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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. Energizer - MAX 5,000mAh 15W USB-C 3-Port Universal Portable Battery Charger/Power Bank w/ LCD screen for Smartphones & Accessories - Black

    SKU: J36C4YXKWS

    Great little charger for hiking...This is the perfect size and output to take hiking. The larger mAh portable chargers were a little too bulky when you are trying to pack as light as you can but this...

    Product Description

    A slim black power bank with 5,000mAh capacity, LCD screen, and three ports for simultaneous device charging.
    See all Portable Chargers & Power Banks
    Your price for this item is $14.99

  2. Energizer - MAX 30,000mAh 15W USB-C 3-Port Universal Portable Battery Charger/Power Bank w/ LCD screen for Smartphones & Accessories - Black

    SKU: J36C4YXKZ3

    Portable charger...I have had other portable chargers and none worked as good than this one 5⭐️...Large, High-Powered Portal Charger...Large portable charger that easily charges my Macbook Pro, iPad and...

    Product Description

    A high-capacity black portable charger with LCD screen, three ports, and 15W USB-C fast charging.
    See all Portable Chargers & Power Banks
    Your price for this item is $39.99

  3. Energizer - Ultimate Lithium 20,000 mAh 20W USB-C PD & 15W Qi Wireless 4-Port Portable Battery Charger Power Bank with LCD Display - Black

    SKU: J36C4YXK5P

    Portable charger...Great fast charger and convenient and super easy to use...Battery Charger Review...Good value for dollar and works as described - Energizer - Ultimate Lithium 20,000 mAh 20W USB-C PD...

    Product Description

    A black portable power bank offering 20,000mAh capacity, 20W USB-C PD, 15W Qi wireless charging, and LCD display.
    See all Portable Chargers & Power Banks
    Your price for this item is $49.99

  4. Energizer - Ultimate Lithium 10,000 mAh 3-Port 37.5W max 20W USB-C PD & 15W Qi Wireless Portable Power Bank - Black

    SKU: J36C4YXKQT

    I can charge my phone, wireless earbuds, and even my tablet all at once without slowing down. f you need a reliable, stylish, and feature-packed portable charger, this Energizer model is worth every penny!...Great...

    Product Description

    A black portable power bank offering 10,000mAh capacity, 20W USB-C PD, and 15W Qi wireless charging.
    See all Portable Chargers & Power Banks
    Your price for this item is $29.99

  5. Energizer - Ultimate Lithium 10,000 mAh 20W USB-C PD & 15W Qi Wireless 4-Port Portable Battery Charger Power Bank with LCD Display - Black

    SKU: J36C4YXK52

    This portable battery charger is a Good quality for the price I paid....Portable Battery Charger

    Product Description

    A black portable power bank offering 10,000mAh capacity, 20W USB-C PD, 15W Qi wireless charging, and LCD display.
    See all Portable Chargers & Power Banks
    Your price for this item is $34.99

  6. Energizer - 5,000mAh SLIM METAL 20W Magnetic Wireless Qi/Qi2.0/MagSafe PowerBank, Portable Charger, 2 Outputs, LED Display, & USB-C - Black

    SKU: J36C4YX4LJ

    Product Description

    A slim black metal power bank offering 5,000mAh capacity, 20W output, MagSafe, and LED display.
    See all Portable Chargers & Power Banks
    Your price for this item is $16.99
    Save $13
    The previous price was $29.99

  7. myCharge - 10,000 mAh Portable Charger for Most USB-C and Apple Devices - Black

    SKU: J365K2CR96

    The right portable charger

    Product Description

    A black portable charger with 10,000mAh capacity, built-in wall plug, and integrated USB-C and Apple cables.
    See all Portable Chargers & Power Banks
    Your price for this item is $53.99
    Save $6
    The previous price was $59.99

  8. PopSockets - MagSafe PowerPack - Black

    SKU: J39HLKZZJ5

    Love this portable charger, it’s super convenient for travel. ...Package states 5000 mAh but rated for 2800 mAh. A loss of 44% between capacity in and capacity out means a lot of heat is generated and...

    Product Description

    A sleek black magnetic 5000mAh power bank with grip and stand for MagSafe-compatible devices.
    See all MagSafe Portable Chargers & Power Banks
    Your price for this item is $39.99

  9. PopSockets - MagSafe PowerPack - White

    SKU: J39HLKZKVW

    Great charger and phone stand

    Product Description

    A sleek white magnetic 5000 mAh power bank with grip and stand, compatible with MagSafe devices.
    See all MagSafe Portable Chargers & Power Banks
    Your price for this item is $39.99

  10. Speck - ClickLock StandyBank Portable Wireless Charger - Black

    SKU: J39HL8SRYT

    Product Description

    A black MagSafe-compatible wireless power bank with kickstand, ClickLock technology, and 5000mAh capacity.
    See all Portable Chargers & Power Banks
    Your price for this item is $59.99
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In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.