Customers are enthusiastic about the Ultimate Lithium 10,000mAh power bank's long-lasting battery life and ease of use. Many appreciate its convenient size and the high quality of its construction, along with its compatibility with various devices via multiple USB ports and USB-C connectivity. However, some customers noted that the device is relatively heavy.
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 894 reviews
Pros mentioned:
Battery life, Ease of use
Rated 5 out of 5 stars
Best portable charger
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Posted . Owned for 1.5 years when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Purchased for a family vacation and this did not disappoint!
The charge lasted our whole trip and it was easy to carry. worth the money and it helped our kids as well keeping their tablets charged when they needed it. And I love the compatibility with different charging cables as well.
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Pros mentioned:
Battery life, Charging speed
Rated 5 out of 5 stars
Charges fast and lasts!
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Posted . Owned for 2 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This battery has a 4 led battery level indicator and while i would prefer the led display with a percentage, realistically it serves it's purpose perfectly well. I charged the battery to full and then used it to charge my friend's, girlfriend's, and my own cell phones. It's still at 3/4 light s on the charge indicator. The qualcomm quick charge 3.0 charge port charges my phone at around 2200 mAh which is plenty fast. You usually need to pick between large capacity or faster charging when choosing batteries at this price point but this is a wonderful middle ground, also totally understand how much 20000 mAh really is, my girlfriend's 30000 mAh battery is great for road trips but it's otherwise overkill.
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Pros mentioned:
Battery life, Charging speed
Rated 5 out of 5 stars
Probably one of the best battery banks I’ve used
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great for long times in the car or as an alternative to public wall plugs. Great capacity and fast charge works great. Build quality is really solid and doesn’t feel cheap like most battery banks. Honestly one of the better battery banks that I’ve used if not the best.
I would recommend this to a friend
Pros mentioned:
Battery life
Rated 5 out of 5 stars
Nuff said
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Posted . Owned for 5 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
As you can see in the photo, its charging my buds, smart watch, Tablet, laptop, and still will have enough juice to power up the Galaxy Note Ultra, Nuff Said! I still don't remember it ever being on empty, and i can count the times I've seen the one-light bar on one hand. One word? Quality!
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Pros mentioned:
Battery life
Rated 4 out of 5 stars
Energizer charger needs more attention
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Posted . Owned for 1.5 years when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
I really like the convenience of being able to travel overseas and use on the plane and waiting at the gates.
The time to recharge my phones and iPad was awesome !
Unfortunately the power button got pushed into the unit after only one and in’s half years of use.
Fortunately I bought the total tech plan and I will be replacing next week .
Overall 9 out of 10 rating.
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Pros mentioned:
Charging speed
Rated 5 out of 5 stars
Powerful power bank!
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Posted . Owned for 1.5 years when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Wanted portable powerbank to top off our phones during travel. It has come in handy and able to top off our devices if my partner and I are low on battery. With the ability to quick charge, you don't have to worry about being plugged in for a long time.
I would recommend this to a friend
Pros mentioned:
Battery life
Rated 5 out of 5 stars
Great value and performance.
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Posted . Owned for 1 year when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Works great with my iPhone 15 Pro. The battery lasts a long time. It has multiple ports for different type of usb connections.
I would recommend this to a friend
Pros mentioned:
Battery life
Rated 4 out of 5 stars
It’s a good power bank
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Posted . Owned for 11 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Overall good product charges my iPhone from 0 to 100 twice so it does the job with this product. Don’t expect everything under the sun, but it works very well for me.
I would recommend this to a friend
Pros mentioned:
Charging speed
Rated 5 out of 5 stars
Powerful
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Posted . Owned for 1 month when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great power bank. Charges my devices fast. I recommend buying it.
I would recommend this to a friend
Pros mentioned:
Ease of use
Rated 5 out of 5 stars
Power Bank
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
These power banks are awesome. Great for travelling or power outages.
I would recommend this to a friend
Pros mentioned:
Charging speed
Rated 5 out of 5 stars
Great portable charger
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Posted . Owned for 2 months when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great portable charger I use it to charge my iPhone se 2020 and it charges it fast with usb c to lightning from 0% to 57% in 30 minutes I recommend this portable charger.
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Rated 5 out of 5 stars
Amazing charger
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Great charger to use with iPhone or android. Works very well and looks great.
I would recommend this to a friend
Pros mentioned:
Battery life, Charging speed
Rated 5 out of 5 stars
Best speaker! Lives up to energizer name.
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This is by far the best portable charger I have ever owned. It charges super quick and I have the note 10+. I had gotten it on sale on black Friday and wish I would have bought a few more. Excellent charger hands down.
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Pros mentioned:
Battery life
Rated 5 out of 5 stars
Energizer portable battery backup
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
This portable back up battery is great. My current phone battery won’t hold a charge for 4+ hours of flights and this is a great solution. Out of the box it appeared to already be 50% charged. I had originally purchased the Anker Powercore III but it didn’t appear to work.
I would recommend this to a friend
Cons mentioned:
Weight
Rated 5 out of 5 stars
Power bank
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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.
So far so good I’m getting ready to go out of town and take it with me so I will update the review and let you know how it holds up. It is a little heavy
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Pros mentioned:
Battery life
Rated 5 out of 5 stars
great charger
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Posted . Owned for 1 week when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
2nd time buying.. great potable charger.. lots of power & love how you have a few different wire connections
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Pros mentioned:
Ease of use
Rated 5 out of 5 stars
My portable charger
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Posted . Owned for 3 weeks when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
Comes in handy very useful easy to use and I like it portable charger
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Rated 1 out of 5 stars
It’s Best Buy if you didn’t get someone else’s ret
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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 item from the packaging said it all what I was going to get a battery charger that’s been used for a while and not giving full charge any longer feel sorry for the fools who already threw away the packaging and now can’t get a refund
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
No, I would not recommend this to a friend
Pros mentioned:
Battery life, Charging speed, Quality
Cons mentioned:
Weight
Rated 5 out of 5 stars
Super Power Bank!
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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.
Bought because of the good reviews. Charges quickly and looks durable. It's quite heavy but hey, it's 20,000mAh. May be good for long travel especially if you have multiple devices.
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray
I would recommend this to a friend
Pros mentioned:
Battery life, Charging speed, Ease of use
Rated 5 out of 5 stars
Portable Charger
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Posted . Owned for 1 year when reviewed.
This reviewer received promo considerations or sweepstakes entry for writing a review.
I've been fully satisfied with the product. Lasts a good while, and charges at a good rate. Very reliable. A bit large/heavy, so not ideal to carry in your pockets. But great for traveling, or spending a full day outside. Can charge multiple phones simultaneously too, if you're out with a friend.
This review is from Energizer - Ultimate Lithium 20,000mAh 18W Fast Charge Portable Charger/Power Bank QC 3.0 & PD 3.0 for Apple, Android & USB Devices - Gray