life is not as long as the factory batteries but for the cost it's OK...Long battery life...This replacement battery really seems to last a long time from every charge. "

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    Product Description

    With 7.4V of power and a rechargeable design, this DigiPower RF-SNV50N lithium-ion battery replaces your NP-FV50 battery to keep your compatible Sony camcorder ready for use.
    See all Action Camera Batteries & Chargers
    Top comment

    "Battery life is not as long as the factory batteries but for the cost it's OK...Long battery life...This replacement battery really seems to last a long time from every charge. "

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    Product Description

    With 7.4V of power and a rechargeable design, this DigiPower RF-SNV50N lithium-ion battery replaces your NP-FV50 battery to keep your compatible Sony camcorder ready for use.
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    Your price for this item is $39.99
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  9. Energizer CR2 Lithium Batteries (2 Pack), 3V Photo Batteries - Front_Zoom
    Top comment

    "very good battery...purchased the batteries for my laser range finder. great battery life....great batteries...The battery life so far has been good."

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    Product Description

    Never miss capturing a moment: Energizer CR2 Photo Batteries deliver precise, long-lasting performance to your digital SLR camera and photo equipment. But it doesn’t stop at photos: These lithium batteries can also power up high-tech devices like your calculator, tablet PC, and more. With a storage life of up to 10 years, you can be sure they’ll stay fresh until you need them. They’re the perfect batteries for a picture-perfect life.
    See all Lithium Batteries
    Top comment

    "very good battery...purchased the batteries for my laser range finder. great battery life....great batteries...The battery life so far has been good."

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    Product Description

    Never miss capturing a moment: Energizer CR2 Photo Batteries deliver precise, long-lasting performance to your digital SLR camera and photo equipment. But it doesn’t stop at photos: These lithium batteries can also power up high-tech devices like your calculator, tablet PC, and more. With a storage life of up to 10 years, you can be sure they’ll stay fresh until you need them. They’re the perfect batteries for a picture-perfect life.
    See all Lithium Batteries
    Your price for this item is $17.99
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  10. Google - Geek Squad Certified Refurbished Nest Cam Indoor/Outdoor Wire Free Security Camera - Snow - Front_Zoom
    Top comment

    "., so all of these things on a single app is beneficial and more efficient. This camera are sharp, the cloud device is great, and it integrates perfectly into my existing Google Home products. ...Saved money on buying one refurbished. At first the battery wouldn't charge but I found I wasn't placing the plug correctly. "

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    Product Description

    Who’s in the garden? Are the kids doing their homework yet? Nest Cam is wire-free, so it goes almost anywhere, outside or in. It knows the difference between people, animals, and vehicles, so you can get the alerts that are important to you. Listen and speak through the camera right from the Google Home app. Check in anytime with 24/7 live view.* If you miss a notification, you can always go back and see what happened with 3 hours of free event video history.* And it’s easy to install yourself – no outlet or wires required. *** Stand and cable sold separately

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    Top comment

    "., so all of these things on a single app is beneficial and more efficient. This camera are sharp, the cloud device is great, and it integrates perfectly into my existing Google Home products. ...Saved money on buying one refurbished. At first the battery wouldn't charge but I found I wasn't placing the plug correctly. "

    See all customer reviews

    Product Description

    Who’s in the garden? Are the kids doing their homework yet? Nest Cam is wire-free, so it goes almost anywhere, outside or in. It knows the difference between people, animals, and vehicles, so you can get the alerts that are important to you. Listen and speak through the camera right from the Google Home app. Check in anytime with 24/7 live view.* If you miss a notification, you can always go back and see what happened with 3 hours of free event video history.* And it’s easy to install yourself – no outlet or wires required. *** Stand and cable sold separately

    See all Security Camera & System Accessories
    Your price for this item is $129.99
    The previous price was $179.99
    See all Security Camera & System Accessories
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