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Customer Ratings & Reviews

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 8 Showing 141-160 of 1,402 reviews
  • Pros mentioned:
    Battery life, Charging speed, Portability

    Rated 4 out of 5 stars

    Good Charge Bank

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

    Good product, easy to use. Charges very well. Would recommend.

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

    Rated 5 out of 5 stars

    Great for outdoor activities

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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 portable battery charger for a cruise I recently went on, it's not the lightest one you can get but well worth the money. My dad uses sometimes when he goes hunting and it last him the whole time he is in the woods.

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

    Rated 5 out of 5 stars

    Highly recommend

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

    Great design. Not a huge fan of the texture but that’s a personal issue and definitely doesn’t take away from the value. Great that it has multiple ports and utilizes fast charging. Super thin as well

    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, Size

    Rated 5 out of 5 stars

    Great Value Battery

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

    Exceptional value and size/weight not an issue when biking and storing in backpack. The battery will definitely last all day. Great extra battery when making long bike rides (Strava tracking).

    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
  • Pros mentioned:
    Battery life, Size

    Rated 5 out of 5 stars

    Good charger

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    Posted . Owned for 7 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Holds a charge really well. Takes awhile to charge to full but that’s because it’s so big. Good form factor, fits in my side bag while on the go.

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

    Rated 5 out of 5 stars

    Nice job

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

    Its excelllent , long last. Don't need long charging time to be completed. Its surface is tough. If accidentally it dropps down. Battery will be fine .

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

    Rated 5 out of 5 stars

    Perfect for me, charges quickly

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

    This is perfect for me, this charger works quickly when has been a life saver for me. It also holds a charge for a long time without needing to be charged frequently.

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

    Rated 5 out of 5 stars

    Worth it

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

    It holds charge for a good while. Been using in my car since my cigarette lighter is broken. Charge it every few days, good brand, worth it even for the price. A big pro is it charges through usb c

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

    Rated 5 out of 5 stars

    Good size, not too bulky; Bring a C-C cable

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

    Great size, especially compared to my Samsung Galaxy S8+, if not a little heavy if carrying it around by itself. Especially efficient charger with a good C-to-C cable, too!

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

    Rated 5 out of 5 stars

    Great Product !

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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 really great product ! I was able to charge my phone instantly and it was worth the money. I always have mine with me and the battery last a great time.

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

    Rated 5 out of 5 stars

    Good stuff

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

    I love Anker products. Their reputation is stellar and so is the performance. I use my phone a lot and I have 2 of these. One to use while the other's already charged up. Good stuff.

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

    Rated 5 out of 5 stars

    Great Charger!!!

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

    Great battery charger to have around when you need something portable. Keeps my phone charged & it is very handy to keep around when there is a storm. Plus, you can also keep this in your pocket. I recommend buy this!!!

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

    Rated 5 out of 5 stars

    Plenty of power and easy to carry

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

    Lightweight and packs plenty of power. I have used this to keep my 12.9” iPad Pro charged up after a couple days camping with no access to power. I had no problem topping the iPad off. I take this on all my overnight motorcycle camping trips.

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

    Rated 5 out of 5 stars

    Anker PowerCore III

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

    My family went on the train to Seward and coming home I used the battery charger I was given by my a friend for Christmas. It charged my phone but was extremely hot and I couldn’t turn it off.. My grandson had the Anker PowerCore and I ask him where he got it and when he said Best Buy I ask him for the info and the gave me the SKU number. So I went into Best Buy with a SKU number only for the Anker-PowerCore III 20K mAh USB-C Portable Battery Charger. I told the gal I didn’t know what I needed but here was the SKU and she took me right to the item.. Quick and easy.. Best Buy is great for all my technical needs.. I highly recommend this charger, it is very easy to use and something everyone should have if they travel with their electronics..

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

    Rated 5 out of 5 stars

    Portable chargers

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

    I bought this product fairly recently, and I am enjoying this product very slim, lightweight, and easy to use.

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

    Rated 5 out of 5 stars

    Portable Power 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 think Anker is a very good product. I wanted something to charge my phone, iPad, and MacBook when I am not close to power. This works! It is small and comes with a small bag to store it in. Really like this battery charger.

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

    Rated 5 out of 5 stars

    Love it

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    Posted . Owned for 9 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love it. Can charge two phones at once. Great especially if you are at a family gathering or for parties & need to charge phone without finding an outlet

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

    Rated 5 out of 5 stars

    Great charger

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

    So much lower and it charges quickly! Highly recommend for anything from phones to laptops. It provides our family of six all the power we need for a day on the road.

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

    Rated 5 out of 5 stars

    Good stuff

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

    Bought it on sale to replace an old one and does the job great! Charges fast and large battery im able to charge my phone multiple times on one charge.

    I would recommend this to a friend
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