Innokin iSub V Tutorial

Innokin ISubV: Review and Tutorial

Update: The Innokin iSubV has now been discontinued. Alternative Innokin tanks include the Zenith II tank and the Zlide.  

The Innokin iSubV looks much like any other tank out there (of course there is much to be said for the more understated look!) – but hidden in its simple construction are some very clever features!

Firstly, much like its predecessors in the Innokin iSub range of vape tanks, it has an easy to replace coil head (the No Spill Coil Swap System) which makes changing coils a doddle. Secondly, the simple and elegant spring mounted chimney ensures leak-free filling virtually every time.

We’re also impressed with the capacity. Given its compact size, you’d expect the capacity to be limited. In fact, despite being almost half the size of the Aspire Triton, it holds 3ml, just ½ a ml less!

Innokin iSub VMenu

ISubV Coils and Compatibility

The Innokin iSubV is backwards compatible with pre existing iSub coils, and is supplied with the new 0.5 Ohm stainless steel (SS316L) BVC (bottom vertical coils), which can be used in both wattage and temperature control modes.

How do you install the coils?

Innokin iSub V CoilInstalling coils starts much like any other tank, by removing the base, but you soon notice something different; the 510 connector is part of the coil, not the tank itself, giving a more direct contact with the power source.

Innokin iSub V Coil ChangeUnlike other tanks however, you do not need to then unscrew the coil head from the chimney section, it simply slides out from the bottom, making quick coil changes a doddle.

When replacing, you’ll notice a neat little ridge at the bottom of the coil to help align it. Following which just screw the base back in and you’re done!

How do you fill the tank?

Innokin iSub V E-LiquidApproximately 2 full turns of the top cap are enough to remove for filling, and immediately you are aware of the inventive spring loaded chimney as it pushes up.

Innokin iSub V FillingAs it lifts, the chimney blocks off the flow of liquid to the coil. After topping up, with slight firmness on the downward pressure, you press it back in as you screw the top on, opening the juice flow again.

Features Innokin iSub V Box Contents

  • 3.0 ML Pyrex Glass Tank
  • Quick & Clean Top Fill
  • 100% Stainless Steel
  • Adjustable Airflow Innokin iSub V Box Reverse
  • Removable Drip Tip
  • Replaceable Glass Tank
  • No Spill Coil Swap System
  • iSub Coils Compatible

What we like…

  • Simple functionality
  • Elegant design
  • Large capacity despite small size
  • Wide range of coils available
  • Temperature control compatible

What we don’t like…

  • Slightly restricted airflow
  • Chimney section seems susceptible to heavy handedness
  • SS coils and my DNA200 (in wattage mode) disliked each other with voltage somehow doubling.


A perfect partner for the Innokin Cool Fire IV TC100. Innovative features ensure that changing coils and topping up are both leak free and easy with this compact tank. Comes with stainless steel coils which are compatible in both TC and wattage mode.

6 thoughts on “Innokin ISubV: Review and Tutorial”

  1. I have the cool fire 4 with this tank and I love it, be prepared to go through some juice though. I use 50/50 or 80/20, I like manabush and Kik cloud liquids, I vape on 22 to 25 watts, coils lady about 3 weeks for best performence but they are not expensive.

  2. Ive been smoking the Tornado-T ecig and just switched to a Cool Fire IV with an iSubv tank.
    Not sure what im doing wrong but every time i inhale it stings my throat and can only smoke in short bursts. I have tried different watt settings with the same result. I burnt my first coil because i didnt prime it but my 2nd coil i did prime properly but it is still really harsh. Currently using a 6mg liquid.

    1. 6 mg is quite harsh for sub ohm vaping try 3mg. To make my coils last longer I stick a pin through the side holes and twiddle it to make the the hole bigger. Then I pull a bit of the cotton through each hole (just a little bit) to stop the juice running straight through.

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