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Best Buy customers often prefer the following products when searching for best external battery.

External batteries are a great way to keep your devices charged when you're away from an outlet. They're useful for travel because they can fit in your bag or luggage. Browse the top-ranked list of best external batteries below along with associated reviews and opinions.

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  1. Energizer - MAX 5,000 mAh Ultra-Slim, 3-Port USB-C High Speed Universal Portable Charger Power bank, Charges Three Devices at Once - Black - Front_Zoom
    Top comment

    "My power bank...Power Bank"

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    Product Description

    Charge your mobile devices with this Energizer power bank. The Energizer UE5010 is the perfect ultra-slim power bank for smartphones, tablets, and more. The UE5010 provides 5,000 mAh capacity to charge smartphones, tablets, smartwatches, headphones, earbuds, and more. The 5,000mAh battery provides up to 18 hours of power, while three outputs - two USB 2.1 Type-A ports and one USB-C port - consistently and efficiently deliver power to up to three devices at 10.5W. Four white LED indicator lights signify the charging status and current battery life. The textured diagonal pattern design prevents slippage, scratches, and fingerprints on the surface. The lightweight and ultra-slim design fits perfectly in your pocket wherever you go! Energizer PowerSafe Management guarantees protection against short circuit, overcurrent, overcharge, and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank or charging other devices.
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    Top comment

    "My power bank...Power Bank"

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    Product Description

    Charge your mobile devices with this Energizer power bank. The Energizer UE5010 is the perfect ultra-slim power bank for smartphones, tablets, and more. The UE5010 provides 5,000 mAh capacity to charge smartphones, tablets, smartwatches, headphones, earbuds, and more. The 5,000mAh battery provides up to 18 hours of power, while three outputs - two USB 2.1 Type-A ports and one USB-C port - consistently and efficiently deliver power to up to three devices at 10.5W. Four white LED indicator lights signify the charging status and current battery life. The textured diagonal pattern design prevents slippage, scratches, and fingerprints on the surface. The lightweight and ultra-slim design fits perfectly in your pocket wherever you go! Energizer PowerSafe Management guarantees protection against short circuit, overcurrent, overcharge, and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank or charging other devices.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  2. myCharge - AMP PRONG MAX 20,000mAh Everything Built-In Portable Charge for Most USB Enables Devices - Black - Front_Zoom
    Top comment

    "Nice power bank...The power bank has worked nicely in this first month....Durable power bank...I highly recommended this power bank yes"

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    Product Description

    Keep your mobile devices powered on the go with the myCharge AMP PRONG 20K portable power pack. The 20000mAh capacity powers up to two devices simultaneously. The myCharge AMP PRONG 20K portable power pack has USB-C port and a built-in USB-C cable that deliver up to 12W of output for rapid charging. The device has built-in wall prongs for rapid recharging of the powerbank
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    Top comment

    "Nice power bank...The power bank has worked nicely in this first month....Durable power bank...I highly recommended this power bank yes"

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    Product Description

    Keep your mobile devices powered on the go with the myCharge AMP PRONG 20K portable power pack. The 20000mAh capacity powers up to two devices simultaneously. The myCharge AMP PRONG 20K portable power pack has USB-C port and a built-in USB-C cable that deliver up to 12W of output for rapid charging. The device has built-in wall prongs for rapid recharging of the powerbank
    See all Power Adapters
    See all Power Adapters
  3. myCharge - AMP PRONG PLUS 10,000mAh Everything Built-In Portable Charge for Most USB-C Enables Devices - Blue - Front_Zoom
    Top comment

    "[This review was collected as part of a promotion.] This power bank has been extremely useful. It is small enough to fit easily in my purse or even pocket. ...My use case is to charge my power bank every night and use that to charge my phone during the day so if I lose or forget something it will be the power bank and not the phone. "

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    Product Description

    Keep your mobile devices powered on the go with the myCharge AMP PRONG 10K portable power pack. The 10000mAh capacity powers up to two devices simultaneously. The myCharge AMP PRONG 10K portable power pack has USB-C port and a built-in USB-C cable that deliver up to 12W of output for rapid charging. The device has built-in wall prongs for rapid recharging of the powerbank
    See all Power Adapters
    Top comment

    "[This review was collected as part of a promotion.] This power bank has been extremely useful. It is small enough to fit easily in my purse or even pocket. ...My use case is to charge my power bank every night and use that to charge my phone during the day so if I lose or forget something it will be the power bank and not the phone. "

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    Product Description

    Keep your mobile devices powered on the go with the myCharge AMP PRONG 10K portable power pack. The 10000mAh capacity powers up to two devices simultaneously. The myCharge AMP PRONG 10K portable power pack has USB-C port and a built-in USB-C cable that deliver up to 12W of output for rapid charging. The device has built-in wall prongs for rapid recharging of the powerbank
    See all Power Adapters
    See all Power Adapters
  4. Energizer - Ultimate Lithium 20,000mAh 20W Qi Wireless Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android, USB Devices - Black - Angle_Zoom
    Top comment

    "Energizer Wireless Power Bank...Great service and prices as always from Best Buy. the Energizer power bank is working great and very small....good power bank for price...Nice power bank. Wireless works well. Got a discount with bestbuy rewards."

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    Product Description

    Charge your mobile devices with this Energizer power bank. This portable charger is a wireless Qi certified power bank that provides 20,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more. The Qi wireless fast charge supports up to 7.5W for Apple, and 10W output for Samsung, Google Pixel, and other compatible devices. The 20,000mAh battery provides up to 72 hours of power while the three outputs and 18W QC 3.0, Qi, and 20W PD 3.0 technology deliver power consistently and efficiently to up to three devices at once. This power bank includes one 18W Qualcomm Quick Charge 3.0 USB-A and one 20W Power Delivery 3.0 USB-C. The USB-C Power Delivery 3.0 technology allows you to fast charge certain iPhones from 0 to 50% in only 30 minutes with 20W of power. The Qualcomm Quick Charge 3.0 USB-A output supports fast charging for Samsung, Huawei, and other compatible Android devices allowing you to charge your compatible phone from 0-80% in only 30 minutes with 18W of power. Four white LED indicator lights signify the charging status and current battery life. The lightweight and ultra slim design fits perfectly in your pocket wherever you go! Energizer PowerSafe Management guarantees against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank or charging other devices.
    See all Portable Chargers & Power Banks
    Top comment

    "Energizer Wireless Power Bank...Great service and prices as always from Best Buy. the Energizer power bank is working great and very small....good power bank for price...Nice power bank. Wireless works well. Got a discount with bestbuy rewards."

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    Product Description

    Charge your mobile devices with this Energizer power bank. This portable charger is a wireless Qi certified power bank that provides 20,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more. The Qi wireless fast charge supports up to 7.5W for Apple, and 10W output for Samsung, Google Pixel, and other compatible devices. The 20,000mAh battery provides up to 72 hours of power while the three outputs and 18W QC 3.0, Qi, and 20W PD 3.0 technology deliver power consistently and efficiently to up to three devices at once. This power bank includes one 18W Qualcomm Quick Charge 3.0 USB-A and one 20W Power Delivery 3.0 USB-C. The USB-C Power Delivery 3.0 technology allows you to fast charge certain iPhones from 0 to 50% in only 30 minutes with 20W of power. The Qualcomm Quick Charge 3.0 USB-A output supports fast charging for Samsung, Huawei, and other compatible Android devices allowing you to charge your compatible phone from 0-80% in only 30 minutes with 18W of power. Four white LED indicator lights signify the charging status and current battery life. The lightweight and ultra slim design fits perfectly in your pocket wherever you go! Energizer PowerSafe Management guarantees against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank or charging other devices.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  5. Energizer - Ultimate Lithium 20,000 mAh 3-Port 22.5W Fast PD USB-C Universal Portable Battery Charger Power Bank with LCD Display - Black - Front_Zoom
    Top comment

    "External Power Bank with LCD Display...external power bank...i needed an external power bank for my ipad which uses a usb-c connector. this power back provides that connection at a reasonable price. there is the added advantage of a lcd screen to indicate power levels."

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    Product Description

    Charge your mobile devices including Smartphones, Tablets, earbuds and most USB devices with this Energizer power bank. The triple outputs, including 2 Smart USB-A and 1 USB-C, can charge up to three devices at the same time. 20W USB-C Power Delivery allows you to fast charge the new iPhones from 0 to 50% in only 30 minutes, and other USB-C devices. The Smart USB-A supports up to 22.5W fast charge for Samsung, Huawei, and other compatible Android devices charting them from 0-80% in as little as 35 minutes. The dual inputs allow you to recharge through USB-C or micro-USB based on your convenience. The LCD indicator shows the battery charging status and amount of power remaining. Energizer PowerSafe Management guarantees against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C cable is included.
    See all Portable Chargers & Power Banks
    Top comment

    "External Power Bank with LCD Display...external power bank...i needed an external power bank for my ipad which uses a usb-c connector. this power back provides that connection at a reasonable price. there is the added advantage of a lcd screen to indicate power levels."

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    Product Description

    Charge your mobile devices including Smartphones, Tablets, earbuds and most USB devices with this Energizer power bank. The triple outputs, including 2 Smart USB-A and 1 USB-C, can charge up to three devices at the same time. 20W USB-C Power Delivery allows you to fast charge the new iPhones from 0 to 50% in only 30 minutes, and other USB-C devices. The Smart USB-A supports up to 22.5W fast charge for Samsung, Huawei, and other compatible Android devices charting them from 0-80% in as little as 35 minutes. The dual inputs allow you to recharge through USB-C or micro-USB based on your convenience. The LCD indicator shows the battery charging status and amount of power remaining. Energizer PowerSafe Management guarantees against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C cable is included.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  6. Energizer - MAX 20,000mAh 15W USB-C 3-Port Universal Portable Battery Charger/Power Bank w/ LCD screen for Smartphones & Accessories - Black - Front_Zoom
    Top comment

    "Power bank...Excellent power bank. Used for Christmas decoration lighting. ...Power Bank...Excellent product and the best power bank what I have."

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    Product Description

    Charge your mobile devices quickly and efficiently with this Energizer power bank.  This portable charger provides 20,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more.  The bright LCD screen displays the current battery level so you always know how much power is left. The 20,000mAh battery provides up to 72 hours of additional power to smartphones while the two USB 2.1 Type-A ports with Rapid Charge technology deliver power consistently and efficiently to up to two devices at once at 10.5W. The USB-C output provides up to 15W of charging power.  Charge up to thee devices at once via two USB-A outputs and one USB-C output. The textured surface prevents slippage, scratches and fingerprints. Energizer PowerSafe Management protects against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank quickly and efficiently.
    See all Portable Chargers & Power Banks
    Top comment

    "Power bank...Excellent power bank. Used for Christmas decoration lighting. ...Power Bank...Excellent product and the best power bank what I have."

    See all customer reviews

    Product Description

    Charge your mobile devices quickly and efficiently with this Energizer power bank.  This portable charger provides 20,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more.  The bright LCD screen displays the current battery level so you always know how much power is left. The 20,000mAh battery provides up to 72 hours of additional power to smartphones while the two USB 2.1 Type-A ports with Rapid Charge technology deliver power consistently and efficiently to up to two devices at once at 10.5W. The USB-C output provides up to 15W of charging power.  Charge up to thee devices at once via two USB-A outputs and one USB-C output. The textured surface prevents slippage, scratches and fingerprints. Energizer PowerSafe Management protects against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank quickly and efficiently.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  7. Energizer - MAX 10,000mAh 15W USB-C 3-Port Universal Portable Battery Charger/Power Bank w/ LCD screen for Smartphones & Accessories - Black - Front_Zoom
    Top comment

    "Power bank...This power bank are good choice for traveler. It has long life battery.....Great power bank...It is a very versatile power bank and really works great!"

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    Product Description

    Charge your mobile devices quickly and efficiently with this Energizer power bank.  This portable charger provides 10,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more.  The bright LCD screen displays the current battery level so you always know how much power is left. The 10,000mAh battery provides up to 36 hours of additional power to smartphones while the two USB 2.1 Type-A ports with Rapid Charge technology deliver power consistently and efficiently to up to two devices at once at 10.5W. The USB-C output provides up to 15W of charging power.  Charge up to thee devices at once via two USB-A outputs and one USB-C output. The textured surface prevents slippage, scratches and fingerprints. Energizer PowerSafe Management protects against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank quickly and efficiently.
    See all Portable Chargers & Power Banks
    Top comment

    "Power bank...This power bank are good choice for traveler. It has long life battery.....Great power bank...It is a very versatile power bank and really works great!"

    See all customer reviews

    Product Description

    Charge your mobile devices quickly and efficiently with this Energizer power bank.  This portable charger provides 10,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more.  The bright LCD screen displays the current battery level so you always know how much power is left. The 10,000mAh battery provides up to 36 hours of additional power to smartphones while the two USB 2.1 Type-A ports with Rapid Charge technology deliver power consistently and efficiently to up to two devices at once at 10.5W. The USB-C output provides up to 15W of charging power.  Charge up to thee devices at once via two USB-A outputs and one USB-C output. The textured surface prevents slippage, scratches and fingerprints. Energizer PowerSafe Management protects against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank quickly and efficiently.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  8. Energizer - MAX 30,000mAh 15W USB-C 3-Port Universal Portable Battery Charger/Power Bank w/ LCD screen for Smartphones & Accessories - Black - Front_Zoom
    Top comment

    "Best power bank!...Great power bank if you need power to last!!! Definitely worth the money!!!...The best power bank...This power bank is very powerful and has abeautiful design"

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    Product Description

    Charge your mobile devices quickly and efficiently with this Energizer power bank.  This portable charger provides 30,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more.  The bright LCD screen displays the current battery level so you always know how much power is left. The 30,000mAh battery provides up to 108 hours of additional power to smartphones while the two USB 2.1 Type-A ports with Rapid Charge technology deliver power consistently and efficiently to up to two devices at once at 10.5W. The USB-C output provides up to 15W of charging power. Charge up to thee devices at once via two USB-A outputs and one USB-C output. The textured surface prevents slippage, scratches and fingerprints. Energizer PowerSafe Management protects against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank quickly and efficiently.
    See all Portable Chargers & Power Banks
    Top comment

    "Best power bank!...Great power bank if you need power to last!!! Definitely worth the money!!!...The best power bank...This power bank is very powerful and has abeautiful design"

    See all customer reviews

    Product Description

    Charge your mobile devices quickly and efficiently with this Energizer power bank.  This portable charger provides 30,000mAh capacity to charge smartphones, tablets, smartwatches, headphones, ear buds, and more.  The bright LCD screen displays the current battery level so you always know how much power is left. The 30,000mAh battery provides up to 108 hours of additional power to smartphones while the two USB 2.1 Type-A ports with Rapid Charge technology deliver power consistently and efficiently to up to two devices at once at 10.5W. The USB-C output provides up to 15W of charging power. Charge up to thee devices at once via two USB-A outputs and one USB-C output. The textured surface prevents slippage, scratches and fingerprints. Energizer PowerSafe Management protects against short circuit, overcurrent, overcharge and overdischarge for your power bank and devices. A USB-C Cable is included for recharging the power bank quickly and efficiently.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  9. mophie - Powerstation XL PD (Fast Charge) 20,000 mAh Portable Charger for Most USB-Enabled Devices - Black - Front_Zoom
    Top comment

    "Excellent power bank...Purchased for overseas trip and it would last a week without having to recharge the power bank....Does everything you need! Phenomenal power bank. :)"

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    Product Description

    The mophie powerstation XL provides fast, portable power for your digital devices. Its USB-C PD port puts out up to 20W of fast-charging power. It also has two USB-A ports, so you can charge three devices at once. The compact powerstation XL has an internal 20,000mAh battery with the capacity to meet the demands of your day.
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    Top comment

    "Excellent power bank...Purchased for overseas trip and it would last a week without having to recharge the power bank....Does everything you need! Phenomenal power bank. :)"

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    Product Description

    The mophie powerstation XL provides fast, portable power for your digital devices. Its USB-C PD port puts out up to 20W of fast-charging power. It also has two USB-A ports, so you can charge three devices at once. The compact powerstation XL has an internal 20,000mAh battery with the capacity to meet the demands of your day.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  10. myCharge - Adventure H2O Turbo 10,050 mAh Portable Charger for Most USB Enabled Devices - Gray - Front_Zoom
    Top comment

    "Power bank bank...So regular old power bank with rugged features it is then....Weatherproof power bank...Great power bank for outdoors. Weatherproof highly recommended. "

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    Product Description

    Keep your mobile devices powered on the go with the myCharge Adventure H2O Turbo portable power pack. The 10050mAh capacity powers up to two devices simultaneously, while the rubberized design provides reliable durability. Dust proof, drop proof, and water proof, the myCharge Adventure H2O Turbo portable power pack has USB-A and USB-C ports that deliver up to 18W of output for rapid charging in a rugged, compact profile for maximum portability.
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    Top comment

    "Power bank bank...So regular old power bank with rugged features it is then....Weatherproof power bank...Great power bank for outdoors. Weatherproof highly recommended. "

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    Product Description

    Keep your mobile devices powered on the go with the myCharge Adventure H2O Turbo portable power pack. The 10050mAh capacity powers up to two devices simultaneously, while the rubberized design provides reliable durability. Dust proof, drop proof, and water proof, the myCharge Adventure H2O Turbo portable power pack has USB-A and USB-C ports that deliver up to 18W of output for rapid charging in a rugged, compact profile for maximum portability.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
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