Cool Fire IV PLUS is ever so slightly chunkier and heavier than its predecessor, but then Innokin listened to their customers and have provided a larger battery capacity, higher wattage and of course the ability to fire down to a lower resistance. At present this Kit comes in two choices either the iSub G Tank or iSub Apex tank.


Cool Fire IV Plus with iSub G

Cool Fire IV with iSub G Tank

Cool Fire IV Plus with iSub Apex

Cool Fire IV with iSub Apex Tank


Note, the PLUS does NOT come with Temperature Control (TC) and if you’re interested in you need to consider either Innokin’s Cortex Kit or Innokin’s latest Cool Fire IV TC100 Kit.

Features of Cool Fire IX PLUS Kit

  • Minimum Resistance: 0.1 ohm
  • Built-In 3300mAh Battery
  • Passthrough Compatibility
  • Battery Level Indicator
  • OLED Screen
  • Micro-USB Charging Port
  • Spring Loaded/Stainless Steel 510 Thread
  • Standby Current: 100uA Max
  • Maximum output Wattage: 70W
  • Maximum output Current: 26.5A
  • Maximum output Voltage: 7.5V
  • Colors: Black, Red, Blue & Silver
  • Supports 5V/2A fast charging (charger not included)



Innokin packaging is as always well designed with all the information you’d need to quickly come to terms with this new kit. The Kit also has the usual scratch and check features to verify the authenticity of your device and vape with peace of mind.

Inside the box you’ll get:

  • 1 x Cool Fire IV Plus battery
  • 1 x iSub Apex or iSub G Sub Ohm Tank
  • 1 x extra iSub coil (0.5 ohm)
  • 1 x Micro USB cable
  • 1 x Instruction Manual


Cool Fire IV Plus Contents



The newer PLUS comes with 3300mAh battery capacity as opposed to the 2000mAh the original mod had. It also boasts 70W up from 40W of the original and can fire down to 0.1ohm instead of the 0.3 ohm the original one did. Moreover the Plus also has a larger, clearer OLED screen and though its battery life is much better, the pass-through charging means you can vape while it’s on charge.

 All in all it has the much needed features necessary in the ever moving market but is it also stylish?


Cool Fire IV Plus Red Cool Fire IV Plus
Cool Fire IV Plus Cool Fire IV Plus


 Is it Stylish?

The original Cool Fire was really nice, compact, and sleek device to have while roaming around vaping. As mentioned the newer PLUS is chunkier which usually equates to less in looks but surprisingly Innokin have managed to make this Mod even sleeker. The extra weight and thickness feels good in the hand and fits well in the palm while vaping.

As the market has come to expect, the build quality from Innokin is of high quality. The mod feels solid and everything, the buttons, the 510 connection all feel well made.

The main feature of 70w is easy to use and will appeal to many who want a slightly more powerful mod without the TC functionality.



In the ever changing vaping market where higher power and lower resistances are always welcomed the PLUS proves to be a good Mod for those happy to move on from intermediate level to being more serious about vaping.

Cool Fire IV PLUS is a great mid-range Mod, that’s easy to use, built on its little brother (the Cool Fire 4) it boasts the same fabulous looks, with better battery life, and is well made. As mentioned for those who want that little bit more but are not ready for TC this is a great Mod to advance to.

Finally though pricier than its competitors and its little brother (the original Cool Fire 4l) the PLUS is well worth the money especially with the build quality, reliability, solid performance and the fabulous looks.