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

The laptop battery is a key component of your laptop. It powers the laptop's basic functions, such as turning it on and keeping it running while it's asleep or in suspend mode. If you're looking for a replacement battery for your laptop, we've got you covered. Browse the top-ranked list of laptop batteries below along with associated reviews and opinions.

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  1. DENAQ - 6-Cell Lithium-Ion Battery for Select HP Laptops - Front_Zoom
    Top comment

    "Battery for HP Laptop...It wiil be good to replacethe current battery of my HP Laptop...Compatible Laptop Battery Charm....The Denaq-6 Cell Lithium-Ion Battery works like a charm with my HP laptop. I've had my computer laptop for about 3 years and I didn't know that I had replace my laptop's battery. "

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    Product Description

    Power your HP laptop with this DENAQ NM-MU06055-6 6-cell lithium-ion battery that provides 10.8V and features a 4400 mAh capacity to keep your device ready for use. Built-in protection helps prevent overcharging.
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    Top comment

    "Battery for HP Laptop...It wiil be good to replacethe current battery of my HP Laptop...Compatible Laptop Battery Charm....The Denaq-6 Cell Lithium-Ion Battery works like a charm with my HP laptop. I've had my computer laptop for about 3 years and I didn't know that I had replace my laptop's battery. "

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    Product Description

    Power your HP laptop with this DENAQ NM-MU06055-6 6-cell lithium-ion battery that provides 10.8V and features a 4400 mAh capacity to keep your device ready for use. Built-in protection helps prevent overcharging.
    See all Laptop Batteries
    See all Laptop Batteries
  2. DENAQ - 6-Cell Lithium-Ion Battery for Select HP ProBook Laptops - Front_Zoom
    Top comment

    "no review...It was not the right size so I didn't pick it up. So NO REVIEW."

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    Product Description

    Ensure reliable power with this DENAQ replacement laptop battery for HP devices. The 4400 mAh capacity is enough for long work sessions without an outlet, and it has a LiIon cell.
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    Top comment

    "no review...It was not the right size so I didn't pick it up. So NO REVIEW."

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    Product Description

    Ensure reliable power with this DENAQ replacement laptop battery for HP devices. The 4400 mAh capacity is enough for long work sessions without an outlet, and it has a LiIon cell.
    See all Laptop Batteries
    See all Laptop Batteries
  3. DENAQ - Lithium-Ion Battery for Select Dell Laptops - Front_Zoom
    Top comment

    "Good quality battery...Buying a laptop battery online from other sites is usually a gamble. ...Great battery...Immediately as I received the DENAQ - Lithium-Ion Battery for my laptop I installed it and it worked great. "

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    Product Description

    Continue to power your compatible Dell laptop with this DENAQ NM-T54FJ lithium-ion battery, which features a rechargeable design with overload protection to promote safe use. A capacity of 4400 mAh and 11.1V of power deliver a sustained charge.
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    Top comment

    "Good quality battery...Buying a laptop battery online from other sites is usually a gamble. ...Great battery...Immediately as I received the DENAQ - Lithium-Ion Battery for my laptop I installed it and it worked great. "

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    Product Description

    Continue to power your compatible Dell laptop with this DENAQ NM-T54FJ lithium-ion battery, which features a rechargeable design with overload protection to promote safe use. A capacity of 4400 mAh and 11.1V of power deliver a sustained charge.
    See all Laptop Batteries
    See all Laptop Batteries
  4. DENAQ - 6-Cell Lithium-Ion Battery for HP Envy dv4 and dv6 Laptops - Front_Zoom
    Top comment

    "Laptop Battery...I great price fir a great battery for my HP laptop...Nice battery for the price...The battery is a good non hp replacement for ho laptops. "

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    Product Description

    Lengthen the time you can use your HP laptop with this DENAQ replacement battery. It's compatible with several computer models for use with multiple devices.
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    Top comment

    "Laptop Battery...I great price fir a great battery for my HP laptop...Nice battery for the price...The battery is a good non hp replacement for ho laptops. "

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    Product Description

    Lengthen the time you can use your HP laptop with this DENAQ replacement battery. It's compatible with several computer models for use with multiple devices.
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    See all Laptop Batteries
  5. DENAQ - Lithium-Ion Battery for Select Toshiba Laptops - Front_Zoom
    Top comment

    "Great New Replacement for 5 yr old+ Laptop...I started searching for a replacement battery for my Toshiba laptop. I was concerned because I heard Toshiba laptops are no longer being manufactured and was hoping they still had batteries available. ...Needed a battery for my Toshiba laptop...I went online to Best Buy site to find A Toshiba battery clicked on chat for Assistance a nice person looked my info up picked the right battery that would work Thanks Best Buy!!!!"

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    Product Description

    Power your compatible Toshiba laptop with this DENAQ NM-PA5024U-6 lithium-ion battery, which features 10.8V of power for reliable recharging. Overload protection promotes safe use.
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    Top comment

    "Great New Replacement for 5 yr old+ Laptop...I started searching for a replacement battery for my Toshiba laptop. I was concerned because I heard Toshiba laptops are no longer being manufactured and was hoping they still had batteries available. ...Needed a battery for my Toshiba laptop...I went online to Best Buy site to find A Toshiba battery clicked on chat for Assistance a nice person looked my info up picked the right battery that would work Thanks Best Buy!!!!"

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    Product Description

    Power your compatible Toshiba laptop with this DENAQ NM-PA5024U-6 lithium-ion battery, which features 10.8V of power for reliable recharging. Overload protection promotes safe use.
    See all Laptop Batteries
    See all Laptop Batteries
  6. DENAQ - Lithium-Ion Battery for Select Dell Laptops - Front_Zoom
    Top comment

    "Fits older laptops...The laptop was abput 15 years old and hard to find a battery pack for. ...great battery...This battery is an excellent replacement battery for my laptop"

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    Product Description

    Fuel your compatible Dell laptop with this DENAQ NM-MR90Y lithium-ion battery, which features 11.1V of power and a 5200 mAh capacity for a sustained charge. Overload protection promotes safe use.
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    Top comment

    "Fits older laptops...The laptop was abput 15 years old and hard to find a battery pack for. ...great battery...This battery is an excellent replacement battery for my laptop"

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    Product Description

    Fuel your compatible Dell laptop with this DENAQ NM-MR90Y lithium-ion battery, which features 11.1V of power and a 5200 mAh capacity for a sustained charge. Overload protection promotes safe use.
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    See all Laptop Batteries
  7. DENAQ - Lithium-Polymer Battery for Apple® MacBook Air® 13.3" Laptops - Front_Zoom
    Top comment

    "Fifteen minutes to install and my 2011 laptop is back to six hour battery life....Comes with all screwdrivers to change out battery. If you can plug your laptop into a charger you can change the battery out."

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    Product Description

    Refresh your 13.3-inch 2010 Apple MacBook Air with this Denaq replacement battery. The 6800 mAh power supply delivers hours of reliable use when you aren't near an outlet, while the slim design matches OEM batteries for a seamless fit. This Denaq replacement battery boasts lithium-polymer chemistry for a dependable source of power.
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    Top comment

    "Fifteen minutes to install and my 2011 laptop is back to six hour battery life....Comes with all screwdrivers to change out battery. If you can plug your laptop into a charger you can change the battery out."

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    Product Description

    Refresh your 13.3-inch 2010 Apple MacBook Air with this Denaq replacement battery. The 6800 mAh power supply delivers hours of reliable use when you aren't near an outlet, while the slim design matches OEM batteries for a seamless fit. This Denaq replacement battery boasts lithium-polymer chemistry for a dependable source of power.
    See all Laptop Batteries
    See all Laptop Batteries
  8. BTI - 6-Cell Lithium-Ion Battery for HP ProBook 640 G1 and 645 G1 Laptops - Front_Zoom
    Top comment

    "The employees were really helpful when I was ordering this laptop battery. It’s exactly what I needed...Replacement battery...Had a HP 640 g1 laptop and the battery stopped working. Purchased this new one and it is holding a charge and working great."

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    Product Description

    Keep this BTI laptop battery on hand as a spare during power outages. The 5200 mAh capacity provides plenty of time to finish up projects or check emails and social media, and the 10.8 volts keep your computer running on consistent power. This BTI laptop battery uses lithium-ion technology for reliability.
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    Top comment

    "The employees were really helpful when I was ordering this laptop battery. It’s exactly what I needed...Replacement battery...Had a HP 640 g1 laptop and the battery stopped working. Purchased this new one and it is holding a charge and working great."

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    Product Description

    Keep this BTI laptop battery on hand as a spare during power outages. The 5200 mAh capacity provides plenty of time to finish up projects or check emails and social media, and the 10.8 volts keep your computer running on consistent power. This BTI laptop battery uses lithium-ion technology for reliability.
    See all Laptop Batteries
    See all Laptop Batteries
  9. DENAQ - 4-Cell Lithium-Ion Battery for Acer Aspire V5 Laptops - Front_Zoom
    Top comment

    "I've had a couple of items that needed replacement parts but had trouble finding them or they cost more than the item was worth at the time, so that's the main reason for this purchase was to have it on hand should I need to replace the current battery. The second reason was the price"

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    Product Description

    Ensure your Acer laptop has enough juice with this DENAQ LiIon battery. Its four cells deliver 2200 mAh of power, so you can get work done.
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    Top comment

    "I've had a couple of items that needed replacement parts but had trouble finding them or they cost more than the item was worth at the time, so that's the main reason for this purchase was to have it on hand should I need to replace the current battery. The second reason was the price"

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    Product Description

    Ensure your Acer laptop has enough juice with this DENAQ LiIon battery. Its four cells deliver 2200 mAh of power, so you can get work done.
    See all Laptop Batteries
    See all Laptop Batteries
  10. DENAQ - Lithium-Ion Battery for Apple MacBook Pro with Retina display Laptops - Front_Zoom
    Top comment

    "My first time replacing this battery....This is the first time I’ve replaced my MacBook battery. Don’t be like me. -make sure you have some type of product to remove the adhesive from the old battery that you’re replacing."

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    Product Description

    Keep your laptop in optimal working condition with this rechargeable Denaq replacement battery. The 8400 mAh capacity delivered at 11.26V provides a reliable power supply, and the 16-oz. weight helps keep your device light and portable. This Denaq replacement battery is compatible with Apple MacBook Pro laptops for a precise fit.
    See all Laptop Batteries
    Top comment

    "My first time replacing this battery....This is the first time I’ve replaced my MacBook battery. Don’t be like me. -make sure you have some type of product to remove the adhesive from the old battery that you’re replacing."

    See all customer reviews

    Product Description

    Keep your laptop in optimal working condition with this rechargeable Denaq replacement battery. The 8400 mAh capacity delivered at 11.26V provides a reliable power supply, and the 16-oz. weight helps keep your device light and portable. This Denaq replacement battery is compatible with Apple MacBook Pro laptops for a precise fit.
    See all Laptop Batteries
    See all Laptop Batteries
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