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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 12 Showing 221-240 of 1,402 reviews
  • Pros mentioned:
    Battery life, Charging speed

    Rated 5 out of 5 stars

    Recommend

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

    Portable lasts me a long time for it to be put back to charge, charge my phone like 4 times

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

    Rated 5 out of 5 stars

    Best portable 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 is perfect size and stays charged for days! Best one I’ve bought yet

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

    Rated 4 out of 5 stars

    It’s decent. Good not great

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

    Charges my iPhone 14 pro max about 2.5 times from 0-100% before dying. Chargers my phone fairly quick but charging the battery pack itself can take about 6hrs.

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

    Rated 5 out of 5 stars

    Extra large capacity can hold multiple charge

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

    + Long battery life - a little heavier than my iPhone 13 mini

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

    Rated 5 out of 5 stars

    Good purchase

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

    Irs a bit heavier than I’d prefer but that’s not a problem. It’s a compact and mighty unit.

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

    Rated 5 out of 5 stars

    Love it

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

    Love this. I bought to use for my iPad but I’ve used it more for my phone. It works great I’m very happy with this purchase

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

    Rated 5 out of 5 stars

    Very good power bank!!!

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

    It charges devices very fast and is easy to use on the go. This is a great power source, and I would recommend this to everyone!

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

    Rated 5 out of 5 stars

    Bang for your buck. Feel the power

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

    Great power pack. Bigger than I expected and great for the price. Takes a while to charge but thats expected with the size. Definitely recommended

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

    Rated 5 out of 5 stars

    Cant ask for anything better

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

    [Employee of bestbuy] Its great charges my phones well and small enough to fit in my pocket.

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

    Rated 5 out of 5 stars

    Back up battery

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

    Amazing back up battery at an amazing price point. Holds many hours of battery life and has a quick charge time.

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

    Rated 5 out of 5 stars

    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.

    Good product. Charges iphone quickly. It does take a long time to charge itself, but does last a while on a full charge.

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

    Wow!!!!

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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.

    Works very well. Buying one for my donnand his wife for his birthday for his next hunting season

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

    Rated 5 out of 5 stars

    Extra battery review

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

    A must have if your out all day and always need that extra battery juice. It's fast and its affordable.

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

    Rated 4 out of 5 stars

    Works Well but Inconvenient

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

    Worked well and charges rather quickly. Doesn't get too hot. The downside is you have to carry your cables everywhere with you so unless your camping in the woods, you could just plug it in?

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

    Rated 5 out of 5 stars

    Portable charger

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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 so awesome, charges fast, its a little heavy, but worth it.

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

    Rated 5 out of 5 stars

    Bang for your buck!

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

    Works as expected. No issues. Unless you’re going a week without a wall outlet it has plenty of capacity!

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

    Rated 5 out of 5 stars

    Great gadget for your travel needs

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

    A solid addition to your travel gadgets, this has been a life saver on long travel days, i use this for my phone, my switch, pretty much anything i can connect a USB C to. Amazing device that hold quite a bit of charge. Pick it up, specially if you can get a discount.

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

    Rated 5 out of 5 stars

    Phone Charger

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

    The charger exceeded my expectations. Worked perfectly during my flight to Hawaii

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

    Great Product..Easy to Carry on You

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

    I really like this portable charger for the price. If you're not dependant on frequently using a portable charger this is a great choice. If you frequently use a portable charger then you might want to go with a more expensive model that charges itself much faster. This power bank takes about 8 hours to fully charge.

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

    Rated 4 out of 5 stars

    Slightly heavy, but kept all my devices charged

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

    Long battery-life and charged my devices quickly over a 3 day backpacking trek. Only downside is it is a bit heavy for what I wanted to carry.

    I would recommend this to a friend