Cool Fire IV iSub VE Starter Kit Our teams of expert engineers and designers have packed the Cool Fire 4 with the most advanced integrated vaping technologies to create the perfect compact Sub Ohm E-cigarette.

With 40W of vaping power, the CoolFire IV fires a full range of tank resistances and each is made with the highest quality materials to create a vaporizer that you can rely on!

The compact power, bright OLED display, long-lasting battery capacity, and easy to use menu system makes the Innokin CoolFire IV the ultimate compact vaporizer for 2015.

The CoolFire IV vapes perfectly with the Innokin iSub Apex & iSub-G Sub Ohm tanks.

 Cool Fire IV:

  • Powerful! Fires 6 – 40W! / 3 – 7.5 V with a Maximum Output of 14.5Amp!
  • Compact: Only 86mm / 3.93” Tall!
  • Long-lasting: 2000mAh hour battery!
  • Beautiful: Initially available in 6 vibrant and lasting finishes.
  • Intelligent: Vape Timer, Puff Counter, Integrated Short Circuit protection, Left/Right Screen Orientation, 15 Second cutoff & more.
  • Precise: RMS DC current accurate to a power deviation of 0.5W and fires resistances from 0.2 – 3.1Ohm.
  • Easy to use: 3 Buttons for Total, Precise, and Comfortable Control.
  • Always Ready: Charge the CoolFire IV with a standard Micro USB cable and vape at the same time with Innokin’s ‘Vape while charging’ technology.
  • The Cool Fire IV features a greater range of Variable Voltage, Variable Wattage, advanced safety features, portable electronics charging capacity, and also ‘Vape while charging’ Technology.

The Cool Fire IV has a flush 510 connection with a spring-loaded positive pin,
durable stainless steel threading, an included ego adaptor.

The Cool Fire IV has a variable voltage range of 3.0 – 7.5 volts adjustable in .1 volt increments and a variable wattage range of 6.0 – 40.0 Watts, adjustable in .5 watts increments.

The Cool Fire IV uses Vrms DC current and is very accurate with a power deviation of 0.1Watt. The full 40 Watts is precisely maintained between resistances of 0.3 to 2.5 Ohms. There is no wasted power and exact accuracy means you are always vaping the power level that you choose. Vrms provides superior precision in delivering the exact wattage Ohm’s Law requires and stable power means better vapor.

The high-quality OLED screen looks great and clearly displays the resistance of the attached tank & coil, voltage, wattage, and also accurately shows the remaining battery charge.

The Primary Features of The Cool Fire IV

  • Battery Level Indicator:
    The Cool Fire IV battery capacity is displayed via green, yellow, and red LED lights.
    Green = Almost fully Charged. When the Cool Fire4 is fully recharged the LED light will power off.
    Yellow = Half Power.
    Red = Low Power. Charge the Cool Fire IV
  • Variable Voltage:
    Voltage can be adjusted from 3.0 – 7.5 volts in .1 volt increments.
  • Variable Wattage:
    Wattage can be adjusted from 6.0 – 40.0 Watts in .5 watts increments
  • ON/OFF Battery Switch
  • SAFETY: 15-second cutoff
  • FLIP OLED SCREEN ORIENTATION
  • Low Voltage Warning
  • Short Circuit/Atomizer Protection
  • Over-Discharge Protection
  • ‘Vape while charging’ Technology
  • Remembers last Voltage or Wattage setting
  • Overheat Protection