Labor Day SaleEnds September 7. Limited quantities. No rainchecks.Shop now

Skip to contentGo to Product Search
Main Content

Customer Ratings & Reviews

No content
  • Front Standard. Dynex™ - Lithium-Ion Battery for Most Micro USB-Enabled Devices - Emerald.
  • Alt View Standard 1. Dynex™ - Lithium-Ion Battery for Most Micro USB-Enabled Devices - Emerald.
  • Alt View Standard 2. Dynex™ - Lithium-Ion Battery for Most Micro USB-Enabled Devices - Emerald.

Dynex™ - Lithium-Ion Battery for Most Micro USB-Enabled Devices - Emerald

Model:
DX-1222
SKU:
7435123
Highly rated by customers for:

Customer reviews

Rating 4.1 out of 5 stars with 1512 reviews

Rating Filter

Pros mentioned filter

Cons mentioned filter

86%
would recommend
to a friend

Customers are saying

Customers express satisfaction with the Lithium Ion Portable Battery Charger's long battery life, portability, compact size, and affordable price. Many appreciate its lightweight design and compatibility with various devices. Positive feedback also highlights the charger's performance and vibrant color options. A minor concern raised by some users is that the unit can get warm during charging.

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 29 Showing 561-580 of 1,512 reviews

  • just works!

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

    with a single cable, light weight, and full charge I think this portable battery just works!

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • Easy to Use

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

    It's pretty easy to use. Just charge it and go. Not to mention it comes in wonderful colors!

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend
  • Pros mentioned:
    Portable

    Extends phone life

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

    Great for when you need to charge a phone and there are no power sources readily available.

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • Lifesaver for devices with deteriorating batteries

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

    Got one for a gift and immediately purchased a second for my wife. Only complaint is that the light indicators are a little hard to see and don't show current charge level at a glance.

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend
  • Pros mentioned:
    Price

    Seems to work well

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

    No problems, seems to be worth the money paid. Always nice to have a backup power source.

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • More Power

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

    Product great for when you need that charge. Life saver , money spent wisely. great product

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • Works as advertised

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

    It has charged two phones with less than 20% enough to get home to charge the normally

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • works!

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

    I've bought other portable chargers but this one actually lasts longer than any of them

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • Helpful

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

    This charger comes in handy when there are no other places to charge or to just have the simplicity of the convenience to charge my decive.

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • Great for backup power

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

    You just plug up into it and you cell phone or Ipod for backup power when you need it.

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend
  • Pros mentioned:
    Price

    Awesome

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

    Quick, compact, reliable!! Easy! Priced right! I bought two and will buy more for my team!

    I would recommend this to a friend

  • It was great

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

    This little device is so awesome and convenient. :)

    I would recommend this to a friend

  • A must have

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

    This is a must have and great to have if youll be away from a wall outlet or in the car

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • Great external charger

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

    Biggest benefit is it's compact and slim size making carrying it around everywhere easy!

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • EHH

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

    These are ok at best. I had to take one back because it wouldnt charge my phone even though it was at a full charge. It overheats quickly which then causes it to stop charging your device. It can never get thru charging your phone before it overheats. I think it charged my phone 15% before it "needed a break" It takes a long time for it to charge itself up as well, much longer than my phone does itself. If you are in need to have a real cheap backup battery than get this, but there are much better options out there.

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    No, I would not recommend this to a friend
  • Pros mentioned:
    Quick charge

    good so far

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

    I have only used this usb charger a handful of times, but it is handy when I need it!

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend
  • Pros mentioned:
    Portable

    Great power supply

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

    Charges quickly and is compact. Works well for everyday use and is easy to recharge.

    I would recommend this to a friend

  • Gift

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

    Gave this as a gift and he loves it! It works better than expected to charge quickly!

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • great battery for charging cell phone on the go

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

    This is an inexpensive battery backup for keeping your cell phone charged on the go.

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend

  • excellent

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

    Now If I need to Charge my Phone I can Do it any tine and any place with this is GREAT

    This review is from Dynex™ - Lithium Ion Portable Battery Charger - Sapphire

    I would recommend this to a friend
Page 29, Showing 561-580 of 1,512 reviews
Sign in or Create Account

Get the latest deals and more.

Best Buy appLearn more
Share on YouTubeShare on InstagramShare on TikTokShare on FacebookShare on PinterestShare on X
Best Buy Canada
AccessibilityTerms & ConditionsPrivacyInterest-Based AdsState Privacy RightsHealth Data PrivacyDo Not Sell/Share My Personal InformationLimit Use of My Sensitive Personal InformationTargeted Advertising Opt OutCA Supply Chain Transparency Act
In-store pricing may vary. Prices and offers are subject to change. © 2026 Best Buy. All rights reserved. BEST BUY, the BEST BUY logo, the tag design, and MY BEST BUY are trademarks of Best Buy and its affiliated companies.