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Customer Ratings & Reviews

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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

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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 21 Showing 401-420 of 1,402 reviews
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Great value!

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

    This product does an excellent job in keeping your phone charged multiple times. It takes a little while to get it back to full, but seems to fully charge your phone at least twice. It's a little bulky and heavy, but otherwise a great value.

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

    Rated 5 out of 5 stars

    Very Good Product

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

    Bought for my sister; she says she would give it ten stars and that it is the “Mercedes” of chargers. I am thankful she will now have something that is fast and reliable in an emergency.

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

    Rated 5 out of 5 stars

    Powerful

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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 is a top notch power bank. It charges my phone multiple times before needing to recharge. It is a little bulky but this is expected from such a good battery.

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

    Rated 5 out of 5 stars

    Survivor

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

    Has survived many years of travel and charging and discharging. At this point, the ports are getting a little old. If they have an update of this, go for it.

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

    Rated 5 out of 5 stars

    Straightforward battery bank

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

    No gimmicky led screen, small and compact enough for its capacity. The led indicator could get an brightness upgrade. Hard to see under bright light conditions.

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

    Rated 5 out of 5 stars

    Anker is the best

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

    I love Anker. I had a charger before and no doubt this power bank will be so useful for me and my family. Charges really fast and and the size is liekeanother cellphone.

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

    Rated 5 out of 5 stars

    Impressed

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

    I ordered 2 of these, one for my wife and one for myself. We both love these battery packs. Operation of it is easy and keeps our devices charged as long has the pack has a charge. Overall very happy with this purchase.

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

    Rated 5 out of 5 stars

    Nice and convenient charger

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

    This works great with powering my live streaming setup for baseball games… plug my camera and phone(sometimes iPad too). More than enough for double headers. USB and USB-C

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

    Rated 5 out of 5 stars

    Convenient insurance

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

    I purchased this to take with me on a trip so that when I’m away from a charging port I can charge my iPhone and my ipad. I’ve barely needed to use it, but in those rare moments, it’s nice insurance.

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

    Rated 5 out of 5 stars

    Worth every penny!

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

    Solid, charge last forever. Live streamed a 2.5 hour baseball game on my IPhone and when game was done, phone was fully charged and this still had 3/4 charge. Awesome.

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

    Rated 5 out of 5 stars

    Great For International Travel

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

    Convenient way to charge devices while traveling abroad. No worries concerning small devices like cell phones and tablets. Worked well with power converter/adapter.

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

    Rated 3 out of 5 stars

    Was Mehh... better options out there for the price

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

    A little overpriced in my honest opinion. Simply because this device still only charges output with a USB-A end and in today's age, you can easily find a USB-C output charger that will no doubt charge 3x as fast with half the cost of this portable charger. I found a different charger that did just that a month after buying this and have not even gone back to this charger since. In terms of the device, at 100% power, it gave me about 5 full charges on my iPhone 13 Pro Max at the time. But i do remember it took about an hour for it to just fully recharge itself when plugged in.

    No, I would not recommend this to a friend
  • Cons mentioned:
    Weight

    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.

    Lot of battery power, good value. you know you'll have enough power for few devices. Is as heavy as like holding 3 phones. Totally recommend if you want to have a backup in backpack.

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

    Rated 5 out of 5 stars

    Great charger

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

    I took this charger to Disney world fully charged and was able to recharge 2 iPhones with some battery life leftover on this charger. I would say its pretty powerful!

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

    Rated 5 out of 5 stars

    Great battery pack!

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

    Excellent battery pack. Recharged our phones during international travel quickly so we weren’t stressed about using our phones too much.

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

    Rated 5 out of 5 stars

    Dependable Power

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

    It works fine. I can charge my phone or tablet easily and quickly. This was a gift for my wife, so it's my second purchase of this product.

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

    Rated 5 out of 5 stars

    Love it

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

    I love this battery charger it’s very handy. When the battery on my cell phone gets low, I just connect it to the charger and whala, charging begins. I keep it in my handbag.

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

    Rated 5 out of 5 stars

    Best option for an inexpensive charger.

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

    There are a lot of options out there but we think this is the best value. It has a USB in/out port which means it will charge your device quickly and recharges quickly as well,

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

    Rated 5 out of 5 stars

    Great Battery Bank for the cost

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

    This was perfect for my traveling, and has been useful in day to day life as well. Battery life has been amazing and have had 0 issues

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

    Rated 5 out of 5 stars

    Reliable

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

    Great product - I got an Anker a few years back, and it has been excellent, especially when traveling a lot, so I got this as a gift for a loved one to enjoy as much as I do.

    I would recommend this to a friend