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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

Pros mentioned filter

Cons mentioned filter

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 41 Showing 801-820 of 1,402 reviews
  • Pros mentioned:
    Usb-c

    Rated 5 out of 5 stars

    Good product

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

    Powerful and versatile powerpack. Love having both USB and C outlets.

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

    Rated 5 out of 5 stars

    Heated Vest

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

    Heats my heated vest. Last longer than other battery.

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

    Portable charger

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

    Very good charger it surprised me went on vacation with it

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

    Rated 5 out of 5 stars

    Perfect charger

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

    Very good quality battery lasts for a long time I would recommend it it's great

    I would recommend this to a friend
  • 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.

    Great overall no problem dose it’s job great price will always have one

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

    Rated 5 out of 5 stars

    Must have for on the go

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

    Great product, used on a trip and was able to recharge all my equipment

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

    Rated 5 out of 5 stars

    Chopps

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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.

    Great fast charging. I definitely would recommend this power bank.

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

    Rated 5 out of 5 stars

    Anker battery charger

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

    Was looking for a charger that was not too expensive, but gave me several hours of charge.

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

    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 already own one and needed another one for the car. Its great it's slim and light

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

    Nice product

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

    Nice and sleek design. Great companion for trips and for college students.

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

    Rated 5 out of 5 stars

    Portable battery

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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 my portable battery, we bought it for a family trip and it was perfect.

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

    Rated 4 out of 5 stars

    It works

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

    [Employee of bestbuy] It’s convenient and the slim profile makes a great fit to toss into just about any bag

    I would recommend this to a friend
  • Rated 2 out of 5 stars

    Reviews said there's high fail rate and mine faile

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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.

    I got this for a trip and it worked twice. Once when I tested it before my trip, and the second time during my trip. When I charged it for a 3rd time, it stopped working altogether. It would light up and let me know it was charged if it was plugged in, but once I tried to charge my phone with it, it would just flash for half a second and then die. I tried all kinds of fixes, from Reddit to the official Anker site, tried resetting it, tried different cables, tried charging different electronics, and nothing ever worked. Other reviewers and people on the Internet shared that there's a real chance that this item fails very early on. Best buy replaced it, and I'm very grateful for that and it makes me want to keep buying from Best buy, but as far as this product goes, I would highly advice against getting it. Maybe other Anker products are better.

    No, I would not recommend this to a friend
    • Brand response from Anker Team
      Posted .

      Dear Customer,

      I am truly sorry to hear that you are experiencing this issue. We understand how frustrating it can be and we appreciate your patience.

      Please rest assured that we stand behind our products and are willing to provide assistance within our capacity. We are committed to ensuring your satisfaction and resolving your concerns promptly.

      You can reach out to us via support@anker.com or call us at +1 (800) 988 7973. Our customer service team is always ready to help you.

      We look forward to your message so we can address your issue as soon as possible. Thank you for bringing this to our attention and giving us the opportunity to make things right.

      Best Regards, anker

  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Good buy!

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

    Convenient - great length of charge - solid quality

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

    Rated 5 out of 5 stars

    Very Satisfied

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

    Does the job.... Charged phone 3 times and tablet once off 1 charge. Very satisfied.

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

    Rated 5 out of 5 stars

    Great charger

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

    Bought this for my Nintendo Switch so I can charge it on the go! Works great.

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

    Good and sleek

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

    Pretty good quality and pretty good price abd good color

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

    Rated 5 out of 5 stars

    Perfect!

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

    Its very helpfull, gives me charge for all day. Perfect!

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

    Worked great!

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

    Worked great on last weekend's campout! Looking forward to using it again.

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

    A Great Charger

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

    I was in Southern California in July, and had to be out of my lodging for a few hours every day. My iPhone’s battery drained so fast, so having this charger with me helped a lot. I just left the phone charging in my tote bag while I was out getting things done. I was either on foot or on the bus, and did not have a car since I flew down to Los Angeles.

    I would recommend this to a friend