Appliances Memorial Day SaleFree delivery. Ends 6/3. Terms apply.Shop now

Skip to contentGo to Product Search
Main Content

Customer Ratings & Reviews

No content
  • Front. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 1. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 11. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 12. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 13. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 14. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 15. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 16. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 17. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 18. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 19. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 20. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Alt View 21. Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black.
  • Energizer 20,000mAh Ultra-Slim video 1 minutes 15 seconds

Energizer - MAX 20,000mAh High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

Model:
UE20044
SKU:
6412338
Highly rated by customers for:
Loading...

Customer reviews

Rating 4.4 out of 5 stars with 2516 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.4 out of 5 stars

  • Quality

    Rating 4.4 out of 5 stars

  • Ease of Use

    Rating 4.5 out of 5 stars

Pros mentioned filter

Cons mentioned filter

86%would recommend to a friend

Customers are saying

Customers often highlight the long battery life and compact size of the MAX 15,000mAh portable charger as key strengths, also praising its ease of use and lightweight design. Positive feedback also mentions the charger's competitive price and reliable performance. However, some users reported compatibility issues and problems with the USB-C port.

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 103 Showing 2,041-2,060 of 2,516 reviews

  • Portable charger

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

    Great product, need this for camping and should be a great. Would highly recommend ordering.

    I would recommend this to a friend

  • Sonjamomma

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

    This is a must have if you need to charged your phone right away! It will do the job for you.

    This review is from Energizer - MAX 5,000mAh Ultra-Slim, High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Good tech

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

    Good reliable piece of technology convenient and sturdy highly recommended

    This review is from Energizer - MAX 15,000mAh Ultra-Slim High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Great charger

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

    Great compact charger. Gets the job done. Worth buying

    This review is from Energizer - MAX 10,000mAh Ultra-Slim High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Great portable charger.

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

    Exactly what I expected the item to be. Works exactly as I imagined.

    This review is from Energizer - MAX 5,000mAh Ultra-Slim, High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Power pack

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

    Great price for such a powerful device. My son uses it to charge his switch

    I would recommend this to a friend

  • Charger

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

    Purchase as a gift for my sister since her phone is always running low. Thank me later

    This review is from Energizer - MAX 10,000mAh Ultra-Slim High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Good Option

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

    Purchased as a gift for my daughter. I like that there are a couple of usb outlets on the battery.

    This review is from Energizer - MAX 10,000mAh Ultra-Slim High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Great charging block

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

    This a great charging block. Great quality. Would highly recommend to anyone.

    This review is from Energizer - MAX 10,000mAh Ultra-Slim High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Good Value

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

    Works as described. I use it to keep my phone alive when it starts to run out of battery.

    This review is from Energizer - MAX 5,000mAh Ultra-Slim, High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Great price Great charger ! I

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

    Great price Great charger ! I bought this charger for my son Pete for Christmas.. He Loves it !

    This review is from Energizer - MAX 5,000mAh Ultra-Slim, High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Portable charger

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

    Its GOOD quality. And it works good i really RECOMEND it

    This review is from Energizer - MAX 5,000mAh Ultra-Slim, High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Just in case

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

    Had a power outage which led us to buying this. Have had no need yet but I'm sure it is fine.

    This review is from Energizer - MAX 10,000mAh Ultra-Slim High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Powerful power bank

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

    Best power bank. Got in thanksgiving deal best deal

    This review is from Energizer - MAX 5,000mAh Ultra-Slim, High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Review

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

    My daughter is very happy. She backed up alot of stuff off her computer

    This review is from Energizer - MAX 15,000mAh Ultra-Slim High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Good product

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

    Nice portable just a bit thicker and heavier than I expected

    I would recommend this to a friend

  • Happy

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

    Works great!! I absolutely love this charger. Great service.

    I would recommend this to a friend

  • Simple gift idea.

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

    Great gift for my uncle. His phone is always out of charge.

    This review is from Energizer - MAX 5,000mAh Ultra-Slim, High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Great buy

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

    Great value love being able to walk into store and view product with customer service.

    This review is from Energizer - MAX 15,000mAh Ultra-Slim High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend

  • Portable charger

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

    It charges great. I just wish it was more light weight.

    This review is from Energizer - MAX 15,000mAh Ultra-Slim High Speed Universal Portable Charger for Apple, Android, Google, Samsung & USB Enabled Devices - Black

    I would recommend this to a friend
Page 103, Showing 2,041-2,060 of 2,516 reviews
Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada
AccessibilityTerms & ConditionsPrivacyInterest-Based AdsState Privacy RightsHealth Data PrivacyDo Not Sell/Share My Personal InformationLimit Use of My Sensitive Personal InformationTargeted Advertising Opt OutCA Supply Chain Transparency Act
In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.