Cool Fire IV Battery 40W Mod – Innokin


The CoolFire IV is a state of the art, high power, compact electronic cigarette battery in a “box mod” style.

The CoolFire IV is a state of the art, high power, compact electronic cigarette battery in a “box mod” style.

The Innokin CoolFire IV is a high power variable voltage / wattage device in a sleek comfortable design that fits perfectly in your hand. Featuring a massive battery capacity and the highest level of production quality and design, the CoolFire IV is THE battery recommended for those looking to upgrade from smaller “pen style” batteries, users wanting more power or those making the move to a variable voltage / wattage device.

High quality bright OLED display screen displays a range of information for your device. Current wattage / voltage setting, atomizer resistance, remaining battery charge display and battery voltage, puff counter, and puff timer.

The Cool Fire IV can be used in either variable voltage or variable wattage mode. Featuring a voltage range of 3.0 – 7.5 volts and variable wattage range of 6.0 – 40.0 Watts. Utilizing DC current to deliver precise power and accuracy to your chosen atomizer, consistent power delivery means consistent and stable vapour production.

A 510 connection with a spring loaded connection plate and durable stainless steel threading. Includes an ego adaptor for compatibility with any 510 atomizer or device.

“Pass-through” functionality allows you to use your device even while charging.

A 3 click on / 3 click off battery button as standard, with the addition of a safety power off switch on the base of the device.

Simple 3 button interface for easy use and precise control.

Battery Level Indicator: The Cool Fire IV displays your battery capacity via a green, yellow or red power button.

Green = more than 50% remaining.
Yellow = less than 50% remaining.
Red = less than 20% remaining, you should charge your Cool Fire IV.

When the Cool Fire IV is plugged in and charging a green power button indicates it is ready to be used in “vape while charging” mode. When fully charged the LED light will power off.



Innokin is a Shenzen based company founded in 2011. The goal of combining the latest technology, design, and also the highest standards of quality. The company has created the best electronic cigarettes and also advanced personal vaporizers in the world. Innokin is one of the original mass-producing vape companies. with a plethora of devices in their inventory. Below is a list of their products. Coolfire 40w kit - featuring a 40w adjustable built-in battery device crowned with an isub-v tank. Coolfire TC150 - featuring a 150w TC adjustable built-in device crowned with an isub-v tank. Z50 - featuring a built-in battery device with 50w adjustable power crowned with a zenith tank. T20s - a built-in battery pen device with the prism-s tank on top.


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