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Customer Ratings & Reviews

$49.99

Customer reviews

Rating 4.4 out of 5 stars with 184 reviews

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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

88%would recommend to a friend

Customers are saying

Customers enjoy the Ultimate Lithium power bank for its fast charging speed, especially the wireless charging feature, and long battery life. Many appreciate its portability and overall performance, finding the LCD display helpful for tracking battery life. While the size and port count are also seen as positives, some customers find the weight to be a drawback. The price offers great peace of mind.

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 9 Showing 161-180 of 184 reviews
  • 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 2 out of 5 stars

    Unreliable.

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

    Works well sometimes.. Sometimes this will maintain its charge and keep your devices charged. Other times it runs out of battery seemingly for unknown reasons instantly. Perhaps I got a defective one but it still works... sometimes.

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

      Hi AGT2025,
      Thank you for sharing this. Please try a full battery reset by completely discharging the power bank until it turns off, then recharge it to 100% without interruption. This helps recalibrate the internal battery management system, which can sometimes misread capacity and cause sudden drops.
      If the issue continues after this step, visit https://support.energizerpowerpacks.com/ for further assistance or replacement.
      --Energizer PowerPacks Service Team

  • 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

    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 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

    Wireless Power bank

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

    Not good product it’s broken it’s broke in storage it’s not drop or any thing damage but broke while I see for use so it’s lost my value

    No, I would not recommend this to a friend
    • Brand response from Energizer PowerPacks Service Team
      Posted .

      Hi TulasaN,
      We’re sorry to hear about your experience. Please contact us through our support page so we can help you directly:
      https://support.energizerpowerpacks.com/

  • Rated 1 out of 5 stars

    Horrible charger

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

    The charger that came with the accessory is confusing to use and I can’t figure out how to use it

    No, I would not recommend this to a friend
    • Brand response from Energizer PowerPacks Service Team
      Posted .

      Hi Alia,
      Sorry the charger feels confusing to use. This model has multiple ports and wireless charging options, so it can take a moment to get familiar with how each output works. If anything seems unclear or the unit isn’t responding as expected, our support team can walk you through the setup or help check the device:
      https://support.energizerpowerpacks.com/

  • 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

    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 your experience. Please contact us through our support page so we can help you directly:
      https://support.energizerpowerpacks.com/

  • 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

    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 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
    • Brand response from Energizer PowerPacks Service Team
      Posted .

      Hi GlenAllenGuy,
      I’m sorry this power bank felt too bulky and heavy for your needs. Its larger capacity does make it heavier than smaller models, but your feedback is important and helps us improve future designs.

  • 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 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

    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 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.

  • Rated 1 out of 5 stars

    Not Recommended

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

    Quality is horrible. Had it less than a month before it stopped working.

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

      Dear Customer,
      We're sorry for the problem. As it's under warranty, please send the needed info to service@tennrich.com for a replacement. Thanks for your understanding.
      Energizer Power Bank Service Team