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Customer Ratings & Reviews

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Customer reviews

Rating 4.7 out of 5 stars with 1403 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 6 Showing 101-120 of 1,403 reviews
  • 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, Size

    Rated 5 out of 5 stars

    Good value

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

    Bought this to take on vacation for use in remote area in case of need. I haven't had to use this but once and did work as described on packaging. Held charge well. Good value for the price compared to other devices with same amount of battery charge. It is decently thin for fit into pocket but is longer at about 6".

    I would recommend this to a friend
    • Brand response from Anker Team
      Posted .

      So glad you love the product! Thank you for your support. We are super excited to provide something that betters your life. We promise to continue striving to exceed your expectations!

      Remember your device comes with an 18-month warranty, and anytime you need help just let us know.
      Email: [email protected]
      Phone number: +1 (800) 988 7973 anker

  • 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, Size

    Rated 5 out of 5 stars

    Excellent Charger!

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

    Anker power core III is fantastic. I am able to recharge multiple devices multiple times on one charge. It is small enough to fit in my pocket, making it truly easy to take anywhere with me. It feels solid in hand and with Anker you know you are getting a well built reliable product.

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

    Rated 5 out of 5 stars

    Anker 20,000

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

    Great powerbank. It holds charge for quite a while, and through relatively cold weather. It is a bit heavy, especially if you have more than one. It takes a while to charge, depending on your power source. I love being able to charge more than one device at a time.

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

    Rated 5 out of 5 stars

    Anker is a solid brand and my go to for tech

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

    Super solid device. Charges multiple devices multiple times. Great for family vacation trips and long days away from consistent power sources. Was able to keep my Galaxy Fold 4, my wife's iPhone, and other various devices charged all day long while out at Disneyland for a few days. Good size too, not too big. Anker is always a solid brand.

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

    Rated 4 out of 5 stars

    Nice portable phone charger.

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

    Compact charger. Takes a while to charge, but keeps the charge well. Seems rather heavier than I thought it would be for its size.

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

    Rated 5 out of 5 stars

    Best Battery Charger I’ve Ever Had.

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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 the best thing I take with me in trips. It allows me to charge my iPhone and Kindle, when I’m off the electric grid on vacations. It holds a charge for days. Make sure to have it fully charged, while you have electricity to last the longest.

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

    Rated 4 out of 5 stars

    Good battery overall

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

    If you are looking for a portable charger powerful enough to charge a few phones or iPads at the same time… look no further than this one. At full charge this battery pack quickly charged two iPhone 13 to full charge within a few hours. It is slimmer than most but not the slimmest I’ve seen. My one issue I have with this battery pack is that it does take longer than some other packs to reach full charge on its own but this could be alleviated by leave it over night recharging. Overall good product.

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

    Rated 5 out of 5 stars

    Great, long lasting portable battery

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

    Took this portable battery to Disneyland with me and it was well worth the money. It was slim enough to fit into my mini bag with everything else that I needed for the day. Used it several times throughout the day and by the end of the day still had more than half of the charging power left over. Would definitely recommend.

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

    Rated 5 out of 5 stars

    Good

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

    Overall good product, long lasting easy to use fast charging.

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

    Rated 5 out of 5 stars

    Great Buy

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

    This is the first power bank I’ve bought, and I am surprised as to how quickly it charged my phone, so in a full charge I was able to use it on my phone 2 1/2 times. 2 full charges and a mostly full charge by the time it was ready for another charging.

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

    Rated 5 out of 5 stars

    Great capacity, solid battery

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

    Plenty of capacity for long trips, great charging speed, easy to use.

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

    Rated 5 out of 5 stars

    Excellent Battery Capacity

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

    Love this product! It has TONS of capacity and the ability to charge multiple devices at once! Not only can it completely charge multiple items at once but it does so quickly with plenty of battery left over to keep going. Would highly recommend and will definitely be purchasing another for future trips.

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

    Rated 5 out of 5 stars

    Just what I needed. Long life.

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

    Long battery life. Chargers fast. Easy to carry. :)

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

    Rated 5 out of 5 stars

    Powerbank

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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.

    Holds a lot of power and charges the phone fast. A little heavy.

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

    Rated 5 out of 5 stars

    works as advertised

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

    Slim but still has plenty of charge, great for traveling

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

    Rated 5 out of 5 stars

    Great long lasting battery

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

    Great long lasting battery. Nice slim design. Fast charging.

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

    Rated 5 out of 5 stars

    Fast Charger

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

    Great battery charger. Holds charge for a long time. Charges iphones fast!

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

    Rated 5 out of 5 stars

    Omg

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

    I got this on a huge sale price. This is a powerhouse of a bank. It has PD vis type C and two type A connections for the option to charge 3 devices at once. And last for days. Incan even charge my Macbook 16’ M1 Pro with it. Haha i love this product.

    I would recommend this to a friend
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