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Customer Ratings & Reviews

$14.99

Customer reviews

Rating 4.4 out of 5 stars with 264 reviews

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  • Value

    Rating 4.5 out of 5 stars

  • Quality

    Rating 4.4 out of 5 stars

  • Ease of Use

    Rating 4.6 out of 5 stars

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85%would recommend to a friend

Customers are saying

Customers often highlight the MAX 5,000mAh portable battery charger for its portability and overall performance with heated clothing. Many appreciate its charging speed and battery life, as well as its convenient size and light weight. The multiple ports and helpful display are also valued features.

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 13 Showing 241-260 of 264 reviews
  • Rated 2 out of 5 stars

    Battery pack

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

    Not what i expected. And it takes too long to charge so ive only used it once

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

      Sorry to hear the charging speed didn’t meet your expectations. This model is designed for compact portability, but charging time can vary depending on the adapter used and the device being charged. If the performance seems unusually slow or inconsistent, we’d recommend visiting our support page for help or a possible replacement: https://support.energizerpowerpacks.com/

  • Rated 3 out of 5 stars

    Just OK

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

    It is just ok. It takes too long to change my devices.

    No, I would not recommend this to a friend
  • Rated 2 out of 5 stars

    So So

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

    It charged my phone but not completely. My phone was at 25% when I started and at 87% when the bank ran out of power. I'm returning it.

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

      Dear JodiW,

      We're sorry to hear that the power bank didn't fully charge your phone and that you're returning the product. We understand your frustration.

      The reason it couldn't fully charge your phone is due to a normal physical phenomenon called energy conversion loss. When energy is transferred from the power bank to your phone, some of it is naturally lost as heat. Because of this, a 5,000mAh power bank won't provide a complete 5,000mAh charge to your phone's battery.

      -- Energizer PowerPacks Service Team

  • Rated 2 out of 5 stars

    Energizer power bank

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

    This Energizer Power bank is not fast charging. It took 30 minutes to charge an android phone and it was completely drained!!

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

      Dear DANIELN,

      Thank you for your feedback. We understand your frustration when the power bank didn't meet your fast-charging expectations.

      This power bank's 15W output is considered a standard charging speed, not a fast-charging one. Additionally, based on the power bank's capacity, draining it completely in about 30 minutes is a normal and expected timeframe for a full charge to your device. The product is functioning as intended, but we apologize for any confusion regarding its charging speed.

      -- Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    terrible

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

    The worked one time and then died. Bought it for a trip. It worked great for one day. Since, it will say it has 100 battery but will only charge for a few minutes before turning off.

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

      Hi AEI04,
      Sorry to hear the power bank stopped working after just one use. That’s definitely not the experience we want for you. Please contact our support team for troubleshooting or a possible replacement:

  • Rated 1 out of 5 stars

    terrib;le

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

    well i chrged it up, used it once on mymotorola razer and it wouldnt work again. i had to return it, it said it has to on the numbers for charging, unless i held onto it numbers never showed, wouldnt echare its self

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

      Hi CynthiaC,
      We’re sorry the power bank didn’t meet expectations and appreciate you sharing your experience. It sounds like the unit may have had a display or charging fault, and we understand how frustrating that can be—especially when it fails after just one use.
      Since you've already returned the product, we respect your decision and apologize for the inconvenience caused.
      --Energizer PowerPacks Service Team

  • Rated 2 out of 5 stars

    Thus doesn't work at all

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

    Save your money don't this portable charger doesn't work at all

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

      Dear Maemaee,

      We're so sorry to hear that your portable charger is not working. This is not the experience we want you to have with our products. We want to make this right 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 replacement or refund.

      -- Energizer PowerPacks Service Team

  • Rated 2 out of 5 stars

    Bigger is better

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

    Disappointment. Its small but only charges in one slot, has a lack of communicating ability and ears its own power.

    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 2 out of 5 stars

    ok not great

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

    affordable but weak, i bought it for my phones battery problem

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

      We're sorry to hear that the power bank did not meet your expectations. Due to power conversion loss, a 5,000mAh power bank is often unable to provide a full charge for a modern smartphone. This is a common characteristic of power banks this size. If you are experiencing any other issues with the product, we'd be happy to help. Please visit our support page at https://support.energizerpowerpacks.com/ and fill out the form so our team can assist you.-- Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    Energizer

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

    This battery pack doesn't hold charge well and it gets warm too fast

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

    Doesn’t work for me

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

    Doesn’t work for me. I tried charging it and it still doesn’t change any of my devices. Then it’s slow

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

      Hi Nicole,
      We’re sorry the power bank isn’t working as expected. If it doesn’t charge your devices and seems slow, it may be defective. Please visit our support page for troubleshooting or to request a replacement:

      --Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    Thumbs down

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

    The bank doesn’t last long. I plug it into a hello watch 3 and it last two days. I have a cheaper 4000mah bank that i plug into the watch and it last about 14 days. I figured the name brand would be better in this case, not so.

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

      Thank you for your feedback. Battery performance depends on multiple factors, including power efficiency, output regulation, and device compatibility. We’d be happy to look into this further—please contact us at service@tennrich.com for assistance.

  • Rated 2 out of 5 stars

    Nice feature to see how much juice is left

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

    Decently powerful & can see to make sure it is fully charged before trips

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

      Dear Customer,
      This indicates that you are concerned about the power capacity and charging status of the power bank before your trips. Energizer power banks are designed to provide reliable power. To ensure it is fully charged, you can connect it to a suitable charger and keep it charging until the indicator shows a full charge.
      Energizer Power Bank
      Service Team

  • Rated 1 out of 5 stars

    Don't bother

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

    Turned it on... went from 88% to 57% in 30bseconds... tried to charge it and never charged.. what sucks is that when i took it back i wasn't even able to get an exchange.

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

      Dear VeeGee,

      We are very sorry to hear about your experience. The rapid drop in battery life and the inability to recharge are clear signs of a defective unit, and we understand your frustration, especially after being unable to get an exchange. We want to help resolve this for you directly. Please visit our support page at https://support.energizerpowerpacks.com/ and fill out the form so we can assist you with a warranty claim.

      -- Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    not worth it

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

    Does not hold charge, overheats quickly and unstable

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

      Hi TanRista,
      We’re sorry to hear about the issues you experienced with your power bank. Overheating and failure to hold a charge are not normal and may indicate a defective unit. Please visit our support page for assistance or a possible replacement:

      --Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    I’m returning

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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 inexpensive charging port to go on a cruise. I don’t actually like it it dies and loses charge very quickly.

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

      Dear SemajC,
      We're very sorry to hear that the power bank you purchased for your cruise was faulty and lost its charge so quickly. We understand your frustration and apologize that it failed to meet your needs.
      -- Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    Not a good product

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

    I am not even getting full charge of mobile. I dont see it as worth product.

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

      Hi VijaykumarJ,
      We’re sorry to hear the power bank isn’t delivering a full charge as expected. This model is designed to support moderate daily use, but if you're consistently getting less than a full charge, it could indicate a battery degradation issue or a technical fault.
      Even though it's a compact 5,000mAh unit, it should still provide at least one full charge for most smartphones. We recommend reaching out to our support team at https://support.energizerpowerpacks.com/ so we can help diagnose the issue or explore a solution.
      --Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    NormTv

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

    It died, bought it open box It is no more Time to test total rewards Don’t ever bother to call City Bank phone is a joke Everything I own may go back Because City Bank is lousy. The worst ever

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

      Dear Customer,
      We're sorry to hear about your dissatisfaction and the issues you've encountered. However, our company is Energizer Power Bank and we can only assist you with matters related to our power bank products. It seems your complaint is regarding City Bank and not within our purview.
      Energizer Power Bank
      Service Team

  • Rated 1 out of 5 stars

    Sucks

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

    Stopped working it wont charge and it doesn't charge my 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

    Not powerful enough

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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.

    Poor thing can’t charge a 16 plus not even a percent.

    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.