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Most Efficient Batteries

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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. WORX - 20V Power Share 2.0Ah Battery - Front_Zoom

    Model: WA3669
    SKU: 6593261

    Product Description

    You can run your entire Worx Power Share collection of tools on this one 20V 2.0 Ah Max Lithium-Ion Battery. String trimmers and impact drivers, circular saws and lawnmowers, Hydroshots and leaf blowers, the list goes on and on. These batteries are lighter, which makes the tool lighter, and more efficient, than rechargeable batteries based on older designs. Max L-ion batteries don’t wane or drain, and won’t suffer from the memory effect that prevented last generation’s batteries from fully charging as they got older. Plus, they just last longer, so they’ll save you money. You can buy less of them because you can share each one between multiple tools. Cordless tools are much more cost-effective than gas, and you won’t have to worry about getting snagged on a cord. 40V Power Share tools run on this battery too, you just need two of them (20V + 20V = 40V). They provide gas-like power and performance without all the drawbacks of gasoline: no fumes, no mess, no paying at the pump. Depending on the task, and the tool, these batteries will have different runtimes, but a good rule of thumb is that one 20V 2.0 Ah battery will provide enough charge to power our Worx GT String Trimmer/Edger/Mini-Mower through an average 1/4 acre lawn. This battery is compatible with the following chargers (not included): WA3742, WA3868 quick charger, WA3875 dual-port charger, WA3878 quick dual-port charger.
    See all Power Equipment Batteries & Chargers

    Product Description

    You can run your entire Worx Power Share collection of tools on this one 20V 2.0 Ah Max Lithium-Ion Battery. String trimmers and impact drivers, circular saws and lawnmowers, Hydroshots and leaf blowers, the list goes on and on. These batteries are lighter, which makes the tool lighter, and more efficient, than rechargeable batteries based on older designs. Max L-ion batteries don’t wane or drain, and won’t suffer from the memory effect that prevented last generation’s batteries from fully charging as they got older. Plus, they just last longer, so they’ll save you money. You can buy less of them because you can share each one between multiple tools. Cordless tools are much more cost-effective than gas, and you won’t have to worry about getting snagged on a cord. 40V Power Share tools run on this battery too, you just need two of them (20V + 20V = 40V). They provide gas-like power and performance without all the drawbacks of gasoline: no fumes, no mess, no paying at the pump. Depending on the task, and the tool, these batteries will have different runtimes, but a good rule of thumb is that one 20V 2.0 Ah battery will provide enough charge to power our Worx GT String Trimmer/Edger/Mini-Mower through an average 1/4 acre lawn. This battery is compatible with the following chargers (not included): WA3742, WA3868 quick charger, WA3875 dual-port charger, WA3878 quick dual-port charger.
    See all Power Equipment Batteries & Chargers
    Your price for this item is $49.99
    Save $20
    The comparable value price is $69.99
    See all Power Equipment Batteries & Chargers
  2. Energizer - 2450 Lithium Coin Battery, 2 Pack - Front_Zoom
    Top comment

    "Batteries...It's a battery. Works just fine. 18 more characters....Energize battery 2450....Purchase batteries for car alarm. Last longer than Duracell batteries,"

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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

    "Batteries...It's a battery. Works just fine. 18 more characters....Energize battery 2450....Purchase batteries for car alarm. Last longer than Duracell batteries,"

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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
    Your price for this item is $9.99
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  3. Rayovac - High Energy AAA Batteries (4 Pack), Alkaline Triple A Batteries - Front_Zoom
    Top comment

    "Solid batteries...Very affordable. Very energy efficient. Dependable charge....[This review was collected as part of a promotion.] Batteries work great, seems to be efficient and durable. "

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    Product Description

    Power your household with Rayovac High Energy AAA Alkaline Batteries. Engineered for long-lasting performance, these Rayovac AAA batteries are ideal for the high use devices in your home, including flashlights, wireless mice, remotes and smart home devices. Rayovac rigorously tests its batteries to ensure they do what they say they'll do—plain and simple. These alkaline AAA batteries are backed by a 10 Year Power Guarantee to last up to 10 years in storage . Each AAA battery is made for dependable performance. For reliability in the devices you use each day, count on Rayovac triple A batteries.
    See all Alkaline Batteries
    Top comment

    "Solid batteries...Very affordable. Very energy efficient. Dependable charge....[This review was collected as part of a promotion.] Batteries work great, seems to be efficient and durable. "

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    Product Description

    Power your household with Rayovac High Energy AAA Alkaline Batteries. Engineered for long-lasting performance, these Rayovac AAA batteries are ideal for the high use devices in your home, including flashlights, wireless mice, remotes and smart home devices. Rayovac rigorously tests its batteries to ensure they do what they say they'll do—plain and simple. These alkaline AAA batteries are backed by a 10 Year Power Guarantee to last up to 10 years in storage . Each AAA battery is made for dependable performance. For reliability in the devices you use each day, count on Rayovac triple A batteries.
    See all Alkaline Batteries
    Your price for this item is $4.49
    See all Alkaline Batteries
  4. EcoFlow - DELTA Pro 3600Wh Extra Battery - Front_Zoom

    Model: DELTAProEB-US
    SKU: 6602943

    Product Description

    EcoFlow DELTA Pro Extra Battery-3600Wh-America-PTC EF ECOFLOW DELTA Pro Smart Extra Battery, 3600Wh Capacity, Expand DELTA Pro up to 10.8KWh, Fast Charging, Extra Battery for Home Backup, Emergency, RV, Off-Grid
    See all Solar Generators & Power Banks

    Product Description

    EcoFlow DELTA Pro Extra Battery-3600Wh-America-PTC EF ECOFLOW DELTA Pro Smart Extra Battery, 3600Wh Capacity, Expand DELTA Pro up to 10.8KWh, Fast Charging, Extra Battery for Home Backup, Emergency, RV, Off-Grid
    See all Solar Generators & Power Banks
    Your price for this item is $1,599.00
    Save $400
    The comparable value price is $1,999.00
    Deal ends in 5:19:49
    See all Solar Generators & Power Banks
  5. Panasonic - Rechargeable AAA Batteries (4-Pack) - Front_Zoom

    Model: HHR-4DPA/4B - PACK
    SKU: 5774906
    Top comment

    "Phone Battery...Perfect replacement batteries for Panasonic Phone....The batteries worked well and the delivery was efficient."

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    Product Description

    Power your DECT cordless handset with these Panasonic rechargeable AAA phone batteries. The Ni-MH cells have up to 750 mAh of capacity to provide long-lasting power for select Panasonic DECT 6.0 cordless phone models. Each set of Panasonic rechargeable AAA phone batteries comes in a pack of four to power two compatible handset units.
    See all Cordless Phone Batteries
    Top comment

    "Phone Battery...Perfect replacement batteries for Panasonic Phone....The batteries worked well and the delivery was efficient."

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    Product Description

    Power your DECT cordless handset with these Panasonic rechargeable AAA phone batteries. The Ni-MH cells have up to 750 mAh of capacity to provide long-lasting power for select Panasonic DECT 6.0 cordless phone models. Each set of Panasonic rechargeable AAA phone batteries comes in a pack of four to power two compatible handset units.
    See all Cordless Phone Batteries
    Your price for this item is $29.99
    See all Cordless Phone Batteries
  6. VTech - Nickel Metal Hydride Battery - Front_Zoom

    Model: BT283342
    SKU: 6219464
    Top comment

    "Efficient...Vtech phone battery...Batteries last a long time before needing recharging."

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    Product Description

    Power your cordless phone with this VTech battery. It fits more than two dozen models, so you can stock it for use in an office.
    See all Cordless Phone Batteries
    Top comment

    "Efficient...Vtech phone battery...Batteries last a long time before needing recharging."

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    Product Description

    Power your cordless phone with this VTech battery. It fits more than two dozen models, so you can stock it for use in an office.
    See all Cordless Phone Batteries
    Your price for this item is $8.99
    See all Cordless Phone Batteries
  7. VTech - Nickel Metal Hydride Battery - Front_Zoom

    Model: BT262342
    SKU: 6219462
    Top comment

    "Efficient, but expensive...The battery I purchased for my cordless home phone works well but it is expensive....Cordless Telephone Batteries...This battery was very reasonably price and available. I will purchase additional batteries before my other cordless telephone batteries need replacement."

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    Product Description

    Increase your cordless phone operation time with this rechargeable VTech battery. it plugs into the handset for use as a replacement or backup unit, fitting the compartment precisely for an easy swap, and it supplies 2.4V at 300 mAh for original equipment performance. This VTech battery uses environmentally friendly and low-memory NiMH technology.
    See all Cordless Phone Batteries
    Top comment

    "Efficient, but expensive...The battery I purchased for my cordless home phone works well but it is expensive....Cordless Telephone Batteries...This battery was very reasonably price and available. I will purchase additional batteries before my other cordless telephone batteries need replacement."

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    Product Description

    Increase your cordless phone operation time with this rechargeable VTech battery. it plugs into the handset for use as a replacement or backup unit, fitting the compartment precisely for an easy swap, and it supplies 2.4V at 300 mAh for original equipment performance. This VTech battery uses environmentally friendly and low-memory NiMH technology.
    See all Cordless Phone Batteries
    Your price for this item is $8.99
    See all Cordless Phone Batteries
  8. Panasonic - eneloop Charger and 4 AA Batteries Kit - White - Front_Zoom
    Top comment

    "Good and efficient...Products as described! Batteries are rechargeable and lasting with my Shure wireless microphones!...This unit charges batteries very fast and 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

    "Good and efficient...Products as described! Batteries are rechargeable and lasting with my Shure wireless microphones!...This unit charges batteries very fast and 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
    Your price for this item is $25.99
    See all Rechargeable Batteries
  9. Energizer - Ultimate Lithium AAA Batteries (4-Pack) - Front_Zoom
    Top comment

    "Lithium battery are the best....Nice light weight batteries. Long lasting batteries....Very efficient and productive batteries gives you the power you need"

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    Product Description

    World's longest lasting AAA batteries in high-tech devices. Up to 15 years of shelf life. Performs in extreme temperatures from -40° to 140°F.
    See all Lithium Batteries
    Top comment

    "Lithium battery are the best....Nice light weight batteries. Long lasting batteries....Very efficient and productive batteries gives you the power you need"

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    Product Description

    World's longest lasting AAA batteries in high-tech devices. Up to 15 years of shelf life. Performs in extreme temperatures from -40° to 140°F.
    See all Lithium Batteries
    Your price for this item is $14.99
    See all Lithium Batteries
  10. Energizer - N Batteries (2 Pack), 1.5V Alkaline Small Batteries - Front_Zoom
    Top comment

    "Energizer N Cell E-90 Batteries...Check out was quick and efficient....Efficient battery for lite."

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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 Alkaline Batteries
    Top comment

    "Energizer N Cell E-90 Batteries...Check out was quick and efficient....Efficient battery for lite."

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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 Alkaline Batteries
    Your price for this item is $6.99
    See all Alkaline Batteries
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