The soon to be released Innokin Coolfire Ultra kit shows once again that this vaping powerhouse has adopted a tiptoe approach to the high wattage wars.

CoolFire-ULTRA kit

As other major players in the vaping game continue to push the boundaries with more powerful mods and tanks Innokin has erred on the side of safety.

The recent launch of the Scion tank capable of operating up to 200 watts should have been a clue as to what the Innokin Coolfire Ultra could do.

The Next Generation Coolfire Mod With More Power and Cool Features

Surprisingly – or knowing Innokin maybe not so surprising – the Coolfire Ultra maxes out at just 150 watts.

However my review of the Innokin Scion tank recently told me unless you like hot – and I mean hot vapes – the Scion tank was ‘happy’ at around 130watts on the lower resistance coil.

So the Ultra and the Scion should be a match made in heaven.

Anyway we’ll get into all that in a moment.

I’m a massive fan of the Coolfire series and the Coolfire 4 TC 100 was my first higher wattage mod and my first entry into sub ohm vaping.

Since then I’ve reviewed the Coolfire Mini – which I adored so I was more than happy to get my hands on the latest in the Coolfire series.

Call me a fan-boy if you want but what can I say, Coolfire vape mods are solid performers and good to use devices 😉

It’s quite a long review as there’s a lot to pack in!

OK this was sent to me for the purpose of this review direct from Innokin – so thanks to them – and as always my views and opinions are my own.

Inside the Box

There’s a white sleeve with the image of the Innokin Coolfire Ultra on the front – a schematic of the kit on the back plus your usual scratch and authenticate sticker.

It looks like I received a kit aimed at the US market as there’s an FDA warning rather than the over the top EU/TPD warning.

Slide the cover off and you have the classy solid black box with the silver etching on the front with the kit contents – obviously – inside.

Kit contents:

  • 1 x Innokin CoolFire Ultra mod
  • 1 x Innokin Scion Sub-Ohm Tank
  • 1 x Innokin Scion Kanthal Triple BVC 0.5ohm Atomizer Head (Pre-installed)
  • 1 x Innokin Scion Kanthal Single Parallel BVC 0.28ohm Atomizer Head
  • 1 x Replacement Bulb Glass
  • 1 x Micro USB Cable
  • 1 x Silicone Case
  • 1 x Set of O-Rings

coolfire ultra kit box contents

Plenty in there and great to see a spare coil 😉

Innokin Coolfire Ultra Specs

  • Aethon Temperature Control Chipset
  • Dimensions: length – 89mm width – 51mm
  • 510 Threaded
  • Battery Capacity: Built-in 4000mAh Battery
  • Operating Wattage: 6.0 – 150.0 W
  • Temperature Control: Nickel (Ni200), Titanium (Ti), Stainless Steel 316 (SS316)
  • Temperature Range: 150 – 315C / 300 – 600F
  • Minimum Resistance: 0.1ohm
  • Recommend Resistance for TC Mode: Ni200 (0.1 – 1.0ohm), Ti (0.1 – 0.5ohm), SS316L (0.2 – 0.5ohm)
  • Maximum Working Current: 30A
  • Maximum Output Voltage: 7.5V
  • Charged via Micro USB 5V/2A
  • Direct Current – Steady Power Output
  • Ultra Low External Heat Generation
  • Dry Hit Detection and Prevention
  • Ultra Low Standby Power Consumption

coolfire ultra kit specs

Scion Tank Specs

  • Dimensions: 2-1/8″ x 15/16″ (Including Drip Tip and Threads)
  • Diameter: 24mm
  • 510 Threaded
  • 3.5ml e-Liquid Capacity
  • Convenient Top Fill Design
  • Sleek and Compact Design
  • Glass Tank
  • Stainless Steel Construction
  • Dual Airflow Slots
  • Adjustable Airflow Control Valve
  • Wide Bore Delrin Drip Tip
  • Utilizes Innokin Scion Kanthal BVC (Bottom Vertical Coil) Atomizer Heads for Variable Wattage
  • Includes (1) Scion Kanthal Triple BVC 0.5ohm Atomizer Head (70 – 110W)
  • Includes (1) Scion Kanthal Single Parallel BVC 0.28ohm Atomizer Head (100 – 200W)

scion tank innokin

Key Features

First up I’m reviewing the full kit – the Coolfire Ultra and the Scion tank.

You can also buy the Innokin CoolFire Ultra mod on it’s own, minus the tank.

coolfire ultra and scion tank kit

I’ve already reviewed the Scion tank – but will of course touch on it in this review.

OK the Coolfire Ultra has a powerful internal 4000mAh battery with 2amp Quick Charge and tops out at 150 watts.

It’s controlled by the AETHON chipset which Innokin claims offers almost instant firing [0.2 seconds from click to vape] and precise temperature control.

The CF Ultra has a nifty Pre-Boost Ramp Up option which you can tailor to the tank and coil you’re using.

In other words you might want to zap the coil with higher or lower wattage to get it heated up quicker. Also known as ramp up time.

It’s set to 150watts by default and can be lowered via the menu which I’ll mention shortly.

I’m finding it much lighter than the TC 100 and a tad longer and it fits wonderfully in the hand.

ultra and tc100
TC 100 and Ultra Compared

Gone is the shiny paint job and is replaced by a very nice to touch matt effect – the logo and ‘go faster stripe’ remains.

I received the black version and blue – red and white will also be available.

The Scion Tank

It’s a 24mm tank and on top of the Innokin CoolFire Ultra there’s no real hang over at all and it screws into the mod with no gap.

The kit comes with:

  • Scion Kanthal Triple BVC 0.5ohm Atomizer Head (70 – 110W) installed
  • Spare 0.28ohm coil (100 – 200W) inside the box.

Depending on the kit colour you choose the Scion tank comes in black – stainless steel and white.

Filling the Scion Tank

It’s a simple top fill and a case of unscrewing the mouthpiece – not the top cap with the Scion logo on!

How to fill the Innokin Scion tank

There are 3 generous sized kidney shaped fill ports that fit even the larger drippers and as already mentioned it has a 3.5ml capacity and still no word from Innokin if there’s to be a TPD friendly 2ml version.

Swapping the Scion Tank Coils

Coils can be changed with e-liquid still in the tank.

It’s a simple matter of turning it upside down – unscrewing the base and removing the coil before priming and replacing it.

For more info about the tank and a more detailed ‘quick start guide’ please refer to my review HERE.

Design and Build Quality

As you might expect from Innokin the build quality is superb – it really doesn’t get much better than this.

The mod is light but solid and it may just be me but the OLED screen seems crisper and brighter – and no I haven’t upgraded my reading glasses!

coolfire ultra 150 watts

The fire button is responsive and for me at least in the perfect position whilst the up and down buttons are now side by side rather than on top of each other.

There’s no annoying button rattle either!

The USB port is in the same place as the TC100 – on the front – and pass-through vaping is available [vaping whilst charging] – and there’s plenty of battery venting on the rear of the device.

I’ve always found the design of the Coolfire’s pleasing and the CF Ultra is no different – it looks good and feels great in the hand.

How Does the Innokin Coolfire Ultra Kit Perform?

Out of the box and if you’ve used any of the Coolfire mods or kits you’ll be in familiar territory because everything here is pretty much the same – except we’ve got an extra 50 watts.

So first up let’s look at the basics with:

Coolfire Ultra Quick Start Guide

  • X3 clicks to turn on and off
  • Powered on the device remembers your last setting
  • If a new coil or tank added you’ll get coil mode selection screen
  • Choose same or scroll through options Ni – Ti – SS – Wattage
  • You can also enter coil mode selection via fire and + button
  • In wattage/power mode increase or decrease using + & – buttons
  • Increase and decrease in 0.5 watt increments
  • Hold + & – for 3 seconds to flip the screen

Pre-Boost Ramp Up

A nice little touch particularly if you need to get max power to certain coils and of course if you need to heat the coil gradually.

  • Hold Fire button and – button for 3 seconds
  • Ramp up wattage will flash in corner of the screen
  • Use + and – buttons to increase or decrease
  • Pre-Boost Ramp up is set to 150 watts [the max] by default

Temperature Control Features

Despite the Scion not coming with Temp Control coils the CF Ultra is packed with TC features including the ‘Dry Hit Prevention and Detection’ feature.

If you’re using a Ni – Ti – SS temperature control coil then follow the steps in the coil mode.

coolfire ultra coil mode

Once your coil is calibrated your temp can be increased and decreased via the + and – buttons to a minimum of 300F and a max of 600F [148c to 315c].

OK and yeah who forgot some temp control wire again!

So to test the dry hit and prevention feature I once again emptied my Slipstream tank with a SS 316L coil.

I puffed away on the almost dry tank and could almost physically feel the power dropping with no burn taste or dreaded dry hits.

Based on that I can only say the Aethon chip is doing its job well.

How does the Coolfire Ultra Vape?

The fire time is indeed pretty much instantaneous and given I’ve already reviewed the Scion tank my thoughts on that hasn’t changed much.

In other words I still find 130 watts the sweet spot on the higher wattage coil and maxing out at 150 watts things get a little too warm for me.

innokin scion tank review

Flavour wise it’s good and the clouds are very good.

I did say in the tank review that I was getting a lot of hit and miss hits – this I can only put down to a dodgy batch of stock coils as with the ones in this kit wicking and flavour has been great with much better vapour production.

coolfire ultra 510 pin

My theory on the packet of silica to keep everything dry and therefore completely drying out unwrapped coils still stands as there’s none in this kit!

So yes I do think the Ultra and Scion are a good match especially as you can’t push the 200watt coil to its max which I think is too much for it to take – but that’s just my opinion.

What I Like

It’s only slightly longer and lighter but holding the TC 100 next to the Ultra and hands down I prefer the look and feel of the new device.

The matt finish is really touchy feely and grips nicely in the hand.

The fact Innokin has only added 50 watts might annoy some of you – particularly as the bigger coil can hit 200 watts – but I’m glad they haven’t joined the silly wattage wars.

Innokin has been big on safety and there’s a plethora of features inbuilt including short circuit protection – over discharge protection and overheat protection.

I like the menu and it’s intuitive and responds well and scrolling is super-fast.

As an established Coolfire user I have to say I like the Ultra – a lot.

What I Don’t Like

At a push and this is nit-picking – I’ve never really been a fan of the ‘go faster stripe’ emblazoned on the device.

However the TC100 had that raised badge logo whilst the Ultra has the logo etched into the device which slightly lessens the impact!

If you have larger tanks than 24mm then I’m afraid there may be some overhang.

Like I said nit-picking!

Final Review Verdict

Not much more to say other than in both wattage and temperature control mode the Innokin Coolfire Ultra vapes extremely well.

It’s ergonomic – light – looks good – especially with the Scion tank – and performs like a dream.

Any Coolfire user will enjoy it as will anyone looking for a solid well-built and nicely designed device without the need for separate batteries.

It took me about 90 minutes to fully charge once it had completely drained and I was getting 5 to 6 hours use at 125 watts – so not bad at all.


  • 4000mAH internal battery
  • Wattage and Temp Modes
  • Good battery longevity
  • Reasonably quick charging
  • Good safety features
  • Low standby power saver – goes to sleep saving battery life


  • Up to 24mm tanks otherwise some overhang
neil Humber 2
Neil Humber

I have simpler vape tastes these days - I never leave home without a Caliburn G, a Vaporesso Luxe 40 or Innokin EQ FLTR and a CBD vape pen or bottle of CBD drops in my rucksack...or indeed an Aspire Nautilus Prime X in my pocket... At home I'll be using various mods topped with the GeekVape Zeus X RTA or the Signature Mods Mono SQ topped with the Augvape BTFC RDA... I'm a former journalist and now a writer and sometimes author... I'm ex Army - adore dogs and never happier than hiking over the hills or with a good book on a beach.

Build Quality
Mod Functions
Ease of Use
Likelihood of Replacing
I have simpler vape tastes these days - I never leave home without a Caliburn G, a Vaporesso Luxe 40 or Innokin EQ FLTR and a CBD vape pen or bottle of CBD drops in my rucksack...or indeed an Aspire Nautilus Prime X in my pocket... At home I'll be using various mods topped with the GeekVape Zeus X RTA or the Signature Mods Mono SQ topped with the Augvape BTFC RDA... I'm a former journalist and now a writer and sometimes author... I'm ex Army - adore dogs and never happier than hiking over the hills or with a good book on a beach.
innokin-coolfire-ultra-reviewInnokin Coolfire fans and new users will love it - a great sub ohm vape kit - highly recommended.



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