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Customer Ratings & Reviews

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Customer reviews

Rating 4.7 out of 5 stars with 1402 reviews

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Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.7 out of 5 stars

  • Ease of Use

    Rating 4.8 out of 5 stars

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93%would recommend to a friend

Customers are saying

Customers have good things to say about the PowerCore III 20K mAh USB-C Portable Battery Charger's long battery life, convenient portability, and compact size. Many appreciate its multiple charging ports, including USB-C, and find the performance and design to be excellent. While some find it a bit heavy, most agree it's a worthwhile purchase.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
Page 24 Showing 461-480 of 1,402 reviews
  • Pros mentioned:
    Charging speed

    Rated 5 out of 5 stars

    Nice charger

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a great extra charger for summer vacations! Give it a quick charge and then plug devices/speakers in and away you go.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Love THIS

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    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The battery life on this is AMAZING. Barely had to charge when I took it on vacation for the beach. Multiple phones used.

    I would recommend this to a friend
  • Pros mentioned:
    Usb-c

    Rated 4 out of 5 stars

    Nice power bank

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I really like the power bank. The fact that is has both usb & ubc-c outputs is a plus. The only thing i would've liked would have been some sort of digital reading showing battery life.

    I would recommend this to a friend
  • Pros mentioned:
    Charging speed

    Rated 5 out of 5 stars

    Lightweight and good value

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Seems to be working well so far. It’s incredibly lightweight and charges my devices quickly. Good value for the low price. Also appreciated the speedy delivery by Best Buy.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Nice Portable Charger

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This portable cell phone charger is nice. It charged my Samsung fully 3 times and nearly a 4th time. This will come in handy when I'm not near an outlet.

    I would recommend this to a friend
  • Pros mentioned:
    Usb-c

    Rated 5 out of 5 stars

    Portable battery charger.

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    We purchased this item to take with us on a trip abroad. We never got the chance to use it, but it was nice to know we had it with us if the moment came up. Thank you.

    I would recommend this to a friend
  • Pros mentioned:
    Charging speed

    Rated 5 out of 5 stars

    Nice portable charges phone fast

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Does it’s job well. Phone charges exponentially faster compared to plugging your phone or device to a outlet.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Best Portable Charger

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It’s the best portable charger that you can buy. It does take a while to charge so I leave it charging over night. On one full charge it charges my iPhone 11 over 5 times. 10/10

    I would recommend this to a friend
  • Pros mentioned:
    Size

    Rated 5 out of 5 stars

    What I was looking for in a power bank.

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is a much better power bank than my 3 yr old power bank. It is slim and light enough to carry around. I was able to charge 2 phones at the same time.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Worked well on our trip

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    We bought these chargers for a trip and they came in handy. Worked as they were supposed to and held a charge forever.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Pretty reliable battery bank

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    Posted . Owned for 10 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Next battery bank. I'm able to charge my phone a couple times with it and it lasts a pretty long time.

    I would recommend this to a friend
  • Pros mentioned:
    Size

    Rated 5 out of 5 stars

    Compact, slim and powerful.

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Anker is compact and slim. Works great, especially when running errands and away from home. Will use it for traveling, when Covid restrictions are lifted.

    I would recommend this to a friend
  • Pros mentioned:
    Charging speed

    Rated 5 out of 5 stars

    Very nice portable power source!

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love the availability and compatibility of so much power - we used it to recharge two devices at once and it kept on giving. Great investment for travel!

    I would recommend this to a friend
  • Pros mentioned:
    Portability

    Rated 5 out of 5 stars

    NIce battery pack

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    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This little gem does the trick to power up all my devices for Baesball Game Changer setup.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 4 out of 5 stars

    Replacement for old recalled dangerous power sour.

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I bought this to replace 2 old versions (from another company) that were recalled. This works as advertised and a single battery replaced 2 of the old ones.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 4 out of 5 stars

    Great product- inexpensive price.

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This product holds a charge and recharges quickly. A plus is portable design that it is easy to carry in a purse or backpack. Comes with a carrying case where the cord can be held. Bonus that you can charge multiple items at once.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Great Portable Charger

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I am in the military and I always take this bad boy out with me on long training events keeps my phone charged for up to a week and a half. This is the second one I own.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Recommend to purchases

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    Posted . Owned for 1 year when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Good qualification product. Since i changed once I can use for long time

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Nice product

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Exactly what I was looking for. Gives me 4-5 charges for my phone battery. Nice build quality.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Great Portable Charger

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    So far the charger has done a great job at keeping its charge. I have been able to use it for multiple phone charges without having to recharge.

    I would recommend this to a friend