Cool Fire IV 75W TC 18650 kit is Innokin’s latest addition to the ever popular Cool Fire 4 family. Responding to the vaper’s requests, Innokin have produced this kit which is powered by the ultra-fast and accurate AETHON temperature control board, runs on a single removable 18650 battery and delivers 75 Watt with temperature control!

Cool Fire 4 TC18650 is compact, durable and ultra-fast at 0.2 seconds from Click to Vape! With a spare battery this device is truly an all-day vaping device - vape on!

Cool Fire IV TC 18650 Kit All Colors

Like its predecessor TC100 or the Plus, this kit is sleek, stylish and gives you precise temperature control with its AETHON chipset. It’s perfect with the 5th generation iSub V tank and any one of your favourite Titanium, Ni200 or stainless steel coils.

 Cool Fire IV TC 18650 Kit

Note: Cool Fire 4 TC 18650 does not ship with the external 18650 battery. If you’re interested in an integrated battery then kindly consider the Cool Fire 4 TC100 kit.


  • Features the AETHON Temperature Control BoardUltra-Fast response: .2 seconds from Click to Vapour!
  • Operating Wattage: 6.0 - 75.0 W
  • Temperature Control: Nickel (Ni200), Titanium (Ti), Stainless Steel 316 (SS316)
  • Temperature Range: 150-315°C / 300-600°F
  • Recommend Resistance for TC Mode: Ni200 (0.1 - 0.2ohm), Ti (0.1 - 0.5ohm), SS316L (0.2 - 1.0ohm)
  • Sub-OhmMinimum Resistance: 0.1ohm
  • Requires (1) High Amp 18650 Battery (Sold Separately)
  • Requires an External Charger (Sold Separately)
  • Maximum Working Current: 27.5A
  • Maximum Output Voltage: 7.5V
  • Direct Current - Steady Power Output
  • Balanced Even Coil Heat-Up
  • Ultra-Low External Heat Generation
  • Dry Hit Detection and Prevention
  • 510 Threaded
  • Ultra Low Standby Power Consumption

Cool Fire IV TC 18650 Express Kit


  • 3.0ml e-Liquid Capacity
  • Quick & Clean Top-Fill
  • Fully Adjustable Airflow
  • No Spill Coil Swap System
  • 100% Stainless Steel
  • Removable Delrin Drip Tip
  • Replaceable Glass Tank
  • Includes (1) KAL (Kanthal) BVC 0.5ohm for Variable Wattage
  • Includes (1) Stainless Steel 316L BVC 0.5ohm Atomizer Head for Variable Wattage or SS316 Temperature Control Mode

Innokin iSub V Tank 


Innokin’s packaging is second to none, you know exactly what you’re getting just by seeing the box. With this kit, you’ll be getting 

  • 1 x Innokin Coolfire 4 TC18650 75W
  • 1 x Innokin iSubV Tank
  • 1 x iSub SS316L BVC 0.5ohm Atomizer Head
  • 1 x iSub KAL BVC 0.5ohm Atomizer Head
  • 1 x Silicone Battery Sleeve
  • 1 x Tank Band
  • 1 x Set of Spare O-rings
  • 1 x Instruction manual


Cool Fire 4 TC 18650 75W does not come with any batteries and that’s the beauty of it. No fixed battery means two things:

  • You can have one 18650 battery on charge while you’re using the other one, and
  • No more replacing the mod when the battery performance declines – simply replace the removable 18650

It also boasts 75W up from the Cool Fire Plus but still less than the TC100 and will fire all three types of coils (Ni200, SS and Ti), pleasing more vapers. 

It also comes both as a whole kit and as an Express kit, meaning you only need to invest in the Mod if you already have the iSub V tank. 

For now this is all, until the kit arrives. Once we have our eager hands on this device we’ll update the review in full.


Cool Fire 4 TC 18650 promises a lot, let’s wait and see if it lives up to the hype.