Aukey Basix Slim 10,000mAh review: A battery pack that offers more than what you pay for

At $20, we didn't expect much from this slim battery pack, but it surprised us.

Credit: Aukey

Aukey’s accessory lineup is wide-ranging, with items like charging cables, wall adapters, and battery packs. The company’s packs have performed just okay in the past, with overall efficiency failing to crack the top half of all the portable battery packs we’ve tested.

That changes with the 10,000mAh (37Wh) Basix Slim battery pack from Aukey. This $19.99 pack punches above its price in performance, although the overall build quality leaves us somewhat disappointed.

Note: This review is part of our roundup of portable power banks. Go there for details on competing products and our testing methods.

As its name implies, the Basix Slim is rather, well, basic and slim. It’s small enough to fit into a side or front pocket on your favorite backpack, or even your pants pocket if you’re in a bind. There are four total ports on it, three of which are in the front of the pack. There are two full-size USB ports, with a USB-C port in the middle. On the right side of the housing is a microUSB port (more on that in a minute). On the left side you’ll find the power button—well, really more of a status button, as you don’t need to press it in order to start charging a device. Just plug something in and the pack automatically wakes up and starts charging. 

basix slim Aukey

In addition to its its full-size USB/ USB-C ports, the Basix Slim sports a microUSB port on its side.

Pressing the button will, however, activate the status lights on top of the pack. There are four lights, each one representing a quarter of the pack’s capacity.

Overall, the Basix Slim is well designed, but the front two ports are just slightly too small for a standard USB plug. You can get one in there, but I often felt like I was going to break the cable, the port, or both every time I plugged or unplugged something into the pack.

As we do with all of our battery pack tests, we used the AVHzY USB Power Meter to verify the outputs of the various ports on the Basix Slim. All three ports were tested, with each one triggering Apple 2.4a, Quick Charge 2.0, Quick Charge 3.0, Samsung 9V, and Huawei 9V charging standards. We also verified that the USB-C port supports Power Delivery at up to 12V/1.5A.

We used the same meter to monitor how long it took to charge the Slim, as well as the amount of power it puts out when drained from a full charge.

Charging at 18W, its maximum input via the USB-C port, the Slim charged in 2 hours and 40 minutes. I did not test the microUSB port on the Basix Slim, and frankly, I’m puzzled why it’s even included on the pack. I suppose you could use an 18W charger with a microUSB cable to power the pack, and then use all three ports on the front to charge your devices, if you needed to. But even Aukey’s instructions advise users to use USB-C for charging the pack. Beyond that, using the microUSB port means you just have to worry about carrying one more cable. Nobody wants to do that. 

As far as overall efficiency is concerned, the Basix Slim has a total capacity of 37Wh. Of that total, the Slim output is 33.65Wh, meaning it used 90.94 percent of the total potential power available. That’s good enough for 7th place among the 31 different packs we’ve tested, besting the overall average of 83.7 percent efficiency.

Included in the box along with the battery pack itself is a single USB-A to USB-C cable, which can be used to charge either the pack itself or a USB-C compatible device.

The Basix Slim makes for an affordable stocking stuffer this holiday season, or a compact, easy-to-tote battery pack for yourself. 

Join the newsletter!

Or

Sign up to gain exclusive access to email subscriptions, event invitations, competitions, giveaways, and much more.

Membership is free, and your security and privacy remain protected. View our privacy policy before signing up.

Error: Please check your email address.
Keep up with the latest tech news, reviews and previews by subscribing to the Good Gear Guide newsletter.

Jason Cipriani

PC World (US online)
Show Comments

Cool Tech

Bang and Olufsen Beosound Stage - Dolby Atmos Soundbar

Learn more >

Toys for Boys

Sony WF-1000XM3 Wireless Noise Cancelling Headphones

Learn more >

ASUS ROG, ACRONYM partner for Special Edition Zephyrus G14

Learn more >

Nakamichi Delta 100 3-Way Hi Fi Speaker System

Learn more >

Family Friendly

Philips Sonicare Diamond Clean 9000 Toothbrush

Learn more >

Mario Kart Live: Home Circuit for Nintendo Switch

Learn more >

Stocking Stuffer

SunnyBunny Snowflakes 20 LED Solar Powered Fairy String

Learn more >

Teac 7 inch Swivel Screen Portable DVD Player

Learn more >

Christmas Gift Guide

Click for more ›

Most Popular Reviews

Latest Articles

Resources

PCW Evaluation Team

Tom Pope

Dynabook Portégé X30L-G

Ultimately this laptop has achieved everything I would hope for in a laptop for work, while fitting that into a form factor and weight that is remarkable.

Tom Sellers

MSI P65

This smart laptop was enjoyable to use and great to work on – creating content was super simple.

Lolita Wang

MSI GT76

It really doesn’t get more “gaming laptop” than this.

Jack Jeffries

MSI GS75

As the Maserati or BMW of laptops, it would fit perfectly in the hands of a professional needing firepower under the hood, sophistication and class on the surface, and gaming prowess (sports mode if you will) in between.

Taylor Carr

MSI PS63

The MSI PS63 is an amazing laptop and I would definitely consider buying one in the future.

Christopher Low

Brother RJ-4230B

This small mobile printer is exactly what I need for invoicing and other jobs such as sending fellow tradesman details or step-by-step instructions that I can easily print off from my phone or the Web.

Featured Content

Product Launch Showcase

Don’t have an account? Sign up here

Don't have an account? Sign up now

Forgot password?