Year-End SaleEnds 1/1/26. Limited quantities. No rainchecks.

Skip to content
Main Content

Customer Ratings & Reviews

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

Customer reviews

Rating 4.7 out of 5 stars with 1403 reviews

Rating Filter

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 47 Showing 921-940 of 1,403 reviews
  • Rated 5 out of 5 stars

    It's a great deal for 20kmAh bank

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

    It does the job 100% while being used accordingly.

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

    Rated 5 out of 5 stars

    Great charger

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

    Great backup for when the power goes out. Holds a charge well.

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

    Rated 5 out of 5 stars

    Great buy

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

    Definitely recommend. Came in handy while on excursions.

    I would recommend this to a friend
  • Rated 4 out of 5 stars

    Excellent power bank but a little bulky.

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

    The Anker PowerCore III 20k Batter Charger is an excellent choice if you are looking for a somewhat slim but powerful on-the-go charge. It's build quality feels solid and its low profile makes it easy to slide into thin compartments. My only two complaints would be that it is still a little too large to fit comfortably into most people's pockets and that the ports do not have any silicone or rubber dust covers like some other devices in this price category have.

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

    Rated 4 out of 5 stars

    Great buy

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

    Do far it works great. It charged my phone with no problem. Howe we i just only used it 1 time

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

    Rated 5 out of 5 stars

    Big heavy battery

    |
    |
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Used it to charge my surface go while on vacation.

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

    Rated 5 out of 5 stars

    Great Product

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

    Great value. Easy to use. Very dependable. Durable,

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

    Rated 5 out of 5 stars

    Excellent

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

    I really recommend this item.Easy to use and fast.

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

    Rated 4 out of 5 stars

    Charger

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

    Took a long time for the first charge but it works well and I like the size

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

    Nice to have a back up

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

    This battery pack is awesome for emergency's, its very well made and easy to use .

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

    Rated 5 out of 5 stars

    Great and powerful power bank

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

    I lovey power bank. It's got a very long lasting charge.

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

    Rated 4 out of 5 stars

    Phone charger

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

    Good wireless charger, but it is so heavy to carry

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

    Rated 5 out of 5 stars

    Excellent product

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

    Excellent when having to charge your cell phone !!

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

    Rated 4 out of 5 stars

    Portable life for phone

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

    The battery life is good and is worth the price. The only back drop is heating and the battery life display.

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

    Good product, good price

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

    I gave it 5 stars because it was a gift to someone who called me when they received it and said, "what a great gift!!!" They had tried it out just before they called. I am sure they would have told me if the charger hadn't worked properly.

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

    Does the job

    |
    |
    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    It's a big battery that some people might have a hard time carrying around with them if you're looking for a slimmer and easier power bank to have on hand. But it gets the job done if you ever find yourself at 1% on your phone.

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

    Rated 5 out of 5 stars

    Fast charging

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

    Great charger - very powerful and recharges quickly

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

    Reliable products

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

    I've been impressed with most of the Anker products I have tried, especially the portable battery backups. I like this one quite a bit, but in comparing it to similar sized earlier versions of this product that don't have wireless charging

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

    Rated 5 out of 5 stars

    Battery back up powerhouse

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

    We needed back up power for our phones . It has lots of power for both our phones . Easy to use I recommend it if you need to power back up more than one device

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

    Anker Quality

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

    As usual, Anker portable battery chargers are dependable and reliable. Although their prices have increased (probably due to demand and brand name) their products have good value. The PowerCore III will charge three flagship phones from dead to 100% and a Galaxy Tab S6 from dead to 100% with lots of room to spare.

    I would recommend this to a friend