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Customer Ratings & Reviews

Your price for this item is $39.99
The comparable value price is $49.99

Customer reviews

Rating 4.4 out of 5 stars with 165 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.4 out of 5 stars

  • Quality

    Rating 4.5 out of 5 stars

  • Ease of Use

    Rating 4.6 out of 5 stars

Pros mentioned filter

Cons mentioned filter

87%would recommend to a friend

Customers are saying

Customers praise the Ultimate Lithium 20,000 mAh power bank's impressive battery life, allowing for multiple full charges of their devices. The clear LCD display is also a highlight, providing convenient battery level tracking. Users find it easy to use and appreciate the fast-charging capabilities of the USB-C PD 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 8 Showing 141-160 of 165 reviews
  • Rated 5 out of 5 stars

    Great Idea

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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.

    Great Birthday Idea. Really cool item to have and very functional & sleek.

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

    Easy to carry for everywhere

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

    It’s a good and affordable. I like to recommend to all.

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

    Mr

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

    Working well so far only that not charging as fas as I wanted

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

    Battery pack

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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.

    Good I like the quality it’s hard sturdy and seems of good quality

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

    Battery pack

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

    I'm really glad I purchased this! Thanks for having it available!

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    Takes too long to charge

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

    Charge speed is not bad but recharging takes too long and not ideal if you are traveling and don't have time to wait for full charge

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

      Thank you for your feedback! We're glad to hear you're happy with the phone charging speed. We apologize, however, that recharging the power bank itself is taking longer than you'd like. The recharge time for a large-capacity battery like this depends heavily on the power adapter you use. For the fastest results, we recommend using a wall adapter that supports Power Delivery or Quick Charge 3.0 to reduce the time it takes to get a full charge.

      -- Energizer PowerPacks Service Team

  • Rated 5 out of 5 stars

    Battery pack

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

    I bought this as a birthday present for my brother. He doesn't have to worry about forgetting to charge his phone any longer.

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

    My energizer .

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    Posted . Owned for 5 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I enjoy the energizer. It is sturdy and well built .

    I would recommend this to a friend
  • Rated 3 out of 5 stars

    Energizer, portable battery 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 item did not charge my iPad fast enough because the water was too low. The unit worked, but not to my preference.

    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.(service@energizerpowerbanks.com)
      We will be glad to assist you.
      Thank you.

  • Pros mentioned:
    Charging speed

    Rated 2 out of 5 stars

    Battery bank

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

    It charges but I was looking for a magnetic mag safe charger If all you need is a battery bank this is great

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

      Thank you for your feedback! If you're specifically looking for a magnetic MagSafe charger, please let us know, and we can assist you further. For any questions or concerns, feel free to reach out to us at service@tennrich.com.

  • Rated 3 out of 5 stars

    Not What I Was Hoping For

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

    Device is slow to recharge. Doesn’t work as goodas I had hoped for.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Energizer Portable Battery Charger

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

    This Portable Battery Charger Power Bank was extremely bulky and heavy.

    No, I would not recommend this to a friend
  • Rated 1 out of 5 stars

    Not worth a penny

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

    Piece of junk. Less than a month of use and the lsd screen barely works and everytime i try to charge my phone wired my phone keeps shutting off.

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

      Hi user687775,
      We’re sorry to hear about the issues with your power bank. The LCD malfunction and charging interruptions are not normal and may indicate a defect. Please visit our support page for troubleshooting or to request a replacement:

      --Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    Defective

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

    Product was defective when i received it. The package was not new.

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

      We are very sorry to hear that you received a defective power bank in packaging that was not new. This is completely unacceptable, and we apologize for this disappointing experience. We want to help resolve this for you. Please visit our support page at https://support.energizerpowerpacks.com/ and fill out the form so our team can assist you with a warranty claim.-- Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    Stop working a week later with only one charge

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

    i literally had this charger for a week and use it ONCE and it stop working BESTBUY you will see me this week that is 3 items i brought the broke on me i kept this one because i thought it would be beneficial but then it stop and stuck on 180 i dont even know what that means i guess broken

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

      Dear WilliamC,

      We are truly sorry to hear that your power bank stopped working and is displaying an error code. This is not the quality we aim for. The best way for us to assist you is with a direct warranty claim. Please visit our support page at https://support.energizerpowerpacks.com/ and fill out the form so we can help.

      -- Energizer PowerPacks Service Team

  • Rated 2 out of 5 stars

    Didn’t enjoy the quality

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

    Not the greatest quality didn’t hold a charge and charged product too fast but didn’t charge phone

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

      Thanks for your feedback. We're sorry you experienced these issues. For assistance, please email service@tennrich.com with your order details and a description of the problem.

  • Rated 1 out of 5 stars

    Did not work

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

    This may be an unfair rating because I bought an open box item. The item was listed as an open box / excellent condition. I charged it for 3 days and when I went to use it, it only showed 10%. I returned it

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

      Dear ChrisG,

      Thank you for your feedback. We are very sorry to hear that the open-box power bank you purchased was defective and would not hold a charge, even after you tried charging it for three days. We appreciate you giving our product a chance and apologize that it failed to meet your expectations, as this is not the quality we strive for.

      -- Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    Stopped working in a month

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

    No longer will charge my phone. Charging the power bank and it is still stuck at 7%.

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

      Dear TiffN,

      We're so sorry to hear that your power bank stopped working after only a month and is stuck at 7%. This is definitely not the quality you should expect from our products, and we apologize for the frustration.

      Please visit our support page at https://support.energizerpowerpacks.com/ and fill out the form so our team can assist you directly with a replacement.

      -- Energizer PowerPacks Service Team

  • Rated 2 out of 5 stars

    Not sure if I like it

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

    This keeps turning off while charging a device. I have to keep turning it off and on.

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

      This is quite unusual. It could be due to a software glitch or a hardware issue. First, please try using a different charging cable or adapter to rule out compatibility problems. If the problem persists, it might be a fault with the power bank. Please provide the following information to our dedicated email service@tennrich.com

  • Rated 1 out of 5 stars

    Not a good pwer bank.

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

    I purchased the power bank about 1 month ago and it stoped working. It will not charge pass 6.

    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.(service@energizerpowerbanks.com)
      We will be glad to assist you.
      Thank you.