Shargeek Storm2 Slim power bank review – It’s fast, it’s small, it’s … clear!

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Shargeek Storm2 Slim 8

REVIEW – How the new Shargeek Storm2 Slim power bank compare to a wall outlet with USB ports? Let me explain. Recently, I replaced two outlets with ones that had built-in USB ports. My thinking was that I could use these outlets to charge my devices without needing an adapter. While the thinking was correct, I didn’t realize how underpowered these wall USB ports can be. It takes seemingly forever to charge anything—especially if I’m in a hurry. 

Shargeek Storm2 Slim 12

That’s where portable charging devices come in handy. I discovered that I can (slowly) charge a portable power bank like this Storm2 Slim and use that for my quick charging. Then I just return it to the outlet for charging while not in use. It seemed like a good plan. Was it?

Shargeek Storm2 Slim 10

What is it?

The Shargeek Storm2 Slim is a slimmer version of the (slightly) more powerful and slightly more expensive Storm power bank. The Storm2 Slim is thinner and easier to carry around. It has both a single USB A and USB-C ports (vs the Storm’s 2 USB-C, USB A, and DC ports). No matter—the lighter Storm2 Slim’s form factor makes up for it.  

Shargeek Storm2 Slim 3

The Shargeek Storm2 Slim power bank comes in a transparent case that shows off all the electronic guts consisting of a long and narrow circuit board attached to four lithium-ion (Li-Ion) batteries. A small IPS informational screen sits along the side, next to a single white multifunction on/off button that navigates the screen while showing all the info you would ever want—even if the type is too tiny for my eyes.

A canvas bag and a yellow USB-C cable are the only accessories offered.

Shargeek Storm2 Slim 4


  • 20000mAh capacity
  • Input: USB-C (65W Max)
  • Output: USB-A (30W Max), USB-C (100W Max)
  • Transparent PC material case
  • Sandblasted aluminum end caps
  • Small IPS informational screen
  • Airline safe

Shargeek Storm2 Slim 11

Design and features

First, this is one cool-looking charger. It would be nice even if it came in black, but this transparent case just looks way better. It’s the kind of gadget that will grab people’s attention.

It’s a comfortable size for holding and carrying. The plastic exterior is slick but still grips easily. Previously, I’ve used all-aluminum power banks that always felt slippery and didn’t provide a lot of confidence when holding.

Shargeek Storm2 Slim 7

Four lavender-colored Li-Ion batteries sit next to a slim circuit board that houses the two USB ports, IPS screen, and on/off button. It’s a simple, yet functional layout—until you try to read the Shargeek Storm2 Slim power bank’s built-in screen. 

Maybe I’m old, but the text on the IPS screen is small, as in T I N Y. I usually need to use a magnifying glass to read the text. It’s a shame because there’s so much useful information packed into the micro-screen. If only I was 20 again … 

Shargeek Storm2 Slim 6

Shargeek calls the displayed info EMOS (Energy Management OS 1.0). The screen shows two “levels” of information accessible by either long or short pressing of the on/off button. The first level has five information groups all showing on one full-color screen: 

  1. Port status – Tells you which port is connected
  2. Input status – Displays input info, such as charging voltage, charging current, and charging port.
  3. Output status – Displays output voltage, current, and the output power of a specific port.
  4. Battery information – Shows current battery life, battery voltage, and current. The icon can be seen in 4 color percentages of life left in the battery.
  5. System status – Battery, circuit board temperature, and system running time are displayed. 

Shargeek Storm2 Slim 1

The second level changes to a one-color screen that displays 7 separate items:

  1. Output parameters
  2. Battery Pack info
  3. Configure temp info
  4. Reset system run time
  5. Display settings
  6. Power off
  7. Exit (return to top-level)

Still with me? This is just an overview. It can be a bit confusing, but the info is there for those who want to access it. You can easily spend 30+ minutes perusing all the info shown on the screen.

Shargeek Storm2 Slim 5

Connecting the Shargeek Storm2 Slim power bank to any gadget is the same as any other charger. The Slim is small and light enough to throw into a backpack and forget it’s there—until you have to charge a device. 

The Storm2 Slim’s large 20,000mAh capacity can charge a smartphone up to 4 times, a laptop or tablet up to 1.5 times, and DSLR camera up to 12 times. It takes 90 minutes to be fully recharged. Those aren’t life-changing numbers, but it’s enough to get you through a full day should you need that extra oomph—and look good, too!

Shargeek Storm2 Slim 2

What I like

  • Transparent case
  • Lots of info on the built-in screen
  • Large capacity for its size
  • Lightweight enough for carrying  

What I’d change

  • Text on screen is tiny
  • Learning curve to navigate levels of info
  • The transparent case will show scratches

Shargeek Storm2 Slim 9

Final Thoughts

The Shargeek Storm2 Slim is a handy and useful power bank. The included canvas pouch offers good protection and its strap makes carrying easy. The USB-C cable length is more-than-adequate for any charging situation. It’s one of the more useful power banks I’ve come across. Solid construction should bring years of dependable use. Now, where’s my magnifying glass?    

Price: $199.99
Where to buy: Shargeek and Amazon
Source: The sample of this product was provided by Shargeek.

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