Smok X Cube II Review

Chris Kendell
July 30, 2015

SMOK X Cube II Intro

We review the brand new SMOK X-Cube II, a 160W temperature control mod by SMOK.

The SMOK X Cube II is a stunning box mod that is powered by dual 18650s (not included). The X Cube 2 is capable of 160W and has a temperature range of 200°F-600°F (100°C-315°C).

The unique thing about the SMOK X Cube 2 is that it features Bluetooth technology and customizable LED lighting with a unique and stunning fire button that is seamlessly built into the device. The X Cube II can be connected to your phone via Bluetooth and then controlled via the SMOK app or just through the box mod itself. Its unique firing button and Bluetooth capability alongside its power and temp control, makes it a very promising box mod. We take a look to see how it fares below!

If you already have the TFV4 click here to check out the full line of SMOK TFV4 Coils​

We received this sample from SMOK themselves so a big thank you to them for sending this to us!

SMOK X Cube II Specs and Features

Kit Content

  • 1 x Smok X Cube II Box Mod
  • 1 x Micro USB Cable
  • 1 x Pouch
  • 1 x User Manual
  • 1 x Warranty Card


  • Wattage: 6-160W
  • Voltage Range: 0.35-8V
  • Temperature Control Range: 200°F-600°F / 100°C-315°C
  • Resistances: 0.06-3.0 ohm (Temp Mode) / 0.1-3.0 ohm (Wattage Mode)
  • Batteries: Dual High Drain 18650s
  • Material: Zinc Alloy and Stainless Steel Construction
  • Available Color: Gun Metal & Black
  • Other Features: Supports Bluetooth 4.0 via Phone or Tablet and App (Applicable to Android 4.3+ and iOS 7.0 Operating Systems)
  • OLED Screen
  • Magnetic Battery Cover
  • Customizable LED Light
  • Spring Loaded 510 Connection
  • 16 Wattage Memory Modes

Notable Remarks

Bluetooth 4.0 and App

SMOK xCube II BT App
SMOK xCube II BT App

You can control the X Cube II completely through the Bluetooth app and your phone. You’ll need at least IOS 7 or Android 4.3 system and above to connect your phone, so do make sure you have this on your phone otherwise you can’t control the X Cube through the app.

I am not a big fan of the app itself and much prefer to control the device through the box mod itself. However, you will need to change the temperature coefficient and this can only be done through the app.

​Important Tip!
Changing the temperature coefficient:
The temperature coefficient is automatically set at 0, so you will need to change this depending on what type of wire you are using in your RDA or atomizer.

If you are using Ni200 (nickel) then the temperature coefficient is around 0.006 so the slider needs to be changed to this setting. If you leave the temperature coefficient as it is, the device won’t work correctly in temperature control mode; at least it didn’t for me.

If you are using Titanium wire, then the temperature coefficient is 0.0038, so slide the slider up to this setting.
When you select your vape in temperature control mode it will actually give you the temperature coefficient on the device, but unfortunately it doesn’t change it automatically to match the coil you are using despite selecting either nickel or titanium. It then has to be done on the app, which is a bit of a pain.

That was the only thing I used the app for and everyone will need to do this if they want the temp control to work properly. Please make sure you have a phone or tablet that has the required operating system!

Temperature Control on the X Cube II

SMOK xCube II Kit (Black Edition)
SMOK xCube II Kit (Black Edition)

Once you have set the temperature coefficient you can use the temperature control. There were some initial videos on Youtube that suggested that the temperature control didn’t work, but since then people have been doing dry burn tests and the temperature control now does work. I am not sure if SMOK have changed something or if they have done some changes, but the temperature control now seems to work.

We used Ni200 coils in our Subtank Mini and once we changed the temp coefficient, the temperature control worked great. We played around with different temperatures and our sweet spot for those Ni200 coils was at the 260 degrees Celsius on normal mode. There is soft mode and hard mode as well. Soft mode means that the first two seconds of the draw will have 10% less power and for hard mode you will get 10% more power for the first two seconds.
Once you sort out the temp coefficient the temperature works great in my opinion!



SMOK xCube II (Silver Edition)
SMOK xCube II (Silver Edition)

I love the zinc alloy and stainless steel construction on the X Cube 2. Just like the original X Cube, I think it looks very sleek and sexy. The LED lighting adds something different and the unique fire button means that the X Cube 2 has a very unique looking design!

Wattage Range

The X Cube II works well up to 160W, so it competes with the likes of the IPV3 Li and Sigelei 150W. It provides more than enough power for any type of sub ohm tank or low build on an RDA. The wattage mode works as you would expect it to and you can easily scroll up and down the wattages using the + and – buttons at the top of the box mod.

Temperature Control

​Despite some initial videos on Youtube of some burning cotton, the temperature control now works. Our Kanger Ni200 coils worked great and we found the vape to be very enjoyable. We did a cotton burn test with an RDA as well and found the temperature control to work correctly.

+ & - Buttons on Device

SMOK xCube II Top
SMOK xCube II Top

The last X Cube didn’t come with any + and – buttons which made things a bit tricky to control on the actual device. The X Cube II however comes with a + and – so that you can scroll up and down the wattage and temperatures easily.

Fire Button

I really love the concept behind the push fire button and think it looks really sleek. The fire button runs down the side of the device and needs to be pushed/squeezed to fire. It fits in seamlessly with the device and with the LED lights integrated into it, I think the design aspect is fantastic.


Wobbly Battery Cover

SMOK xCube II Battery Compartment
SMOK xCube II Battery Compartment

This was my biggest complaint about this device and hopefully this will only be in the samples and will be corrected before mass release. The battery cover with the magnets is easy to take on and off, but when put back in place it wobbles slightly. This is especially the case when you hold the device in your hand and it is quite annoying. The mod itself otherwise looks amazing and this little flaw really ruins the quality aesthetics of the device when you see it doesn’t fit correctly into place.

Size & Weight

SMOK xCube II Battery Cover
SMOK xCube II Battery Cover

The Smok X Cube 2 isn’t the smallest of devices. It uses dual 18650 batteries, so it was never going to be a small device. However, it is still quite a bit bigger than the Sigelei 150W, the go to dual 18650 box mod. It is also quite heavy and not by any means a lightweight mod! Those who want big power have to make do with dual 18650s so there isn’t too much that can be done to make this box mod smaller and lighter.

Position of the Screen

SMOK xCube II Pin/Screen/Buttons
SMOK xCube II Pin/Screen/Buttons

The screen position on top of the box mod isn’t an issue when using 22mm tanks or attys. However, when using anything wider than 22mm the tank/atty will overlap slightly with the screen. Also if you are blowing big clouds and your tank or atty is getting hot the screen sometimes fogs up. It isn’t an issue really with 22mm tanks, so most people will be ok, but if you use anything bigger do bear this in mind, as it could be an issue.

Temperature Coefficient Can Only be Changed on the App

As I have stated above the temp coefficient can only be changed on the app, which is a big downside if you don’t have the correct operating system on your phone. The box mod itself should automatically change the temp coefficient when you select what wire you are using. The fact it doesn’t do that is a big downside.


Whether you are after a high wattage mod or a temperature controlled box mod, I think the X Cube II is a good choice. It seems SMOK have finally sorted out their temperature control issues that they had on the disastrous M80. Just in wattage mode this device in my opinion is almost worth its price tag. Add on the temperature control mode and I think this stunning box mod, is a good buy.

Just make sure if you are buying this for temperature control that you have the required operating system on your phone in order to change the temperature coefficient on the app. This is a must to ensure the temperature control works as it should do and this cannot (as far as I could work out) be done on the box mod itself, so you therefore need to download the App and connect it via Bluetooth for temperature control to work properly.

Overall the X Cube II is a great looking box mod that works well in temperature control and wattage mode. It isn’t the smallest or lightest box mod out there by any means, but it certainly packs a punch and provides good value for money.

Chris Kendell is the co-founder of Vaping360. He started the website with his brother and co-founder Alex in 2014, after Alex introduced him to vaping. Chris was immediately won over by the revolutionary and potentially lifesaving impacts that vaping can have on our society. In his minuscule spare time, you can find Chris travelling and exploring new places from his base in Germany, eating delicious food and enjoying a range of different sports.


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What about the fire button – do I now go and find another review to find out what this ‘concept’ is, I don’t even think there is an image of it. Screen layout, menu use, battery life, colour – gun metal? there’s a picture of a black one there and the other is distinctively silver – any more colours? I don’t know why I’m even moved to bother writing this but perhaps it is to do with the fact that it took so little time to read being, not so much a review but, an overview.

Nick Jennings
Nick Jennings

The fact of the smok x cube 2 requiring an app in order to use the TC funtion is what turned me off from this mod immediately. I’ll stick to my Sigelei products.


Latest Firmware allows changing the temperature coefficient on the device. No need for the app any more for this purpose.

Alex Kendell
Alex Kendell

I will check, thanks for the update!


It really is too big and heavy, I don’t see this mod ever leaving my house. The app is a spammy mess, and with the firmware update, it isn’t really necessary after you select your LED color. The Bluetooth turns itself off after a while, so it is necessary to turn BT back on anytime you want to connect.

I did like the adjustable power profiles, from soft to hard, but there were too many shortcomings to recommend this.

Iam Smoke
Iam Smoke

I have this Smok with a Crown 2 tank using a .25 coil…My question is what is the best setting to use My ohms on b/c for some reason My coils keep burning out very fast…

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