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Customer Ratings & Reviews

Your price for this item is $13.99
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The comparable value price is $59.99

Customer reviews

Rating 4.7 out of 5 stars with 1401 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 5 Showing 81-100 of 1,401 reviews
  • Pros mentioned:
    Battery life, Charging speed

    Rated 5 out of 5 stars

    Highly recommend

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

    This power bank is 100% worth the money. It charges my phone 4 times fully and the speed it charges the phone is excellent. It has four light indicators to show you how much juice is left in the bank (in quarters of 100%). Charging the bank itself does take a while, between 6-8 hours is what ive experiences but this is not an issue for me.

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

    Rated 5 out of 5 stars

    Anker portable charger

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

    Charges very fast. Nice sleek thin design. Not too heavy like others.

    I would recommend this to a friend
  • Pros mentioned:
    Charging speed, Portability, Usb-c

    Rated 5 out of 5 stars

    Awesome quality

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

    Excellent quality and durability. I can charge different things at the same time. Holds well. Would be great if the prices dropped for these.

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

    Rated 4 out of 5 stars

    Good

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

    It charges really fast and can charge 2 phones or computers,tablets. Its a bit heavy to be carrying in a purse and it takes long to charge you leave it charging at night and its charge in the morning.

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

    Rated 5 out of 5 stars

    Excellent performance

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

    I purchased this item before my trip to UK & Europe and I was satisfied with the performance. I took lots and lots of videos and photos and my iphone used up lots of battery and i never run out of battery because my power bank saved me lol. Well recommended. I charged my iphone couple times before i charged my power bank. Great buy!

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Charging speed, Size

    Rated 5 out of 5 stars

    My portable Charger!

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

    I love it. It’s light and compact. It charges very fast. I was told by the salesman it will last a lot longer then the others.

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

    Rated 5 out of 5 stars

    Very Good Quality

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

    Owned this for more than 18 months as of this review and still quite satisfied with its performance. Able to charge two smartphones at the same time and still have about 1 dot left in the display. Still holds charge very well. Dropped this a few times, built like a tank.

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

    Rated 5 out of 5 stars

    My helpful power.

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

    Very useful. Good for the price. Easy to charge and lasts longer.

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

    Rated 5 out of 5 stars

    Does its job

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    Posted . Owned for 4 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Purchased for my daughter who's happy with its light weight and fast charge. It doesn't take up a lot of space in her bag, and it's faster than other portable chargers used in the past. It's on the pricier side, but it's definitely an investment because you never know when you'll need to charge your devices and you're nowhere near a charging station. The pouch for the charger is big enough to store some USB cables so plan accordingly if your cable runs on the longer side.

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

    Rated 5 out of 5 stars

    Great battery life and fast charging!

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

    Purchased this portable charger for a couple of upcoming trips where I'll be out and about often. This charger provides extremely fast charging times and lasted me a couple days before I ended up needing to charge it. I'd highly recommend! Will note though that I didn't charge more than one device at a time as I just used it myself. Obviously battery life will vary depending on the amount of devices charging at one time. Suited my needs perfectly.

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

    Rated 5 out of 5 stars

    Great

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

    High Capacity, Fast Charging and portable! Does what I need it to do.

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

    Rated 5 out of 5 stars

    Great Product

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

    I purchased this power bank to utilize whenever I am out and about at events and need a quick charge. I will say that it does carry some weight to it but not an uncomfortable amount. It can easily fit in your pocket, fanny pack or backpack without any issue. You will have enough charge for a full day without any worry. I highly recommend this product for your charging needs.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Charging speed
    Cons mentioned:
    Weight

    Rated 5 out of 5 stars

    Works great !

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

    Works great and very functional. It is a little heavy, but it charges for a long time and charges very fast.

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

    Rated 5 out of 5 stars

    A good charger

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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 charger charges phone and tablet fast and usually 3+ charges between charges

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

    Rated 5 out of 5 stars

    Better over the 49 buck option

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

    So far charged my phone 2 times and earbuds once and only dropped 1 bar on the power bank. Love the auto on off charge. USB to type C was also a big bonus ( about 3 feet or 1 meter) using power bank where US plugs don't work to keep in touch with family and friends. Had it in my carry on bag so airport isn't a problem. Not my first, second or even third Anker product over the years.... Keep buying there stuff and it keeps on working.... For me that is :)

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

    Rated 5 out of 5 stars

    excellent choice

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

    This has been a great purchase for me. My phone was at the 3 year mark so the battery can't make it through the day with even moderate use. I just throw this in the backpack and can get through anything. It will probably charge my phone 6 or 7 times, and my 10" tablet 3 or 4 times from dead.

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

    Rated 5 out of 5 stars

    Very good Anker 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 really love this item its very convenient, have duo charging capacity. Charges small devices with a mode that stop charhing them so it doesn't shorten the small device battery life. But its has so much charge capability for a nice not to big but not to small but I'd say its perfect!

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

    Rated 5 out of 5 stars

    Plenty of Power

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

    I used this battery pack to charge my android phone and it charged it from 59% to 100% while I was watching a video for a couple of hours. The amazing thing is that all 4 lights were still lit when I checked the battery charge status after this charge. It is no larger than my Galaxy Note 8. I am confident that it will have plenty of power to power my Gopro for several hours.

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

    Rated 5 out of 5 stars

    Holds full charge a long time!

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

    Bought this during an ice storm in 2022. Haven't charged it since yet it shows fully charged almost a full year later. That alone is impressive. Charges pretty fast but definitely not a "fast charge" but that's not what you're buying it for anyhow =)

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

    Rated 5 out of 5 stars

    Long lasting

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

    The over all build of the product is strong and rigid. The product purchased more than two years ago and still going strong. It has not developed a memory like most batteries in portable chargers. Great buy.

    I would recommend this to a friend
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