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Innokin Cool Fire 4 (IV) Plus 70w Review



In Short: This kit contains:
  • 1 x Innokin Cool Fire 4 Plus 70W mod
  • 1 x iSub Apex Tank (0.5 Ohm)
  • 1 x Additional iSub coil (0.5 Ohm)
  • 1 x Additional O Rings
  • 1 x Micro-USB Charging Lead
View Product

Battery Life



Value For Money

Total Score



Excellent battery life
Great quality vape
Superb performance
OLED display
Great value for money
Vape whilst charging
Very easy to use
LED Battery Level Indicator
Best box mod under £50

Our Full Review

Product Update

There is an upgraded, more powerful version of this model. Please see the Innokin Cool Fire Ultra TC 150W.

The original Innokin Cool Fire 4 was a pretty tremendous box mod, combining great power and functionality that at the time seemed pretty tricky to imagine beating.

How times have changed! When the Chinese vape giant announced that they were planning on releasing a Cool Fire 4 Plus, it was hoped above anything that the battery would be upgraded.

The good news is that they have more than delivered on this, as well as added a couple of nice little new features that make this one of the best box mods on the market.

A 3300mah Battery Provides Days Of Vaping!

Let’s begin with the most important new feature.

The original Cool Fire 4 packed an on paper pretty decent 2000mah battery – but the problem was that when configured to more demanding settings it had a tendency to run out of juice before bedtime.

Obviously, this was rather disappointing as a three-star battery really let down what otherwise could have been a five-star product.

Those worries are thankfully now old news. The Innokin Cool Fire 4 Plus packs a tremendous 3300mah battery that over testing has proven to be able to last a staggering 3 days on intensive settings, and even longer for more ‘middle of the road’ vaping.

Remaining battery charge is conveniently displayed on a smart OLED display and seems refreshingly accurate! Such is the quality of the battery alone that it provides justification for the upgrade from the old Cool Fire 4 edition.

Classy Build & Design Quality

There’s something a little more ‘rustic’ about the Cool Fire 4 Plus but by no means is this a bad thing.

Regardless of which colour you opt for, they are all finished with a faux wooden effect that certainly helps add a little extra grip, as well as providing a distinguished style to the mod.

It may not win any awards for beauty, but this is certainly a mod designed for effortless utility.

As for the control panel, navigation is much like any other style of mod. The display is simple yet clear and allows users to easily switch between power (70W) and coil resistance (0.1-3.5ohm).

These are pretty much the only user adjustable settings – but in all honesty, there’s not really much need for anything else. Temperature and short circuit safeguards are built in to the unit as per standard with such powerful devices.

A Tremendous Overall Vape

Now to the nitty gritty! As standard, the kit contains a 4.5ml iSub G Tank although apparently, users can instead opt for an iSub Apex tank when checking out their purchase. Two 0.5ohm coil heads are also included, meaning that the obvious place to start with putting the Innokin Cool Fire 4 Plus through its paces was on more demanding settings.

Even straight from the box, this mod provided awesome cloud production with a high VG e-liquid.

Despite near constant use over the day (enough to drain the majority of other mods), this stood up to the test exactly as hoped – with not a single dry hit or sense of overheating.

The same can also be said for enjoying a more casual vape, with lower voltage settings delivering well with more standard, off the shelf liquids.

As an overall package, this mod is a cracking option for both on-the-go and more luxuriant vaping.

We really cannot stress enough how essential that 3300mah battery is to the overall quality of this product.

All too often the vaping community skips over how important battery life can be for actually enjoying a vape that isn’t going to conk out after a short period of use.

The handy pass-through charging also makes this great for those tied to their desk for eight hours a day.


Innokin have listened to their customers and delivered an upgrade on one of their most popular products that’s truly worthy of the label.

For the price point and overall quality, we’d expect many of Innokin’s rivals to try and emulate this in the near future.

Are there any downsides? As with any high power mod, the coils will need changing every 7-10 days (you will use this mod a lot!) but that’s hardly unusual.

Otherwise, it’s very difficult to nitpick for any significant issues.

Overall this is a top quality, great value device given its price point. Very highly recommended indeed!


Click REVEAL COUPON to view the discount code. Simply enter code at checkout.


Click REVEAL COUPON to view the discount code. Simply enter code at checkout.