Black Friday is hereAlso, shop the 24-Hour Flash Sale.Shop now

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 1401 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 3 Showing 41-60 of 1,401 reviews
  • Pros mentioned:
    Charging speed, Portability

    Rated 5 out of 5 stars

    A Great Choice for Portable Charging!

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

    This charger is a really reliable, long-lasting option. Compact enough to fit in your pocket, but with a great charing capacity.

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

    Rated 4 out of 5 stars

    "Anker PowerCore 3: Your Reliable On-the-Go Chargi

    |
    |
    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    The Anker PowerCore 3 is a reliable portable charger that combines high capacity with fast charging capabilities. With multiple ports, it allows you to charge several devices simultaneously, making it perfect for on-the-go users. Its compact design ensures easy portability, and the durable build adds to its longevity. The inclusion of PowerIQ technology optimizes charging speeds for various devices. While it may lack some advanced features found in other models, its performance and affordability make it a solid choice for anyone needing reliable power.

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

    Rated 5 out of 5 stars

    Fast charging and holds 5 charges

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

    I can charge my phone 5 times before this battery gives out. It also charges my phone fully within 30 min which is faster than any car charger port or other battery packs. I take this thing with me everywhere cause you never know when you might need it. Slight weight to it, but still portable.

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

    Rated 5 out of 5 stars

    Excellent product

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

    Bought this last minute before our vacation. Charged our 3 phones throughout the day with spare juice at the end. Works great, especially the USB-C option. It’s only slightly bigger than a phone, a little heavy but expected since it has a larger capacity.

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

    Rated 4 out of 5 stars

    Slightly heavy but effective.

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

    This charger is somewhat heavier than expected, but I like to overall slim design. It charged up fairly quickly and provided charging on my smartphone within a reasonable time, and it didn't take up too much battery life.

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

    Rated 5 out of 5 stars

    Best power bank

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

    Best power banks out there. Anker is known for making good quality power banks and this one is no exception! It charges pretty quickly in about an hour or so and can charge your phone in my case an iPhone 13 3 different times to full battery! That is insane power for something so small! Also it is very reasonably priced there’s a lot of other power banks on the market for the same price point but the brand and the MAH of the bank is definitely what should be looked for and this one has it all!

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

    Rated 5 out of 5 stars

    This is One Fast and Powerful Charger

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

    This is a fantastic charger. After it's first initial charge via USB to my computer, it was able to rapidly recharge my cell phone three consecutive times. It probably could have gone a fourth but I hooked it back up to recharge. I like using it in my car to keep my phone charged while driving around. I am extremely happy. If there was any con traits, I'd probably mention that is is heavier than my last one, but I'll easily take the tradeoff.

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

    Rated 5 out of 5 stars

    Great charger

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

    I love its large capacity, and the fact that i can use my usb c cable to charge both my phone from this charger AND use the same cable to charge the power bank. This is something that is not common in a lot of batteries but this has it at a great price point. It's been 1 1/2 months and it still functions like new!

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Size
    Tech Insider Network Member

    Rated 5 out of 5 stars

    Great for Travel

    |
    Tech Insider Network Member
    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I took Anker PowerCore III on my last trip to Vegas and loved it. It had plenty of juice to keep me powered thru all my visit there. It fit neat on the side of my backpack. I recommend everyone to have one of this when on trips!

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

    Rated 5 out of 5 stars

    Charging Google Pixels

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

    Good, reliable charger. We own Pixels in our home (Pixel 3 and a Pixel 6) and it charges these devices rapidly. Great for portability. Best for those who are looking for someone to charge multiple devices as the charger is heavier than others. I cannot comment on just how much charge it holds but based upon my first couple of partial recharges (I seldom let a phone get down below 20%), it seems to be quite significant.

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

    Rated 5 out of 5 stars

    Anker - Portable Battery Charger

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

    Excellent portable battery charger. It is a must in every trip. It does fast charge my phone and can last multiple charges in one trip. Definitely a life saver.

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

    Rated 5 out of 5 stars

    Awesome Charge

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

    On a full charge, my family was able to take turns using this to charge all of our devices several times each on our 20+ Hour trip from Texas to California for vacation. This holds a pretty incredible amount for its slim design. Just overall convenient and serves its purpose for the price!

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

    Rated 5 out of 5 stars

    Worth the price

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

    I purchased this because I left on my way to work without a phone charger. This actually wasn’t much more than if I were to purchase a charging cord and wall plug. Plus I already had several of them at home. I’m glad that I did. This charged my phone a lot faster then the wall cord. It’s extremely sleek and can fit in my front pants pocket. And can charge your phone a few times before needing a recharge.

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

    Rated 5 out of 5 stars

    A Monolith of Power

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

    Does exactly what it's supposed to: it's a rechargeable battery with some USB ports. It does take awhile to charge, but that might be the adapter I was using. Otherwise it charged my OnePlus 7 Pro just fine. This strikes a good balance between capacity and physical weight, especially for traveling. Also it looks neat. Also also the little blue lights are pretty

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

    Rated 5 out of 5 stars

    Great Product - Just luv Anker products

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

    Just luv Anker products. Very well Built, Compact, Sleek Design, Fast Charging on both ports. Charge life left it sit for a week and still held a charge. If you want a well built product and one that does the job you can't go wrong with Anker products. Even works great with my Raspberry Pi 3 B+, just luv it... Definitely recommend don't go nowhere with out it anymore..

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

    Rated 5 out of 5 stars

    Easy to use

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

    Simple to use, thin and works good. Charge multiple items at one time.

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

    Rated 5 out of 5 stars

    It turned out to be amazing

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

    I really enjoyed the powerbank as it lets me charge on the move It’s a really good price for the capacity it provides Compared the other power banks it’s been really amazing in areas such as charging speed, as well as capacity to charge multiple devices

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

    Rated 5 out of 5 stars

    Durability and longevity

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

    I purchased this power bank in May of 2022 to travel overseas when I knew I would be taking alot of video on my phone, which I totally did. This power bank was phenomenal! It kept my phone charged on some long, 12-14 hour days under very strenuous use and high temps, with power to spare. I was glad I opted tor the 20 maH. Sometimes the available power outlets in the country I was in weren't always reliable and I couldn't get a good charge on the power bank overnight, so that it would have to rely on the charge from the night before... and it did! I was amazed how much juice this thing can hold. It's now been about 8 months since I bought it. I have traveled with it a few other times since then, and dropped it several times. It's built like a tank and keeps going, no perceivable loss in performance. Of course, it requires alot of time on a charger to fill up completely, but that's understandable, considering how long it lasts.

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

    Rated 5 out of 5 stars

    Portable charger for Android

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

    This battery is a life saver. It keeps a charge in very cold temperatures ( hocky rink/ ice skating rink), and is a fast charger for my Android. Very easy to use.

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

    Rated 5 out of 5 stars

    Phoneless to Phone

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

    I bought this product while visiting NYC. This portable charger was the perfect size to fit into my fanny bag. It was fast charging and maintained a charge for over 96 hours. I highly recommend this product.

    I would recommend this to a friend
Sponsored