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 26 Showing 501-520 of 1,403 reviews
  • Pros mentioned:
    Portability

    Rated 5 out of 5 stars

    Charger

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

    So far it works well for our needs with no electricity in the area. It feels solid, so I know it works well. I would recommend it.

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

    Rated 5 out of 5 stars

    Great Portable Charger

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

    So far the charger has done a great job at keeping its charge. I have been able to use it for multiple phone charges without having to recharge.

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

    Rated 5 out of 5 stars

    portable charger

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

    great for when your out and about can charge on the go without having to stop

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

    Rated 4 out of 5 stars

    Anklet power core III 20K

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

    One downside of the Anker is it just have lights of remaining battery life. I wish I had spent the extra money for one with percentage of battery life used. Otherwise it is good.

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

    Rated 5 out of 5 stars

    10/10

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

    Great little power bank. Get you a few charges on the go so you are never out. Great for a trip on the kids

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

    Rated 5 out of 5 stars

    Great Portable Charger

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

    I am in the military and I always take this bad boy out with me on long training events keeps my phone charged for up to a week and a half. This is the second one I own.

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

    Rated 4 out of 5 stars

    Great product- inexpensive price.

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

    This product holds a charge and recharges quickly. A plus is portable design that it is easy to carry in a purse or backpack. Comes with a carrying case where the cord can be held. Bonus that you can charge multiple items at once.

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

    Rated 5 out of 5 stars

    Power bank

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

    Very Happy with it works well its slim and holds good charge

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

    Rated 5 out of 5 stars

    Customer satisfaction.

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

    Enjoyed the durability and longevity of the power supply.

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

    Rated 5 out of 5 stars

    Excellent battery!!

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

    With the 2 out put options to charge, this battery is an excellent option to charge your cell phone/tablet.

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

    Rated 4 out of 5 stars

    Very useful!

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

    Worked really well! Charges faster when you charge 1 device at a time; worked well in the backcountry at the Grand Canyon, slightly slower charge due to the heat

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

    Rated 4 out of 5 stars

    Great power pack. Great to travel with

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

    Slender power pack that’s can easily be traveled with. Not bulky at all. Imwas able to keep phone charged while out traveling abroad,

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

    Rated 5 out of 5 stars

    Great power bank

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

    Great power bank so far it has saved me from running out of battery with phones, GoPro cameras and other devices.

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

    Rated 5 out of 5 stars

    Open box Anker Power Core III 20K

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

    This was my first experience buying an open box item and so far so go. It is heavy but I chose this model for the ability to charge multiple phones.

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

    Rated 5 out of 5 stars

    Best worldwide

    |
    |
    Posted . Owned for 8 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Best thing money can buy. It has lasted 6 months and over the entire world for me.

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

    Rated 5 out of 5 stars

    Great charger

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

    Amazing charger, charges phone extemeley quickly and takes all chargers

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

    Rated 5 out of 5 stars

    Good chargers

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

    This is my second Anker power core and I like it just as much as my original. They hold charge for a long time and are always ready to charge my items when needed.

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

    Rated 5 out of 5 stars

    Great quality

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

    Love how many times I can charge things with this at full chare I got a tablet my phone and a bluetooth speaker charged 3 times a piece before recharging the brick.

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

    Rated 5 out of 5 stars

    Great for many places

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

    Came in handy at the West Cancer Clinic. This is the first one I ever purchased.

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

    Rated 5 out of 5 stars

    Perfect Stocking Stuffer

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

    Great stocking stuffer, really can’t go wrong with a portable charger, especially for someone who travels a lot

    I would recommend this to a friend