Back to School DealsSavings is one of our best subjects.Shop now

Skip to content
Main Content

Customer Ratings & Reviews

Customer reviews

Rating 4.4 out of 5 stars with 47 reviews

Rating Filter

Rating by feature

  • Value

    Rating 4.6 out of 5 stars

  • Quality

    Rating 4.6 out of 5 stars

  • Ease of Use

    Rating 4.5 out of 5 stars

Pros mentioned filter

Cons mentioned filter

89%would recommend to a friend

Customers are saying

Customers are enthusiastic about the Ultimate Lithium power bank's long-lasting battery life, describing it as "heavy-duty" and capable of holding a charge for an extended period. However, some customers noted that its size and weight can be substantial, making it less portable. The large capacity is a significant advantage for many, despite the bulkier form factor.

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 1 Showing 1-20 of 47 reviews
  • Pros mentioned:
    Battery life, Charging speed
    Cons mentioned:
    Weight

    Rated 5 out of 5 stars

    Great power bank

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

    This power bank really holds a lot of juice to charge up to three devices simultaneously which is very nice. I used it to charge my phone and laptop up to full charge before needing to echarge the battery when i first tried it out. It comes with an LED light as well which is a nice bonus. The battery does weigh a good amount so it may not be the best for air travel. Would reccommend though!

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

    Rated 5 out of 5 stars

    High/versatile power delivery + bonus amenities!

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

    This is a handy power bank for my high demands! Three charging ports with loads of power delivery - great for my needs. It's a bit heavy but that comes with the power it offers. The flashlight is a fantastic bonus - with the handy handle, this one will definitely be coming on my next camping trip!

    I would recommend this to a friend
  • Pros mentioned:
    Battery life
    Cons mentioned:
    Size

    Rated 5 out of 5 stars

    IT HAS A LIGHT!!

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

    PROS: This huge charge is greattttt I love the fact I can charge basically anything and it will still have charge after charging three different devices. You can charge a chromebook if you want but yes it will charge kind of slowly but it's still convenient. It also has a built in light I love that so much. CONS: ITS very big so kind of a hassle to store somewhere and doesnt fit great in a backpack so just to make sure to buy a big bag with a bigger pocket for it.

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

    Rated 4 out of 5 stars

    Massive Power Bank

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

    This power bank is heavy duty and charges devices quickly. Also has a LED light on the back which can be useful. Comes attached with a carrying strap. Arrives precharged so I was able to try it right away.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Charging speed
    Best Buy Employee

    Rated 5 out of 5 stars

    Great camping tool

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

    Great battery life and comes with a built in emergency light charged phones and hand held devices quickly and still had left over juice to run my speaker all around amazing.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 4 out of 5 stars

    LA Fire Power Outages

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

    Water and Power Keeps Turning OFF Power do to All the Lawsuits to the Power Companies So We Are having Power Outages every Time High Winds are Happening Best Investment I Did Need to Buy 1 for Every Family Member will be Buying more of this Great Brand

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

      We're glad our power bank has been a useful investment for you. If you have any questions or need further assistance in the future, don't hesitate to contact us.
      Energizer Power Bank
      Service Team

  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Not TSA Approved but Works

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

    It's a heavy-duty charging battery and seems to work well. However, I purchased it to take on a trip but it is not TSA approved. So, I had to buy a smaller one. Buyer beware!

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

    DECENT FOR MINIMALISTS

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

    TWO MAXIMUM PORTS, ONE USB AND C OUTPUT. CHARGES IN ABOUT A DAY. KEPT CHARGE IN STANDBY FOR A WEEK. PARTICULARLY DENSE AND HEAVY. DECENT TENT LIGHT.

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

    Rated 5 out of 5 stars

    Excellent backup battery charger

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

    Excellent multipurpose battery pack charger. I can charge multiple devices at the same time.

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

    Great portable charger

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

    Massive charger, literally took just a few seconds to go from 80 percent to 100, it is super fast and a great product if you go hunting for days etc.

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

    Rated 5 out of 5 stars

    Great power bank! Hopefully it lasts

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

    Its not too heavy and seems well made. At 30w charging it takes about 7-7.5 hours to charge. This charged my 11,200 mah tablet battery from 0-100% pretty slowly, 4 hrs, but there was still 70% left on this power bank, thats insane! If i had a complaint it would be it doesn’t show how many watts its inputing or outputting. Other than that its been great so far. I haven’t owned it for long but I hope it lasts for at least 2 -3 years

    I would recommend this to a friend
  • Pros mentioned:
    Battery life, Charging speed
    Cons mentioned:
    Weight

    Rated 5 out of 5 stars

    Solid

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

    Heavy, charges things fast and efficiently. Holds a charge well.

    I would recommend this to a friend
  • Pros mentioned:
    Battery life
    Best Buy Employee

    Rated 5 out of 5 stars

    Awesome product

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

    Ive had this for about a week. I havent used it for anything but charging my cell phone. But ive only charged it once since purchase and have used it to fully charge my phone 6 times before having to recharge! Amazing product that actually can be called a useful portable charger

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

    Works Great!

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

    Excellent capacity and functionality. I have had this battery bank for about 3 weeks and it has worked flawlessly and continuously.

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

    Great backup power

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

    I always have low expectations for these kind of products. Portable chargers always seem nice in theory, but never seem to perform as intended. This one on the other hand. Over performed. I can charge so many devices on a single charge with this thing. It does take awhile to charge. I recommend using the correct power cube because it will not charge if the power is too low. And will be slow too. Overall it’s a really great product for the price. Also I almost forgot to mention, it’s massive. Heavy too. Just be aware.

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

    worth the cost

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

    technically too high capacity to fly with but TSA does not seem to notice or care. positively ridiculous amount of charging power kept me fully charged the whole week i was in vegas for wrestlemania. handle broke about two days after i got it though so i can't give it a full 5 stars but it looks like i should be able to replace/upgrade it with a standard camera wrist strap so no worries there really. also, it is a bit heavy/awkwardly shaped to carry around or put in a pocket so if you need to go somewhere with a no bags policy this ain't great

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Perfect Buy

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

    This power bank is a beast! 50000mAh is no joke, it charges my phone like a dozen times before needing a recharge itself. Totally worth every penny, it's a lifesaver on trips and during power outages. Highly recommend it to anyone who needs a reliable and powerful portable charger. Seriously, buy it, you won't regret it!

    I would recommend this to a friend
  • Pros mentioned:
    Battery life
    Cons mentioned:
    Size
    Best Buy Employee

    Rated 5 out of 5 stars

    Great charger to keep in car

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

    Works great a little bulky. Gets about 4 charges on my 14 pro max

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Amazing Powerbank

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

    Absolutely amazing power bankI recently got this because my laptop dies really quickly but now that issue is gone. Definitely worth the price. Only Flaw is it takes a while to charge

    I would recommend this to a friend
  • Pros mentioned:
    Battery life

    Rated 5 out of 5 stars

    Budget power bank

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

    50000 is a lot of charge. Downside is you also need a fast charger to charge it fully quickly, which I do. Otherwise it will take too long to charge even overnight.

    I would recommend this to a friend
Sponsored