Introduction: Sifu B Tab by UD

The latest release from UD is the rather interesting Sifu B-Tab, a combination of a building station and functional mod in one package!UD Sifu B Tab size

You have two 510 connectors built in, one on the side and one at the top, an accurate ohm reader (down to 0.01ohm), a fully functional 70w mod which supports temperature control for Ni200, Titanium, SS316L and TCR all wrapped up in a box manufactured from aircraft grade aluminium.

On paper, it looks to be an ideal all in one solution, so let’s have a look at how it performs!

Kit Contents

  • UD Sifu B-Tab
  • Micro USB cable
  • Alligator clip multimeter wires
  • Instruction manual

Key Features

  • 70 Watt output
  • Temperature Range of 200F – 600F / 100C – 300C
  • TC: Ni200 Nickel, Ti01 Titanium & Stainless Steel 316L
  • Power Curve & TCR (temperature coefficient of resistance) adjustment.
  • Built-in high-accuracy Ohmsmeter (accurate to 0.01 Ohms)
  • Two spring loaded 510 connectors
  • Software upgradeable
  • Large and tactile stainless steel power button
  • Supplied with test-leads for measuring external resistance.
  • Built-in coil building deck with side mounted anti-slip mat.
  • 18650 battery compatible (not included)
  • Size: 90mm x 55mm x 26.5mm
  • Clear OLED display

Design and Build Quality

The UD Sifu B-Tab measures in at 90mm x 55mm x 26.5mm, meaning it isn’t the smallest device on the market.

I have pretty average sized hands and this feels huge in the palm of my hand, and it isn’t the most comfortable unit either! UD Sifu B Tab review

It is manufactured from aircraft grade aluminium, and although the device is bulky it has a very nice finish to it.

I felt that the OLED screen is a particular highlight on this device, clear in any light condition, and easy to read the information that is displayed on screen.

There are two spring loaded 510 connectors present, one at the side for use as a building station, and one at the top of the device if you wish to use it as a mod.

There are two holes for the multimeter wire leads, once fitted you can test your coil resistance before you fit the coil to your atomiser, and large stainless steel buttons that are very responsive.UD Sifu B Tab Multi Meter

A USB port is found for charging and upgrading, and one of the best features is the magnetic battery door cover.

This also flips over and reveals a non slip surface, meaning you can build without fear of your Sifu B-Tab sliding around!UD Sifu B Tab base

How Does The UD Sifu B-Tab Perform?

All in all, it actually performs very well indeed as both a building station and a mod!

Neither feels like a gimmick that has been tacked onto the device, and both offer the same functions as their stand alone counterparts.UD Sifu B Tab

As a building station, you have all the functions you need to build your coils. Resistance is accurately read down to 0.01ohm, and you can test fire coil builds with resistances as low as 0.05ohm.

The multi-meter leads mean that you can clip these onto your coil build and test the resistance before fitting your coil. This means you can be sure you are satisfied with your coil resistance without having to install the coil first to check.

As a mod, the UD Sifu B-Tab is actually a great little device.

You have 70w of power to use, and temperature control can support wires made from Ni200, Titanium, Stainless Steel 316L and there is a TCR input as well, should you wish to use a different wire in temperature control.UD Sifu B Tab build

The chip provides stable and accurate performance, and I have found it to be perfectly reliable.

Battery life is a bit of a downside unfortunately. The UD Sifu B-Tab only takes a single 18650 battery, and this does drain quite quickly during usage.

You can access the battery compartment easily thanks to the magnetic battery door cover, and USB charging is also built into the device as well.

What I Liked

Even though it is a pretty hefty unit, the UD Sifu B-Tab is solidly made, and it’s able to withstand heavy day to day usage.

I’ve given it a really good bashing, and it’s absorbed pretty much everything I can throw at it!

It’s even survived a few hard drops on the floor as well, which is pretty impressive.

The large stainless steel fire button is great and the magnetic battery door cover has a non slip coating, so you can flip it over and give your Sifu B-Tab more traction when building on a flat surface.

As an all in one solution, this is a really handy unit to have. You have got a fully functional building station, as well as a vape mod that has pretty comprehensive functions, and neither mode feels like it has been tacked on as a gimmick.

The OLED display is very clear and easy to read under pretty much any light condition. I never had any trouble seeing what was displayed onscreen!

What I Didn’t Like

The main drawback to the Sifu B-Tab is the size of this unit.

It really is a big old beast, and it’s heavy too, it isn’t the most pocket friendly unit around.

It’s quite large and uncomfortable to hold in your hand when using it as a mod.

It only takes a single 18650 battery, so battery life is very limited. It does run down quite quickly, so you do need to carry around spare batteries with you or be near a power source that you can charge from.

The UD Sifu B-Tab isn’t the cheapest device on the market.

Final Review Verdict

Surprisingly, the more I have used the UD Sifu B-Tab, the more it has grown on me.

I didn’t like it at first, which was probably down to the size of the thing, however as time went on I have used it more and more.

It does provide a very handy all in one solution, and I have found myself taking it with me on trips away from home as it provides a handy building station, with the bonus of it being a solid backup mod.

The UD Sifu B-Tab functions very well as a building station, as well as a mod with some very comprehensive features, so for your investment you do get a very good package here.

As a building station it works as well as anything else available. When using it as a mod you have all the features you would expect to find from some of the more popular mods available.

Would I buy it again though if I lost or managed to break it? Maybe… If I could find a good price.


  • Great all in one build deck and mod solution
  • Solid build quality
  • Big and responsive fire button
  • Handy unit to take away on trips
  • Ni200, Titanium, SS316L and TCR all supported in temperature control
  • Can fire down to 0.05ohm
  • Useful magnetic battery door cover
  • Clear OLED display


  • Bulky unit, not very pocket friendly
  • Fairly hefty price tag
  • Limited market appeal
  • Single 18650 battery limits battery life
Build Quality
Ease of Use
Likelihood Of Replacing If Lost Or Damaged
Been vaping full time for three and a half years, started on cigalikes for a fair while then curiosity got the better of me and I moved onto an ego/ce5 set up after, a month or two later I was seeing people walking around with these interesting shiny tubes and I thought 'I gotta get one of those'. Before I knew it a trip down to my local B&M got me my first VW mod, an Innokin SVD, paired with an iClear 30, and I was hooked. Soon after that I was jumping to VW mods both box and tube shaped, before I then made the jump to rebuilding and thus sub ohming, with my first RDA and mech mod. These days I'm still preferring mechanical mods, but using VW mods with both RDA's and tanks alike whilst on the move, most importantly I am still loving vaping!


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