Battery Capacity
Battery Features
Variable Voltage, Variable Wattage
Battery Voltage
Battery Wattage
Coil Resistance
0.2ohm, 0.5ohm, 2.0ohm
Coil Type
Organic Cotton Coil
Made In
Tank Capacity
Tank Features
Adjustable Airflow, Pyrex Glass, Replacement Coils

Watch Video Review
Unit 29, Orbital 25 Business Park WD18 9DA Dwight Road, Watford, London, United Kingdom
+44 (0)1923 479 992

This Product Has Been Discontinued

Innokin iSub Tank Replacement Coils
5 Pack
0.2Ω, 0.5Ω, 2.0Ω
Innokin iSub Tank Replacement Coils

The Cool Fire IV Plus Kit is the updated version of the Cool Fire IV, and is comprised of the Cool Fire IV Plus Mod and the Innokin iSub G tank. The Cool Fire IV Plus differs to the original in that it will now fire up to 70 watts, contains a built-in 3300mah, and will fire atomisers down to a resistance of 0.1ohm.

The Cool Fire IV Plus is a powerful yet compact mod with a curved design that fits nicely in any hand, and it's ergonimic design means the power button is easily accessible whether you're a trigger finger, or thumb kind of person. As with all of Innokin's Mods, the Cool Fire IV Plus has a bright and big OLED display illustrating all the relevant info such as ohm resistance and wattage setting.

This particular version of the Kit comes with a colour matched iSub G Tank. The Innokin iSub G Tank is a slightly updated version of the original Innokin iSub Tank. As the name suggests this is a Sub Ohm capable tank which utilises replaceable 100% Japanese organic Cotton coils rated at 0.2, 0.5 and 2ohm. The capacity of the tank too has been changed to 3.8ml from the original 4ml. The iSub G Tank is constructed from 100% stainless steel and high quality Pyrex Glass, hence the "G", for "glass".


  • 1 x Cool Fire IV Plus Mod
  • 1 x Innokin iSub G Tank (matching colour with mod)
  • 1 x USB Charge Cable
  • 2 x 0.5ohm Coil (1 installed)


  • Max 70 Watt output
  • 3300mah built-in battery
  • Large OLED Display Screen
  • Attractive yet durable design
  • Tri-colour LED Battery level indicator
  • Convenient Micro USB Charging
  • Advanced safety features including overheat & over-discharge protection
  • Stainless Steel 510 threads
  • Spring loaded, gold plated positive pin
  • Fires coil resistance 0.1ohm-3.5ohm

Important information about Sub Ohm vaping:

This device is designed for sub-ohm vaping. It requires more vaping experience to use safely, and extra care should be taken when using a sub ohm tank. Sub Ohm coils will only work on a mod capable of firing sub ohm atomisers. Please ensure that your batteries can handle the extra power requirements, and that your mod can handle the amps.

We also advise not to use any e-liquid with more than 6mg of nicotine, as your vapour may taste harsh. Sub ohm vaping produces a bigger throat hit than standard coils, and extra care should be taken.

Disclaimer On Use Of Batteries


Batteries must:

  • Be charged correctly: The current and voltage used to charge the batteries must not be greater than is set out in the instructions. Batteries should not be charged in excessively cold or hot temperatures. Do not leave the battery in the charger for over 24 hours. Do not leave the battery unattended whilst charging. Never use a modified or damaged charge.
  • Use the correct discharge current: The discharging current shouldn’t exceed the level set out in the instructions. If it does this may cause the battery to overheat.
  • Store the batteries at the right temperature: batteries should be stored at an ambient temperature in dry, well-ventilated conditions. You should avoid excessive hot or cold.
  • Keep your batteries in a case when not in use. Don’t carry them around loose in bags or pockets: It’s vitally important that batteries do not come into contact with any metal objects as this can lead to leakage, explosion or fire.
  • Not be used if they are damaged, abnormally hot, discoloured, deformed, if the wrapping is not intact or if any other abnormal conditions are detected. Dispose of the batteries if this occurs.
  • Not be allowed to come into contact with water or fire. Dispose of the batteries if this occurs.
  • Not be put in microwave ovens or in any high pressure container.
  • Not be used or assembled with other different makes, types or models of batteries.
  • Avoid excessive physical shock or vibration.

If liquid leaking from a battery gets in your eyes, don’t rub your eyes, wash them with clean water and seek medical attention immediately. Ensure that the battery is disposed of immediately and that any liquid that has leaked from the battery is contained and removed as it may cause explosion or fire.

Each country has its own rules on the disposal of batteries. Please ensure that you dispose of the batteries in accordance with local regulations.

For more information about battery safety please see our Safety Tips For Vape Batteries.

Innokin iSub Tank Replacement Coils
5 Pack
0.2Ω, 0.5Ω, 2.0Ω
Innokin iSub Tank Replacement Coils
Innokin iSub
Apple Butter E-Liquid by Liquid State Vapors
from £5.99
10, 30, 60ml
0 3 6 12
80% VG
Apple Butter E-Liquid by Liquid State Vapors
Apple, Cinnamon
Dream Cream E-Liquid by Charlie's Chalk Dust
from £5.99
10, 30, 50ml
0 3 6
60% VG
Dream Cream E-Liquid by Charlie's Chalk Dust
Vanilla Cream, Fudge, Cinnamon
No.05 eLiquid by Beard Vape Co.
from £5.99
10, 30, 60ml
0 3 6 12
60% VG
No.05 eLiquid by Beard Vape Co.
Strawberries, Cheesecake

By from England uk

Best mod ever (01 April 2017)

I started on the kanger tec subvod and I upgraded to the innokin cool fire IV plus it's a very nice box mod love the shape and size of the mod fits in your hand perfectly it gives great flavour and brill clouds would highly recommend this product to friends and family who's looking for a upgrade mod. Excellent job innokin keep up the good work 10 stars

By from Bahrain

Love (28 June 2016)

I decided to quit smoking, spent a night researching till I came across Vape Club. Thank you for the video on youtube regarding this product. I like the look of the product and the video convinced me it was fairly easy to use.

I seem to have become a fan of Innokin, had it for around 2 weeks now. Received my iSub S today with a 0.5 ohm clapton coil wanted to try higher W.. Now vaping at 65w and I have fallen totally in love with the product all over again.

Extremely easy to use, honestly you don't need more than 70w, I love the quality and the brushed steel finish on the product. Battery life is very good as well to be honest. Only thing i would change would be the logo branding on the side, but it grows on you.

I tried e-cigarettes before and e-go pens, always found myself reaching back for a pack of cigarettes. It was been 2 weeks since I got this and I have not craved a cigarette once. Honestly believe it is goodbye smoking and hello vaping! I don't mind my sister with all her vape nation crap either!

But most of all, thank you Vape Club for the amazing service. Very happy and satisfied customer here!

By from Newcastle

love this mod (14 June 2016)

I've been using this mod since it came out and even though I have bought other mods I keep coming back to this. The tank is OK nothing special. I use the aspire cleito and it's bang on the money for me. I would definitely recommend this mod to anyone.

By from UK

Great MOD Great service (09 June 2016)

Very good mod, lots of control over the mod, flavour produced and clouds produced very good. Great video review of the item too, you know exactly what your buying and some good tips about breaking in your coils. Overall my experience with vape club has been first class. Keep up the good work.

By from Cardiff

Best Mod (07 June 2016)

This is the best mod I have..!

The storm edition, whilst rare to find now, is beautiful to look at - but that's just appearances - this mod is a beast..!

Whilst the sub tank is OK, to truly get the best from this mod you should invest in an Aspire Cleito tank and BOOOOOOOOOOOM - best flavour and clouds that can rival I mech mod - not that I recommend mech mods, safety first..!

I started vaping after giving up smoking last December and boy did I need an upgrade to stop me going back on the analogues - this is the one that has done that.

Quick to charge
Charge holds for 2/3 days
Great flavour and clouds - even better with a Cleito
Compact and fits nicely in the hand

What more could you want?


Excellent Mod (07 June 2016)

I went for this after my MVP 3 Pro died a slow death. I'd been looking for something more compact and wanted to move on to sub ohm.
Wow - firstly - awesome service as usual from Vapeclub. Ordered at lunch, delivered by 10am next day!
this mod and tank are very impressive. Strong battery life, lightweight and seems well built. The tank is excellent and simple to use and clean. Happily sits at 25W with the airflow 70% open and gives great taste and mouth hit for me.
Very happy with the service and the product!

By from UK

Awesome (02 June 2016)

Best ecig ive ever bought really happy with it. Been using it for 2 days now. Used to use the old ego pen ecigs but these watt changing ecigs are so much better. Battery lasts over 2 days so far and stil dont need to charge it. Vapeclub are the best online ecig store i have found and will be using them from now on. Really good prices, fast delivery and excellent products. You have a loyal customer now :-)

By from peterborough

Perfect little mod (24 May 2016)

i got this mod after my mvp 3.0 died on me. the cool fire iv plus has got great battery life, very quick charging (flat to full in 2 1/2 hours with 5v/2a charging), very easy to use, incredible form factor it feels great to hold fits right in the palm of my hand and the curve fits right into the contours at the base of my fingers, after eyeballing the photos i honestly thought it would be bigger, but im glad it's not. the storm edition looks fantastic too, i am very impressed. i also thought the badge on the side would annoy me, but in person it's quite unobtrusive

i was originally going to wait till the tc100w came out, but im not really interested in the extra wattage or temp control (i usually vape at ~25w with kanthal .5ohm coils) so i decided to buy this mod instead, plus im not a massive fan of the speed stripes the tc100w has.

all in all im a very happy vaper

By from Salisbury

Cool fire 4 plus (21 May 2016)

Vape club what can I say but great price very fast delivery, but the cool fire 4 plus is a great piece of kit especially for a newbe like my self . Had the T22 before but wanted more and this is good step up , you can't go wrong it produces great flavour and pretty good clouds . If your looking to step up from a mouth to lung device this does both very well

By from Northern Ireland

Innokin Coolfire IV plus (15 April 2016)

My first upgrade to a MOD and I am not dissapointed, excellent packing created a good first impression, once opened I was greeted by an extremely well built device, easy assembly and clear instructions. Also with it came a new liquid to me which was recommended by Vape Clup which I will cover in a separate review. The innokin sits lovely in the hand and produces masses of vapour and very satisfying flavour from the juice. I am very pleased

The Customer service and delivery from Vape Club was first class as well.

I am also liking the reward points system, just one more reason to purchase from Vape Club.

All round 10/10.

  • We accept Visa, MasterCard, Amex
  • We accept Visa, MasterCard, Amex
  • We accept Visa, MasterCard, Amex