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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 50 Showing 981-1,000 of 1,402 reviews
  • Rated 5 out of 5 stars

    Fly Southwest? Buy this charger!

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

    Works great. I needed it as I flew southwest and they do not have usb chargers on their planes. This charger worked out perfectly.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Love it

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    Posted . Owned for 8 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Been looking for something reliable and this is it. It’s perfect, I bring it with me everywhere.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Powerful

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

    Love this product: it’s kind of big, however it holds so much charging power I went a week worth of travel and all I needed was this.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Portable battery charger

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

    Works great. Plan to use it in the airport and maybe on the plane on a long overseas flight to power a mini-cooler for my medication that requires refrigeration.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Excellent power pack!

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

    This is a very awesome power pack. I took this on my trip to Cancun and it came in handy when I needed it and didn’t leave me hanging. 

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great power bank

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

    Another excellent Anker product. Charges really quickly, charges my phone and headphones really quick too. The USB/USB-C ports are very useful for multi-charging at once

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Anker a superior product for your value!!!

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

    Anker engineering at its best, does what is promised to do, quality and dependability superior to all the rest, nothing bad to say about it!!!

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Good for travel

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This battery is very convenient when travel, I travel a lot and it never lets me down

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Keeps Us Going

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

    My partner takes it to work every day to keep his phone charged. We will be taking it on vacation to Europe this summer to keep both phones going so we can take lots of photos. We LOVE it.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Slim body and big battery

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

    So far so good. Used it to run my camp string lights on a recent trip. Worked fine in temps of mid 30s at night.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Unique

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    Posted . Owned for 11 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I gave this to my son as a present and he always use it outside to charge his phone and he doesn’t have the cord

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    It does not support fast charging

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

    It does not support fast charging, as my Note 20 ultra charges from 0 to 100 within 2:18 minutes, generally if you want to look for an elegant design. This will benefit you

    No, I would not recommend this to a friend
  • Rated 4 out of 5 stars

    Charges fast, but...

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

    Harger is great, but it takes forever to recharge the battery pack, and one of the usb ports stopped chargingwithin the first week. I was out of town so there was nothing i could do

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

    Rated 3 out of 5 stars

    Portable charger

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

    Charges my phone when I’m on the go. Wish I would have shopped around more before I bought it but it gets the job done

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    365 Days and Counting!

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

    A year in and she still works as I just bought 'er. Sweet power charge feature too if you double press the circular button.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Super like

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

    I think this product is a real gem. I take it everywhere and it continues to change my android, wife's iPhone, and my windows computer. I plan on buying another one.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Great if you need an external phone battery

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

    I lost a prior version of an external battery. I bought this as a replacement. It performs as advertised. I had a mess of Rewards Points so the cost was very reasonable.

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    Inadequate "User Manual"

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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.

    This is my first portable battery. The "User Manual" was a tiny brochure, with just a few lines of instruction. At first, I did not understand what to do. I figured out that I had to use my phone's electrical cord to charge this battery charger. I contacted Anker (manufacturer) for more detailed information, and they offered nothing more than the tiny "User Manual" that I already had. I finally figured out how to charge the battery (overnight) and then charge my phone. The level of the battery's charge is indicated by tiny blue flashing lights. You might miss seeing them!

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Power Bank

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This powerbank is very resistant even in high temperatures.

    I would recommend this to a friend
  • Rated 5 out of 5 stars

    Convenient

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works great a bit bulky but it works for what I need.

    I would recommend this to a friend