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Customer Ratings & Reviews

$19.99

Customer reviews

Rating 4.5 out of 5 stars with 565 reviews

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Rating by feature

  • Value

    Rating 4.7 out of 5 stars

  • Quality

    Rating 4.6 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

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90%would recommend to a friend

Customers are saying

Customers admire the product's excellent portability, finding it very convenient and easy to pack due to its great size and lightweight design. They also appreciate its fast charging speed, which performs comparably to other wall-plugging fast chargers, and its outstanding battery life, especially considering its low cost. Overall, customers are pleased with its performance and the impressive price-to-quality ratio.

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 565 reviews
  • Rated 5 out of 5 stars

    This Energizer Power Bank Is Nice!

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

    This is a very nice power bank. I was a little skeptical at first because of some off the reviews about it. I have used it to charge my Lava Genie and my Pixel phone. I was really impressed with how much power was left after charging my phone from 1% to 100%. I love being able to push a button to view how much remaining power is left. It has two USB-C outs and one USB-A out. I'm hoping this will last a long time.

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

      Hi Bill,
      Thanks for giving it a chance—we’re glad it won you over! It’s great to hear the power bank handled your Lava Genie and Pixel phone with ease, and that the remaining power display added peace of mind. The dual USB-C and single USB-A ports are designed for flexibility, and we hope it continues to serve you well for a long time to come.
      --Energizer PowerPacks Service Team

  • Pros mentioned:
    Portability

    Rated 5 out of 5 stars

    Excellent product

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

    Very practical for any place, lightweight but with high quality, ideal for going out without worrying about running out of battery on your cell phone.

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

    Great usability!

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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.

    I have a number of power banks and this one gets the most use. It is a great combo of lightweight and functional. I also love the display so you know exactly how charged it is

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

    Rated 4 out of 5 stars

    Good price

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

    Great battery pack charges phones multiple times and fast

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

    Rated 4 out of 5 stars

    Charger

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

    It has a few scratches but it works wellfffffffffffffff

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

    Rated 5 out of 5 stars

    Purchase

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

    Very great product and Purchase. I buy a lot of things from here

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

      We're delighted that you had a wonderful experience with our product and your purchase. We appreciate your continued support and look forward to meeting your needs in the future.

  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Get A great battery pack, especially for the price

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

    A great battery pack, it last a long time and works great

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

    Rated 5 out of 5 stars

    Fast

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

    Works great and is really fast to charge the phone.

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

    One failed unit and website support is insecure

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

    The power bank has failed and just blinks "188" -- it was just displaying a garbled number before. I have not found a way to reset it. I wish to contact support but their website is not secure! When it worked (and I still have one working of two), it's a pretty handy power bank and I got it for a good price on sale. Nothing too fancy in terms of charge speed in or out, but the LCD to tell you the charge percentage is nice. I'd like a way to get support where I don't have to type in my whole address through an unencrypted website though. I'm pretty sure this is just bad luck but I don't have a way to rectify the issue.

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

      We’re very sorry to hear one of your units failed and that you encountered concerns with the website security. The "188" blinking typically indicates an internal error. Unfortunately, there is no reset function for this issue, but we’re here to help.

      To avoid entering personal details through a form, you can email us directly at service@tennrich.com. Please include your product model, serial number, proof of purchase, and a brief description or photo/video of the issue. We’ll take care of the rest and assist you with a warranty replacement if applicable.

      Thank you for your honest feedback — we’ll also pass your website security concern to our team for review.

  • Rated 2 out of 5 stars

    Analyze the stats on rhe package very closely.

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

    Product performed as described, but be AWARE: there is NO fast charging. Please read package i promise you wont regret it. Second major issue is, even with oackaging claiming the usb-c is an in/out (which means you should have the ability to charge the bank with a usb c to usb c cable connected to higher speeds block. This does NOT work. The only way you can charge is : you must use the cable that came with the bank. Insert usb c end of cable into charger rhan the orher end of rhe cord is a usb A which you must plug into a wall charger with A compat. Despite the bank taking 3 hrs ro charge, it did work for about 2 weeks; resulting in chargikg fine, but when plugged it into my phone about 30 sec later it would display a warning of very slow charging. About 3 days later it failed to charge at all.

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

      Hi MikeK,
      Sorry for the trouble you experienced with this power bank. Based on the product specifications, this model provides a maximum total output of 15W, so charging speeds will be standard rather than fast‑charge levels. The USB‑C1 port is designed for both input and output, and the unit can be recharged through that port using a USB‑C to USB‑A cable connected to a USB AC adapter.
      Please reach out through our support page so we can assist you with inspection or replacement:
      https://support.energizerpowerpacks.com/

  • Rated 5 out of 5 stars

    Battery

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

    This energizer is great. I have two of them for a back up just in case. Also I have use this on my heated vest and it’s feels good.

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

    Great Value, Very Convenient

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

    Wife purchased this for a road trip to keep electronics charged up. Worked great!

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

    Perfect

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

    Love it I would recommend to anyone about this product. Comes with cord as well.

    I would recommend this to a friend
  • Pros mentioned:
    Charging speed, Overall performance, Portability

    Rated 5 out of 5 stars

    Compact Powerhouse Delivers Reliable Performance

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

    Title: Compact Powerhouse That Delivers Reliable Performance The Energizer MAX 10,000mAh Power Bank is the perfect balance of portability and power. Despite its compact size, it provides plenty of battery capacity to keep my smartphone and other devices charged throughout the day. The LCD display is extremely helpful, showing the exact remaining battery percentage at a glance. Charging speeds are fast, reliable, and consistent, while the lightweight design makes it easy to carry in a pocket, backpack, or travel bag. The build quality feels solid and durable, and the multiple charging options add convenience for everyday use. Whether traveling, working, or handling emergencies, this power bank performs exactly as expected. I highly recommend it to anyone looking for dependable portable power in a compact package. Excellent value, excellent performance, and 100% recommended! ★★★★★

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

    Rated 1 out of 5 stars

    Worked great for up to 4 months

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    Posted . Owned for 6 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Worked great for about 4 months. I think the battery brick itself gone bad out the blue. I have another later model that I ordered from Amazon and it’s working still. Would love to give this another chance but it’s barely been 6 months and mine stopped working.

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

      Hi EliC,
      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

    Deteriorating fast!

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

    Only charging to 16% of capacity after about 30 cycles of use. Very disappointing! Also, the on/off button is too easily pushed unintentionally while the power bank is in a pocket or a bag.

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

      Dear Customer,
      We take this issue very seriously and apologize for the problem you've experienced. We want to help resolve this for you. Please visit our support page at **[https://support.energizerpowerpacks.com/](https://support.energizerpowerpacks.com/)** and fill out the form so our team can provide you with support. -- Energizer PowerPacks Service Team

  • Rated 1 out of 5 stars

    GARBAGE- fails after one charge

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

    Was able to charge it ONE TIME. Used it the full charge then not able to charge again. GARBAGE. Complete waste of $$.

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

      Hi CMZ3,
      Sorry the power bank failed after just one use — that’s definitely not the experience we aim to deliver. If you purchased it only a few days ago, you can return it directly at the store. If you're still within the return window and prefer support, feel free to reach out at https://support.energizerpowerpacks.com/, and we’ll help troubleshoot or arrange a replacement.
      --Energizer PowerPacks Service Team

  • Pros mentioned:
    Battery life, Charging speed, Overall performance

    Rated 5 out of 5 stars

    Its good for $10

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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.

    This portable battery has truly exceeded my expectations with its impressive performance. The sleek and compact design makes it incredibly convenient to carry around wherever I go. I found the fast-charging capabilities to be a game-changer, saving me valuable time and ensuring I stay connected. Furthermore, the long-lasting battery life has consistently kept my devices powered throughout the day. Overall, this portable battery is an excellent investment for anyone seeking reliable and efficient mobile charging.

    I would recommend this to a friend
  • Pros mentioned:
    Charging speed, Overall performance, Portability

    Rated 5 out of 5 stars

    I've been using the Energizer MAX 10,000mAh power

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

    I've been using the Energizer MAX 10,000mAh power bank for a while now, and it's been working really well for me. The 10,000mAh capacity gives me plenty of juice to recharge my smartphone multiple times throughout the day, which is perfect for travel or long days out. The 15W USB-C charging is a nice feature - it's fast enough to get my devices powered up without waiting forever. I really appreciate having 3 ports available, so I can charge multiple devices at once when needed. Whether it's my phone, earbuds, or other accessories, this power bank handles it all. One of my favorite features is the LCD screen. It's super convenient to see exactly how much battery life is left rather than guessing based on LED lights. This helps me plan when I need to recharge the power bank itself. Build quality feels solid and reliable, which is what I expect from Energizer. It's compact enough to toss in my bag without adding too much bulk or weight. Overall, this is a dependable power bank that does exactly what I need it to do. If you're looking for a trustworthy portable charger with good capacity and multiple ports, I'd definitely recommend giving this one a try.

    I would recommend this to a friend
  • Pros mentioned:
    Charging speed, Overall performance, Portability

    Rated 5 out of 5 stars

    Device recommendation

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

    I took this portable battery charger to my trip to Ecuador and it has helped me a lot, was able to charge my phone, watch and other devices several times. I truly recommend for when you don’t wanna be stuck in one place charging for your devices. Charges fast. Really effective.

    I would recommend this to a friend