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Best Buy customers often prefer the following products when searching for 4000 mah portable charger.

Portable chargers are a must-have for anyone who uses their phone frequently. Whether you're on a business trip, at the beach, or just running errands around town, a portable charger can give you enough power to make it through the day or even through the night. Browse the top-ranked list of 4000 mAh portable chargers below along with associated reviews and opinions.

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  1. Anker - Power Bank(10000mAh, 20W, 3-Port) - Black - Front_Zoom
    Top comment

    "Excellent portable charger...Well designed product that meets my needs for a portable charger. I am also looking forward to have an extra charger in the event of a power outage....Portable charger...Great product, charges my phone 3x before recharging the portable. Great buy"

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    Product Description

    Elevate your charging experience with the PowerCore III Sense (10000mAh, 20W, 3-Port). This power bank offers versatile charging options, featuring Triple Charging Modes including a 20W Power Delivery USB-C port, a PowerIQ-enabled USB-A port, and a trickle-charging mode for low-power devices. Charge two devices simultaneously through its dual USB ports. With exquisite craftsmanship, its sleek design and cool-blue LED light wheel showcase the battery level elegantly. Quality is paramount inside and out. Recharge swiftly in just 4.5 hours using a USB-C Power Delivery wall charger (charger not included), or approximately 10.2 hours with a USB-A charger and cable (not included). Elevate your charging game with PowerCore III Sense 10K.
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    Top comment

    "Excellent portable charger...Well designed product that meets my needs for a portable charger. I am also looking forward to have an extra charger in the event of a power outage....Portable charger...Great product, charges my phone 3x before recharging the portable. Great buy"

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    Product Description

    Elevate your charging experience with the PowerCore III Sense (10000mAh, 20W, 3-Port). This power bank offers versatile charging options, featuring Triple Charging Modes including a 20W Power Delivery USB-C port, a PowerIQ-enabled USB-A port, and a trickle-charging mode for low-power devices. Charge two devices simultaneously through its dual USB ports. With exquisite craftsmanship, its sleek design and cool-blue LED light wheel showcase the battery level elegantly. Quality is paramount inside and out. Recharge swiftly in just 4.5 hours using a USB-C Power Delivery wall charger (charger not included), or approximately 10.2 hours with a USB-A charger and cable (not included). Elevate your charging game with PowerCore III Sense 10K.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  2. 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

    "Energizer Portable Charger...Very good and useful product; portable, durable, and reliable....Portable charger...This portable charger works well and lasts decently long"

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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

    "Energizer Portable Charger...Very good and useful product; portable, durable, and reliable....Portable charger...This portable charger works well and lasts decently long"

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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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    See all Portable Chargers & Power Banks
  3. myCharge - POWERHUB ULTRA 10,000mAh Everything Built-In Portable Charge for Most USB Enables Devices - Black - Front_Zoom
    Top comment

    "Great portable charger...I love this!!! Super portable and has every kind of charger you need!...Portable Charger...It's everything he wanted in a portable charger."

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    Product Description

    The new myCharge POWERHUB ULTRA 10,000mAh everything built-in portable charger is one of a kind and packed with power. With an integrated iPhone (Apple® Lightning™) cable, an integrated USB-C cable, and built-in USB-A & USB-C ports, you can keep all your devices charged anywhere. Carrying charging cables is a thing of the past, not only are the cables built in for effortless charging but self-contained wall prongs make for effortless recharging – just plug it directly into the wall.
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    Top comment

    "Great portable charger...I love this!!! Super portable and has every kind of charger you need!...Portable Charger...It's everything he wanted in a portable charger."

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    Product Description

    The new myCharge POWERHUB ULTRA 10,000mAh everything built-in portable charger is one of a kind and packed with power. With an integrated iPhone (Apple® Lightning™) cable, an integrated USB-C cable, and built-in USB-A & USB-C ports, you can keep all your devices charged anywhere. Carrying charging cables is a thing of the past, not only are the cables built in for effortless charging but self-contained wall prongs make for effortless recharging – just plug it directly into the wall.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  4. Energizer - Ultimate Lithium 20,000 mAh 20W USB-C PD & 15W Qi Wireless 4-Port Portable Battery Charger Power Bank with LCD Display - Black - Front_Zoom
    Top comment

    "Best Portable Charger Money Can Buy...Takes a while to charge but overall a good and reliable charger!...Portable charger...Great portable phone charger ! I would highly recommend this to anyone who is constantly on the go"

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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 15W charging. Note that 10W for Apple, and 15W output for Samsung, Google Pixel, and other compatible devices should be expected. The 20,000mAh battery provides up to 72 hours of power. There are three outputs providomg 18W via a USB-A, 15W via the Wireless Qi charging mechanism, and 20W of power via the USB-C Power Delivery port. You can utilize all three ports at the same time for charging up to three devices at once. The 20W Power Delivery 3.0 USB-C allows you to fast charge certain iPhones from 0 to 50% in only 30 minutes with 20W of power. The 18W USB-A output supports fast charging for Samsung and other compatible Android devices allowing you to charge your compatible Android phone from 0-50% in only 30 minutes with 18W of power. The LCD screen displays current battery life and will show battery life as the unit charges as well. Energizer PowerSafe Management guarantees against short circuit, overcurrent, overcharge and overdischarge of 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

    "Best Portable Charger Money Can Buy...Takes a while to charge but overall a good and reliable charger!...Portable charger...Great portable phone charger ! I would highly recommend this to anyone who is constantly on the go"

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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 15W charging. Note that 10W for Apple, and 15W output for Samsung, Google Pixel, and other compatible devices should be expected. The 20,000mAh battery provides up to 72 hours of power. There are three outputs providomg 18W via a USB-A, 15W via the Wireless Qi charging mechanism, and 20W of power via the USB-C Power Delivery port. You can utilize all three ports at the same time for charging up to three devices at once. The 20W Power Delivery 3.0 USB-C allows you to fast charge certain iPhones from 0 to 50% in only 30 minutes with 20W of power. The 18W USB-A output supports fast charging for Samsung and other compatible Android devices allowing you to charge your compatible Android phone from 0-50% in only 30 minutes with 18W of power. The LCD screen displays current battery life and will show battery life as the unit charges as well. Energizer PowerSafe Management guarantees against short circuit, overcurrent, overcharge and overdischarge of 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. Sharper Image - PowerBoost Pro Hot and Cold Compact - Black - Angle_Zoom
    Top comment

    "Portable and strong!...The Sharper Image Powerboost Pro Compact portable percussion massager is surprisingly powerful. "

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    Product Description

    Sharper Image Powerboost Pro+ Compact delivers an unrivaled deep tissue massage experience, effectively targeting sore muscles and tension for outstanding sports recovery. Seamlessly alternate between soothing heat (115°F) and invigorating cold (38°F) with the groundbreaking dual-temperature attachment, and easily manage intensity levels using the user-friendly dial and bright LED display. The whisper-quiet brushless motor guarantees tranquil massage sessions without disturbances, while the compact, long-lasting design provides on-the-go relief with a 2-hour runtime per charge. Customize your massage with 4 unique attachments - Round, Hot + Cold, Fork, and Flat - and conveniently store the device and accessories in the provided carrying case. Transform your sports recovery routine with the Powerboost® Pro+ Compact today!
    See all Percussive Massagers
    Top comment

    "Portable and strong!...The Sharper Image Powerboost Pro Compact portable percussion massager is surprisingly powerful. "

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    Product Description

    Sharper Image Powerboost Pro+ Compact delivers an unrivaled deep tissue massage experience, effectively targeting sore muscles and tension for outstanding sports recovery. Seamlessly alternate between soothing heat (115°F) and invigorating cold (38°F) with the groundbreaking dual-temperature attachment, and easily manage intensity levels using the user-friendly dial and bright LED display. The whisper-quiet brushless motor guarantees tranquil massage sessions without disturbances, while the compact, long-lasting design provides on-the-go relief with a 2-hour runtime per charge. Customize your massage with 4 unique attachments - Round, Hot + Cold, Fork, and Flat - and conveniently store the device and accessories in the provided carrying case. Transform your sports recovery routine with the Powerboost® Pro+ Compact today!
    See all Percussive Massagers
    See all Percussive Massagers
  6. Anker - Power Bank (24000mAh, 65W, 3-Port) - Black - Front_Zoom
    Top comment

    "Very good charger !!!!! Very useful !!!!! Charges really fast than other chargers especially for the phones. ...Solid Charger - Would reccomend...Fast! Chargers my S21 Ultra great and fully Twice over. Easily recommend, it is a little chunkier thanI expected."

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    Product Description

    Experience superior charging with this power bank, boasting a robust 65W total output and two USB ports for swift simultaneous charging of two high-demand devices. (Note: USB-C 1 delivers up to 45W, while USB-C 2 outputs up to 20W.) Enjoy rapid recharging with the 30W high-speed feature, achieving a full charge in just 3.5 hours—twice as quick as standard portable chargers. Crafted for versatility, it provides optimal charging for a range of devices including laptops, phones, tablets, and various USB devices. With its massive 24,000mAh capacity, it can power up a MacBook Pro once or provide up 4.8 charges for the latest iPhone, making it the perfect partner for weekend escapes. Experience a new level of charging with this power bank's speed, power, and remarkable flexibility.
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    Top comment

    "Very good charger !!!!! Very useful !!!!! Charges really fast than other chargers especially for the phones. ...Solid Charger - Would reccomend...Fast! Chargers my S21 Ultra great and fully Twice over. Easily recommend, it is a little chunkier thanI expected."

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    Product Description

    Experience superior charging with this power bank, boasting a robust 65W total output and two USB ports for swift simultaneous charging of two high-demand devices. (Note: USB-C 1 delivers up to 45W, while USB-C 2 outputs up to 20W.) Enjoy rapid recharging with the 30W high-speed feature, achieving a full charge in just 3.5 hours—twice as quick as standard portable chargers. Crafted for versatility, it provides optimal charging for a range of devices including laptops, phones, tablets, and various USB devices. With its massive 24,000mAh capacity, it can power up a MacBook Pro once or provide up 4.8 charges for the latest iPhone, making it the perfect partner for weekend escapes. Experience a new level of charging with this power bank's speed, power, and remarkable flexibility.
    See all Portable Chargers & Power Banks
    See all Portable Chargers & Power Banks
  7. myCharge - AMP PRONG MAX 20,000mAh Everything Built-In Portable Charge for Most USB Enables Devices - Black - Front_Zoom
    Top comment

    "Portable charger...It the best portable charger ever. Wish it has for my iPhone 14 but it’s only for 15...portable charger...charger works great, its fast and convenient,......."

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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
    Top comment

    "Portable charger...It the best portable charger ever. Wish it has for my iPhone 14 but it’s only for 15...portable charger...charger works great, its fast and convenient,......."

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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
  8. myCharge - AMP PRONG PLUS 10,000mAh Everything Built-In Portable Charge for Most USB-C Enables Devices - Blue - Front_Zoom
    Top comment

    "It was the best investment ever. This portable charger is my best friend ....Portable charger...Love this portable charger! Easy to use with an adapter to a cell 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

    "It was the best investment ever. This portable charger is my best friend ....Portable charger...Love this portable charger! Easy to use with an adapter to a cell 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
  9. Sharper Image - PowerBoost Palm - Black - Angle_Zoom

    Model: 1016983
    SKU: 6553270
    Top comment

    "My father really liked it It was good and portable...Super light and portable...It is light enough that I can hold it over my shoulder for 10 mins without it being too heavy ! I don’t have a portable massager, so I’m super excited to bring this on my next trip."

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    Product Description

    Discover the ultimate relaxation with the Sharper Image Powerboost Palm Portable Percussion Massager. Engineered with Quiet-Drive Technology, this massager has a whisper-quiet operation for relaxing massage sessions. Customize your experience with 4 adjustable speed levels, allowing you to find the perfect intensity to soothe your muscles. Its ergonomic design ensures a comfortable grip, allowing you to effortlessly target those hard-to-reach areas. With 4 unique attachments included, this massager offers versatility to target specific body parts and muscle groups. Enjoy up to 2 hours of uninterrupted use on a single charge, ensuring that your massager is always ready to provide a rejuvenating experience whenever you need it. Treat yourself to the recovery tool you deserve with the Sharper Image Powerboost Palm Portable Percussion Massager.
    See all Body, Hand & Foot Care
    Top comment

    "My father really liked it It was good and portable...Super light and portable...It is light enough that I can hold it over my shoulder for 10 mins without it being too heavy ! I don’t have a portable massager, so I’m super excited to bring this on my next trip."

    See all customer reviews

    Product Description

    Discover the ultimate relaxation with the Sharper Image Powerboost Palm Portable Percussion Massager. Engineered with Quiet-Drive Technology, this massager has a whisper-quiet operation for relaxing massage sessions. Customize your experience with 4 adjustable speed levels, allowing you to find the perfect intensity to soothe your muscles. Its ergonomic design ensures a comfortable grip, allowing you to effortlessly target those hard-to-reach areas. With 4 unique attachments included, this massager offers versatility to target specific body parts and muscle groups. Enjoy up to 2 hours of uninterrupted use on a single charge, ensuring that your massager is always ready to provide a rejuvenating experience whenever you need it. Treat yourself to the recovery tool you deserve with the Sharper Image Powerboost Palm Portable Percussion Massager.
    See all Body, Hand & Foot Care
    See all Body, Hand & Foot Care
  10. 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

    "Portable charger...This portable charger last for a week and a half. Love this product!...Excellent portable charger...Excellent portable charger. I especially like the LED numerical readout of the amount of charge left. "

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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

    "Portable charger...This portable charger last for a week and a half. Love this product!...Excellent portable charger...Excellent portable charger. I especially like the LED numerical readout of the amount of charge left. "

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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
    See all Portable Chargers & Power Banks
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