Skip to contentGo to Product SearchGo to Footer
Main Content

Customer Ratings & Reviews

$29.99

Customer reviews

Rating 4.7 out of 5 stars with 379 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.7 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 often highlight the MAX 20,000mAh power bank's fast charging speed and impressive battery life. Its overall performance and portability are also appreciated by users. However, some customers find the power bank to be heavier and larger than expected.

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 2 Showing 21-40 of 379 reviews
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    Great battery pack

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

    Very happy with this product works great on my daughter's tablet and laptop

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

    Rated 5 out of 5 stars

    Power bank

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

    It’s working great and charged my phone 4 times that’s awesome.

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

    Rated 5 out of 5 stars

    Very useful for travel

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

    Very good powerbank. Very useful during travel. My whole family loves it.

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

    Rated 4 out of 5 stars

    Oilman

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

    Id used it in the oilfield in thr west and east. Quick. Charge

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

    Rated 5 out of 5 stars

    Keeps going and going

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

    Its bulky but i love the fact when im out and about i never have to worry about charging my phone.

    I would recommend this to a friend
  • Pros mentioned:
    Overall performance

    Rated 5 out of 5 stars

    Jc

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

    Very nice work gooooooooooooooooooooooddddddddddddddd

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

    Rated 5 out of 5 stars

    Very good product

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

    Excellent product will recommend for convenience of use and portability.

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

    Great versatility

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

    I love this power bank because it is a great mix of storage capacity and mobility. It can charge your phone or tablet multiple times but isn’t as bulky as larger power banks. It is also great because it comes pre charged!

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

    Energizer battery charger

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

    Looks good so far. As others have mentioned the charger arrives with 88% charge and doesn't charge higher initially. I have not yet drained the power as reported by others to see if it will fully charge.

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

    Best Buy's best buy

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

    Best buy hit it out of the park with this one! Great buy and best in class too! Thanks for the lightning fast shipping and the quality and the Great price.

    No, I would not recommend this to a friend
    • Brand response from Jamal Chen
      Posted .

      We are thrilled to know that you are so happy with your purchase. Your satisfaction is our top priority. Thank you for your kind words and we look forward to serving you again in the future.

  • Rated 5 out of 5 stars

    Energy backup

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

    Excellent to use for everything iPhone laptops or any mobile phone

    I would recommend this to a friend
  • Rated 2 out of 5 stars

    Steer clear

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

    USB-a port is off kilter with case and cannot use. Not sure if this was a return or just poor QC but the case also is scratched up. About the size of two modern cell phones stacked, convenient but wish it was functional. Glad I only paid $13 on Black Friday and not full price

    No, I would not recommend this to a friend
    • Brand response from Jamal Chen
      Posted .

      Dear valued customer,
      Thank you for the comment.
      We apologize for the unsatisfactory user experience we have caused you.
      If you have any other questions about the product,
      please feel free to contact us.([email protected])
      We will be glad to assist you.
      Thank you.

  • Pros mentioned:
    Capacity, Charging speed, Overall performance
    Best Buy Employee

    Rated 5 out of 5 stars

    Reliable Power On the Go

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

    I bought this for myself and I love it. The Energizer Max 20,000mAh power bank has been extremely reliable. It holds plenty of charge and easily keeps my phone and other devices powered throughout the day. The three ports are convenient, especially when charging multiple devices at once, and the USB-C support makes recharging fast and easy. It feels solid and well built, delivers consistent power, and is great for travel or everyday use. If you need a dependable, high-capacity power bank that just works, this one gets the job done.

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

    Rated 5 out of 5 stars

    Perfect Power Bank for Everyday Use!

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

    I’ve been using the Energizer Max 20000mAh Power Bank for a few weeks now, and it’s been an absolute lifesaver! It charges my phone, tablet, and even my wireless earbuds at the same time with no problem. The 15W USB-C output is fast enough to get my phone from 20% to 80% in less than an hour. The battery capacity is amazing — I can easily get 4–5 full phone charges before needing to recharge the power bank itself. It’s a bit on the heavier side (as expected for 20,000mAh), but still very compact and easy to carry in my backpack. The design feels solid, premium, and durable, with clear LED indicators that make it easy to see the remaining charge. I also like that it supports both USB-A and USB-C ports, which makes it super versatile. Overall, this Energizer power bank is powerful, reliable, and worth every penny. Perfect for travel, work, or emergencies. Definitely recommend it to anyone who needs real portable power!

    I would recommend this to a friend
    • Brand response from Jamal Chen
      Posted .

      Hi ShahinM,
      We’re thrilled to hear how well the power bank is working for you! Your review highlights exactly what we designed it for—versatile, fast charging with long-lasting power. It’s great to know it’s keeping up with your daily devices and travel needs. Thanks for the recommendation!
      --Energizer PowerPacks Service Team

  • Pros mentioned:
    Battery life, Charging speed, Portability

    Rated 5 out of 5 stars

    Happy Customer

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

    The portable charger I recently tried has been a game-changer for my on-the-go lifestyle. With a sleek design and lightweight build, it fits easily in my bag. The 20,000mAh capacity provides multiple charges for my devices, ensuring I never run out of battery during long days. The dual USB ports allow me to charge two devices simultaneously, which is incredibly convenient. It also features fast charging technology, reducing downtime significantly. Overall, this portable charger is reliable, efficient, and a must-have for anyone needing extra power while traveling or out and about!

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

    Rated 5 out of 5 stars

    Great power bank

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

    I’m very happy with this power bank. The 20,000mAh capacity easily lasts multiple charges, and the LCD screen is super helpful for seeing the exact battery level. It charges my phone quickly and having multiple ports makes it convenient to charge more than one device at the same time. It feels solid and well-made, and it’s been great for travel and everyday use. Definitely a reliable and high-quality power bank.

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

    Rated 5 out of 5 stars

    Charges for literal days

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

    We took this with us on a two week trip through London and Paris, and while it takes a few hours to fully charge up to full because of it's sheer capacity, it will in turn last for such a long time, which is highly necessary when traveling abroad and power sources aren't always going to be guaranteed where you're going to. I kept this in my front-body bag and it worked like a dream whenever my phone starting getting tapped out from using maps/GPS a lot. The other factor to keep in mind is that it is decently heavy, though if you have a small enough bag and you're not carrying too much else around with you it's not that big of a deal to me at least, but I have seen other reviews that also mentioned that. To me the higher capacity of the battery outweighs the minor inconvenience of *carrying something a little bit heavier than your typical tablet-sized phone.*

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

    Rated 5 out of 5 stars

    Workhorse of a charger

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

    I bought a couple of these for a family trip, and they are workhorses that did what they were supposed to do. This battery has hours of capacity and is very reasonably priced. I purchased it for the value and was not disappointed. Be aware that these are bulky and kinda heavy, but you can charge a phone several times (3 or 4?) if this thing is fully charged. I think it's good.

    I would recommend this to a friend
    • Brand response from Jamal Chen
      Posted .

      Hi Ihearfootstepsnow
      Thanks for the detailed review! We're glad the MAX 20,000mAh power banks delivered solid performance during your family trip. Their high capacity and multi-port design make them true workhorses — even if they’re a bit bulky, they’re built to keep your devices powered for hours. Your feedback on value and reliability means a lot!
      --Energizer PowerPacks Service Team

  • Pros mentioned:
    Capacity, Charging speed

    Rated 5 out of 5 stars

    Tough, reliable, functional, and on the heavy side

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

    Thie portable charger seems to have the rated capacity (unlike some others) and charges my devices quickly with a couple of port options (USB-A and USB-C). Even when cold it seems to work great. My only complaint would be the weight of this thing. It feels like a brick. It is great for the car, but I have another 20k mAh charger that is noticeably lighter that I carry in my backpack. To be fair, the lighter charger doesn't seem to have the same capacity this one does, but the weight does make a difference for me.

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

    Rated 5 out of 5 stars

    Big Battery Charger

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

    I did not know it would be bigger and heavy than a other chargers, But it works well.

    I would recommend this to a friend
Sponsored