Innokin EZ Tube and Zenith Minimal Tank Review Featured Image

Innokin EZ Tube and Zenith Minimal Tank Review

Richard WinterMods Leave a Comment


Welcome to Vaping Hardware’s latest offering, this time we are reviewing the new Innokin EZ Tube which comes coupled with the new Zenith Minimal Tank.

Innokin EZ Tube in Crimson Red with the Zenith Minimal Tank in Black

With the ever increasing amount of disposables and pods that we’ve seen pass through our doors over the last couple of years, it’s a pleasure to get our hands on a mod with a 510 threaded tank that takes replaceable coils.

I am partial to tube mods as they remind me of the early days of vaping when we had lots of exciting and very well engineered mechanical mods. Sadly these mechanical mods are few and far between now (I still have all mine) but nevertheless, the EZ Tube kit brought those memories flooding back.

Innokin Nightfall Black EZ Tube Kit held in hand

The EZ Tube, coupled with the Zenith Minimal Tank, has been a real pleasure to review and I really love using it. The original Zenith tank has been around for a while now with great success. A couple of different upgrades have come since, but this Zenith Minimal tank is a new release, which as the title suggests, combines a minimalistic design at a cost effective price.

Innokin 0.8 ohm and 0.3 ohm Z-coils

What is great to see though is Innokin continue to use the Z coils in this tank. Having reviewed and used these coils previously in a few of their other kits, I knew they were going to perform really well. Our review on the Coolfire Z80 and Zenith II Tank covers the Z-Coils that come with this kit so feel free to take a look at that one too.

Anyway onto the matter at hand… let’s get stuck into the EZ Tube kit review.

Overview of the EZ Tube Kit

Innokin EZ Tube Kit in Crimson Red held in the hand

The Innokin EZ Tube kit is a Mouth-To-Lung (MTL) and Restricted-Direct-To-Lung (RDL) tube style device with an internal 2100mAh capacity battery and fires up to 40W. I would say this is also a Direct-To Lung (DTL) when using the 0.3 ohm coil. Variable wattage is controlled by a nifty rotating twist-to-adjust base which also includes an intuitive small OLED display.

OLED display on the bottom of the Innokin EZ Tube

In addition to this display there is also a color changing LED ring around the diameter of the EZ Tube just above the rotating variable wattage control that gives a real time visual indication of the remaining battery charge status.

LED Light ring just above the rotary dial switch on the Innokin EZ Tube

A Type-C USB charging port on the side of the EZ Tube body, specified as 5V/1.5A, will fully charge the 2100mAh battery in around 3 hours. Opposite this USB port is a square button that sits in the only recessed flat side of the EZ Tube that fires the device.

Innokin Zenith Minimal Tank

Coupled with the EZ Tube is the newly released Zenith Minimal Tank. It’s a quarter turn locking cap top-fill design with a fully adjustable bottom single airflow slot. It holds a maximum of 4ml (2ml EU version), has 3 different removable 510 drip tips and accepts the range of Innokin’s push fit Z coils that screw into the 510 threaded connector on the EZ Tube mod.

There are 8 different colors in the Innokin EZ Tube Kit range; Nightfall Black, Emerald Amethyst, Crimson Red, Indigo Lilac, Cerulean Blue, Lunar Grey, Sakura Pink and Silver Glow. The Zenith Minimum Tank comes in 4 colors; Rainbow, Stainless Steel, Gunmetal Grey and Vacuum Plated Black.

Innokin EZ Tube kit in Nightfall Black and Crimson Red against their packages

I would like to thank Alisa at Innokin for sending us two EZ Tube with the Zenith Minimal Tank kits for the purpose of this review. As always this review is completely unbiased and only contains my honest opinions based on my time using the supplied EZ Tube Kits. We may receive a small affiliate fee if you click of any of the buy links but at no extra cost to you.

Innokin EZ Tube Kit Review


Contents

Features and Specifications


EZ Tube Mod

  • Construction: Aluminium Alloy
  • Dimensions: 90mm High x 25mm Diameter (Note)
  • Weight: 72 grams
  • Input Voltage: 3.2V – 4.2V
  • Charging: Type-C USB 5V/1.5A
  • Charging Time: 3 Hours
  • Resistance Range: 0.3 – 3.5 ohms
  • Output Wattage: 6W – 40W
  • Output Voltage: 1V – 7.5V
  • Output Mode: Variable Wattage
  • Max Output Current: 15A
  • Battery Specification: Internal 2100mAh
  • Firing Mode: Push Button
  • Display: OLED Screen + Multi-coloured LED Ring
  • Cut-Off Time: 15 seconds
  • 8 Different Colors

Zenith Minimal Tank

  • Construction: Stainless Steel
  • Dimensions: 50mm (L) x 25mm (D) (including 510 pin and drip tip
    • 34mm high excluding 510 pin and 510 drip tip
  • Weight: 45 grams (including coil)
  • E-Liquid Capacity: 2ml (EU version), 4ml Standard
  • Coils: Innokin Z-Coil Plug and Play Range
  • Filling Method: Quarter Turn Top Fill
  • Drip Tip: 3x Different 510 Mouthpieces
  • Thread: 510 Connector (On Coil)
  • Airflow: Bottom Single Slot Variable
  • 4 Different Colors

Note: The combined height of the EZ Tube and the Zenith Minimal Tank is 136mm and the combined weight, including the pre-installed 0.8 ohm coil is 117 grams.

What’s in the Box?


Innokin EZ Tube Kit Whats In The Box
  • Innokin EZ Tube Mod
  • Zenith Minimal Tank (2ml or 4ml)
  • Innokin MTL Z-Coil 0.8 ohm (pre-installed)
  • Innokin RDL Z-Coil 0.3 ohm
  • Replacement PCTG Tube (2ml)
  • MTL 510 Drip Tip
  • RDL 510 Drip Tip
  • Wide Bore (DTL) 510 Drip Tip
  • Spare O-Ring Set
  • Type-C USB Charging Cable
  • Quick Start Guide
  • Warning Booklet
  • Tutorial QR Card
Innokin EZ Tube Kit Whats In The Box with all the spares showing

As you can see from the above kit contents, there are lots of spares included which is always nice to see.

EZ Tube Kit Packaging

Crimson Red and Nightfall Black EZ Tube Packages

I know I’ve mentioned this before in my other Innokin reviews, but I have to commend Innokin for continuing to use 100% recyclable cardboard for all their packaging. This also includes the spares which are housed in thick paper sachets.

The packaging box is a folded lift to open lid with a cardboard insert housing the EZ Tube with the Zenith Minimal Tank attached. Beneath the cardboard housing are two further boxes that contain the manuals and charging cable in one box and the spares in the other box.

Side View on the Innokin EZ Tube box showing the included color
Side view of the EZ Tube box showing designed by P. Busardo Vapingreek

All the outer surfaces of the box are plain buff colored with the exception of the colored sticker that wraps around half the box that forms a seal. This sticker shows the EZ Tube kit in the color you’ve chosen on the front of the box. The same color wrapped around one side showing the color name and also around the back which has a bar code and the authentication scratch and verify label.

Front view of the Innokin EZ Tube Packaging
Back view of the Innokin EZ Tube Packaging

The front of the packaging includes the main features; “MTL/RDL”, “Z-Coil Compatible”, “Max 40W Power Output”, “Wattage Adjustment” and “OLED Display” together with the standard nicotine warning. The reverse side of the packaging includes the package contents, the manufacturer’s details and the relevant safety and nicotine warnings.

Crimson Red EZ Tube against its packaging
Nightfall Black EZ Tube against its packaging

Overall size and dimensions of the packaging are 168mm high x 92mm wide x 47mm deep. As you can see from the photos the two colors we received for the purpose of our review are Crimson Red and Nightfall Black.

Preparing to Use the EZ Tube Kit


Innokin EZ Tube with the safety sticker over the Type-C charging port
Innokin EZ Tube with the safety sticker removed from the Type-C charging port

Once you remove the EZ Tube kit from the inner cardboard tray, remove the transparent film sticker that’s covering the Type-C charging port and stuck across the bottom half of the Zenith Minimal tank.

Innokin EZ Tube with the Zenith Minimal Tank with the red silicone protector on the 510 center pin
Innokin EZ Tube with the Zenith Minimal Tank with the red silicone protector removed from the 510 center pin

Unscrew the Zenith Minimal tank from the EZ Tube. There is a small red colored silicone cap that’s fitted over the center 510 threaded pin on the bottom of the Zenith Minimal tank. Remove this cap and discard.

Innokin Zenith Minimal tank with the airflow ring removed and the Z-coil being taken out

Now unscrew the airflow control ring from the bottom of the Zenith Minimal tank and pull out the pre-fitted 0.8 ohm Z-Coil. Prime the coil by dripping a few drops of e-liquid into the wicking ports of the coil. Reinsert the coil and refit the airflow control ring, then screw the tank back on to the EZ Tube.

Top cap removed from the Zenith Minimal tank with the E-liquid filling port visible

The Zenith Minimal tank will now have to be filled with e-liquid. Press down on the top cap and turn anti-clockwise (counter-clockwise) to remove the top cap to gain access to the filling port. Place the tip of your e-liquid bottle into the kidney bean shaped filling port, NOT the center hole and fill the tank with e-liquid.

Replace the quarter turn top cap and leave to stand for approximately 10-15 minutes before you first use the device. Do note that priming is only needed when you first use a new coil.

OLED on the base of the EZ Tube showing the minimum 6W displayed

The EZ Tube comes with a nominal charge but we do recommend fully charging the device before you first use it. Switch the EZ Tube on by pressing the fire button 3 times in quick succession. Set the wattage to its lowest value and take a few draws then gradually increase the wattage taking further draws until you reach your desired setting.

We’ve covered how to Charge, Fill and Adjust your EZ Tube kit in the relevant sections of this review. You can click on these hyperlinks if you want to go direct to these sections.

Innokin EZ Tube Kit Design and Appearance


EZ Tube Mod

EZ Tube on its side showing the fire button, rotary wattage control dial and the EZ Tube branding

As the name implies, the Innokin EZ Tube is a regulated tube mod made out of aluminium alloy measuring in at 90mm tall (excluding the tank), 25mm in diameter and weighing in at 72 grams. It’s powered by an internal 2100mAh capacity battery which is charged, using the supplied charging cable, via the Type-C USB port specified as 5V/1.5A on the side of the EZ Tube body.

Charging cable plugged into the EZ Tube

Charging time will take around 3 hours to fully charge the battery but it does have the added bonus of pass-through charging so you can vape while it’s being charged.

It’s a 6W – 40W variable wattage device which is adjusted by a rotating twist action base switch dial that alters the wattage in 0.5W steps from 6W – 20W and 1W steps from 20W – 40W.

OLED on the base of the EZ Tube adjusted to 7.5W

On the base of this switch dial is a small OLED display that shows the set wattage level and the remaining battery charge. As you fire the EZ Tube, this OLED display shows the duration of your draw and then switches back to the wattage/battery status.

EZ Tube showing the LED light ring illuminated in green

In addition to this OLED display, there is also a multi-colored LED ring that sits between the rotary dial and base of the EZ Tube that gives a bright visual indication of the battery status. Further details of the OLED and LED ring are covered in the Functionality section of this review.

Crimson Red and Nightfall black EX Tube bodies

On the opposite side to the USB charging port is a square 8.5mm fire button that sits within a 11mm wide flattened recess that stretches nearly the full length of the EZ Tube. A simple but ingenious idea as the fire button doesn’t protrude beyond the outer diameter of the Tube body.

This means the EZ Tube, when laid down on its side, can be rolled on a flat surface without the fire button coming into contact with the surface. The fire button has a positive click feel to it and doesn’t suffer from any button rattle.

Innokin's Zenith Minimal tank being unscrewed from the EZ Tube

At the top of the EZ Tube is the threaded 510 connector with a circular gold plated spring loaded center pin. The width of the top surface on the EZ Tube is 25mm so the Zenith Minimal tank fits perfectly. Tanks over this diameter will overhang if fitted.

Nightfall Black EZ Tube with the Zenith Minimal tank fitted
Close up view of the 510 center pin and branding on the EZ Tube

Innokin’s branding is kept to a minimum with the name of the device “EZ TUBE” written in silver lettering toward the bottom of the tube on the flat recess. When the Zenith Minimal tank is not attached, the 510 top plate has the markings “UKCA”, “CE”, “7.77Wh” and a waste disposable picture.

Because the EZ Tube is minimalistic in regards to its function, there are no menu settings to worry about. 3 clicks of the fire button turns the device on/off and 2 clicks of the fire button causes the wattage value to flash on the OLED display which is then adjusted using the rotary dial on the base of the EZ tube.

With regards to the safety features, the EZ provides the following:

  • 15 seconds timeout (vape cut-off)
  • Low battery voltage (3.2V)
  • Overcharge protection
  • High temperature protection
  • No coil/atomizer detected
  • Short circuit and low resistance cut-off

The multi-colored LED ring provides the discharge status of the 2100mAh capacity internal battery as follows:

  • Red:     <10%
  • Yellow:  10%-30%
  • Green:  >30%

This LED light ring also provides a visual indication with multiple flashes and different colors which we’ve detailed in the Functionality section of this review.

The 8 different colors in the EZ Tube Kit range

The EZ Tube comes in 8 different colors and when purchased as a kit comes with the Zenith Minimal Tank which also comes in 4 different colors. The list below highlights those colors and also shows what the color of the Zenith tank will be when you chose the EZ Tube color:

EZ TubeZenith Minimal Tank
Nightfall BlackVacuum Plated Black
Emerald AmethystRainbow
Crimson RedVacuum Plated Black
Indigo LilacGunmetal Grey
Cerulean BlueGunmetal Grey
Lunar GreyGunmetal Grey
Sakura PinkStainless Steel
Silver GlowStainless Steel
Nightfall Black EZ Tube kit size against the hand

Overall the Innokin EZ Tube is quite a simplistic design with its functionality kept to a minimum. Yet despite this it feels very solid, robust and extremely well built. I do have a soft spot for tube (pen style) mods and will say that this is one of the best I’ve come across for a while now.

Zenith Minimal Tank

Zenith Minimal Tank
3 different drip tips and the drip tip opening in the Zenith Minimal tank

The new Zenith Minimal Tank is a cost effective and minimalistic addition to the already very popular Zenith tank range. Don’t be put off by the term minimal, it has 3 different replaceable 510 drip tips in the kit, is a quarter turn top fill design, has a fully adjustable bottom airflow control and takes the complete range of Innokin push fit Z-Coils.

Innokin Zenith Minimal tank with the MTL 510 drip tip fitted

Constructed out of stainless steel with a clear PCTG e-liquid reservoir, the Zenith Minimal tank is 50mm tall including the drip tip and has a threaded 510 pin, 34mm tall excluding the 510 pin and drip tip. The width of the tank is 25mm in diameter and the weight, including the pre-installed 0.8 ohm coil and a full tank of e-liquid is 47 grams.

Zenith Minimal tank with the top cap and MTL drip tip removed
Zenith Minimal tank with the top cap and MTL drip tip removed showing the kidney bean shaped e-liquid filling port

The Zenith Minimal tank has an e-liquid capacity of 2ml (EU version) or 4ml (standard version) and is a top fill design with a quarter turn lock/unlock twist operation. When the top cap is opened, there is a silicone rubber seal enclosing the fill port opening which you simply pass the tip of your e-liquid bottle through the seal to fill.

With silicone filling port membrane underneath the top cap of the Zenith Minimal tank

Printed onto the top fill cap are the symbols for lock and unlock indicating which way to turn the top cap to unlock for filling or lock to close. The e-liquid fill port is a decent sized (9mm) kidney bean shaped opening so there is no problem with short stubby e-liquid tips.

Close up view of the 2 tags and 2 slots of the top cap on the Zenith Minimal tank

To open the top cap, push down on the cap and turn anti-clockwise (counter-clockwise) a quarter turn and it will lift off. Refitting is done by aligning the two tags in the top cap with the two indents in the side of the top of the tank and turning clockwise until it locks.

Zenith Minimal tank showing the lock and unlock icons printed on the top cap of the Zenith Minimal tank
The 3 different drip tips supplied in the EZ Tube kit

An amber colored Ultem 510 removable MTL drip tip that comes fitted securely fits into the top cap with 2 O-Rings ensuring it won’t fall out. Included in the kit are two additional 510 drip tips for RDL/DTL vaping.

Zenith Minimal tank showing the 3 airflow control holes
Zenith Minimal tank showing the airflow fully open

Airflow is achieved by the bottom quarter turn adjustable single cyclops slot. The airflow can be adjusted anywhere from fully open for DTL vaping which opens the full cyclops slot or slowly closing it down to the three, two, or one small hole for RDL/MTL vaping. The resistance of the airflow ring is very good so it shouldn’t inadvertently move unless you turn it.

Z-Coil fitted into the Zenith Minimal tank with the airflow ring removed so you can see the threaded 510 pin on the Z-coil

Unscrewing and removing the bottom airflow ring anti-clockwise gives access to the Innokin push fit Z coils. Two coils are included in the EZ Tube kit and are KA1 (Kanthal);

Both the Z-coils supplied in the EZ Tube kit

Z 0.8 ohm coil: 15W-18W – Kanthal Mesh – MTL
Z 0.3 ohm coil: 30W-40W – Kanthal Mesh – RDL

Z-coil removed from the Zenith Minimal tank
Z-coil being inserted into the Zenith Minimal tank

These coils do NOT screw in but simply push in. Two flat indents on the coil locate into the two flat indents in the base of the tank section. Removal of the coil is again pulled and NOT screwed out from the tank. Do make sure you align the two flat indents otherwise the airflow ring won’t fit correctly and it will leak.

A really neat feature on the Innokin Z range of coils is the threaded 510 male connection that goes into the mod is part of the coil and NOT the base of the tank. Every time you replace the coil you’re effectively using a new threaded 510 screw connector.

Branding on the base of the Innokin Zenith Minimal tank

Branding is minimal with the words “INNOKIN” and “Z” etched into either side of the bottom airflow ring. Also the usual CE markings, along with “DESIGNED BY P.BUSARDO VAPINGREEK” and “Zenith Minimal” are etched into the bottom of the 510 pin base.

Zenith Minimal tank stripped down into its 6 different parts

Stripping down the Zenith Minimal tank is straightforward and it disassembles into 6 parts including the coil and 510 drip tip for easy cleaning and maintenance. Lots of spare O-Rings and a replacement e-liquid tube are included in the kit in case any on the tank gets damaged or lost.

View of the drip tips, spare PCTG tube and the different O-Rings supplied in the EZ Tube kit

Overall I am really impressed with everything about the Zenith Minimal tank. My initial thoughts were that it might be a cheaper version of the bigger Zenith tanks but this is NOT the case. I reviewed the Zenith II Tank when we reviewed the Coolfire Z80 back in 2021 and this Zenith Minimal Tank is equally as good.

Innokin EZ Tube Mod Functionality


Black and Red EZ Tube Kits

The Innokin EZ Tube is a variable wattage device although it does have limited functionality. Yes it’s a fully functioning mod with a good sized internal battery, an OLED display and an LED light ring which displays the current discharge status of the battery but it doesn’t come with any bells and whistles.

This is NOT a downside of the EZ Tube, quite the opposite in fact. It’s been designed this way with the aim of keeping things simple and straightforward for the end user… but not enough to compromise on performance.

A single button on the side of the EZ Tube fires the device and a rotating (twist to adjust) dial switch at the bottom of the EZ Tube adjusts the variable wattage.

Quick Start Operation

  • Fire button pressed 3 times turns the device on or off
  • Fire button pressed 2 times allows the wattage to be adjusted
Base of the EZ Tube showing the OLED display set to 6W
Base of the EZ Tube showing the OLED display set to 40W

A small single color (white) OLED display on the base of the EZ Tube, measuring 10mm by 4mm, displays a battery icon with a maximum of 4 white bars within the battery. This roughly equates to each bar representing 25% of the remaining battery capacity. A numerical readout of the set wattage is displayed and adjustable from 6W – 40W.

When the fire button is pressed, the OLED wattage display switches to a vape time duration reading (seconds) and will remain in this state for approximately 1 second after the fire button is released and then switches back to the wattage reading.

One thing I would have liked to see on the OLED display would have been a coil resistance reading. While it’s not important I did find when using both the supplied kits with different coils in each, I could only tell which coil was in each mod by the color of the coil (0.3 ohm = Gold, 0.8 ohm = Silver).

Multi-colored LED light ring just above the rotary dial on the EZ Tube

In addition to this OLED display is the LED light ring, just above the rotating dial switch, that also highlights the current discharge status of the battery when the fire button is pressed. The color of this LED light ring depends of the battery level as follows:

  • Green:   >30%
  • Yellow:  10%-30%
  • Red:      <10%

A combination of the OLED display and the multi-color LED light ring will highlight the safety features and prompts as follows:

  • Vape Time Out (15s): OLED displays —-, LED flashes Red 10 times
  • Low Battery Voltage: OLED battery icon and LED flashes Red 8 times
  • Overcharge Protection: LED extinguishes
  • High Temperature Protection: OLED displays —-, LED flashes Red 10 times
  • No Coil/High Resistance: OLED displays —-, LED flashes Green
  • Short Circuit/Low Resistance: OLED displays —-, LED flashes Red 3 times + 3 times
  • While Charging: Red LED= <90%, Green LED= >90%, No LED= 100%

Increasing/Decreasing the Wattage Level

Press the fire button 2 times so the numerical wattage value on the OLED display starts to flash. While the display is flashing, turning the rotary dial clockwise will increase the wattage and anti-clockwise will decrease the wattage. If the wattage display stops flashing before you adjust the dial, you will have to press the fire button again twice to enter that function.

When you enter the wattage adjustment setting, the LED light ring will slowly flash in the different colors of the rainbow. Each turn of the rotary dial will adjust the wattage value in the following steps and the LED light ring will sequentially change color with every step change:

  • 6W – 20W:   0.5W steps
  • 20W – 40W: 1W steps

The wattage adjustment does a round robin so when you reach the maximum value, the next turn will take you to the minimum value and vise versa.

Innokin Zenith Minimal Tank Performance


0.8 ohm Z-coil showing 15W - 18W power range and 03 ohm Z-coil showing 30W - 40W power range

Two coils from the Innokin range of Z coils are supplied with the kit (0.3ohm and 0.8ohm) and both are Kanthal A1 mesh wire material. We have used these coils previously with very good results in the Zenith II tank when we reviewed the Coolfire Z80.

Top view of both Z-coils showing the mesh wire

The flavor and vapor from these coils, even when using them below the minimum recommended wattage is very good. From previous experience, the longevity of these coils is excellent as they really do last well over a month if used sensibly.

I always find it best, when first using a new coil, to drip some e-liquid into the wicking ports then fill the tank up with e-liquid and leave to stand for 10-15 minutes before using. Set the wattage to the lowest setting (6W) and take a few draws to pull e-liquid through the coil. Increase the wattage by a couple of watts, each time taking a few more draws until you reach the wattage level you are happy with.

Both of the Z coils have the coil resistance and the minimum and maximum recommended wattage range stamped on the coil casing. I would never exceed the maximum wattage rating for the coil and more often than not I vape under the minimum wattage recommended for the coil.

Z 0.3 Ohm Coil

Innokin specify the wattage range is between 30W-40W. Best at 35W and suitable for RDL/DTL. The color of this coil is gold. I found that 35W, although producing great results was too high for me as I prefer a long, smooth draw.

Gold colored 03 ohm Z-coil showing 30W - 40W power range

I’ve listed below the different wattage settings and airflow I tried and recorded the results:

  • Set to 6W: Hardly any draw with no vapor
  • 10W: Starting to draw and limited flavor and vapor present
  • 15W: A slow draw with good flavor and vapor
  • 18W: A really nice draw with plenty of flavor and nice dense vapor
  • 25W: A shorter draw needed producing lots of flavor and vapor
  • 30W: A short 1 second draw produces great results
  • 35W-40W: Intense!
  • Airflow Open: DTL vape
  • Airflow Half Open (3 holes): RDL
  • Airflow showing 1 hole: A MTL draw

My sweet spot for this coil was around 15W-18W with the airflow fully open which gave me a nice 3 second DTL draw with plenty of flavor and vapor. Restricting the airflow for a RDL draw did require the wattage to be increased to 20W+ to match the performance.

Longevity of the coil is really good as I’ve used these before in other Innokin devices. On average I found that I achieved around 1 month of vaping before I noticed a drop off in performance.

Z 0.8 Ohm Coil

Innokin specify the wattage range is between 15W-18W. Suitable for MTL. The color of this coil is silver.

Silver colored 08 ohm Z-coil showing 15W - 18W power range

As I did on the above 0.3 ohm coil, I’ve listed below the different wattage settings and airflow I tried and recorded the results:

  • Set to 6W: Hardly any draw with no vapor
  • 8W: Starting to draw with minimal flavor and vapor
  • 10W: A slow draw with good flavor and vapor
  • 13W: A really nice draw with plenty of flavor and vapor
  • 15W: A shorter draw needed, great flavor with decent vapor
  • 18W: A great vape all round
  • Airflow Open: RDL draw
  • Airflow Half Open (3 holes): Airy MTL draw
  • Airflow showing 1 hole: A tight MTL draw
  • Airflow closed: No draw

My sweet spot for this coil was around 13W-15W. I do prefer a RDL draw with this coil with the airflow fully open which gives a lovely 3 second DTL draw with plenty of flavor and vapor. Restricting the airflow to 3 holes gives a really nice airy (loose) MTL draw, 1 hole showing really tightens the draw.

Flavor wise this coil really did perform very well. The flavor was very impressive, still definitely one of the best MTL coils I’ve come across. Longevity of this coil is again really good. I’ve used these coils before for well over a month with no loss of flavor or vapor.

One word of caution! Because the EZ Tube doesn’t have smart coil detect, it doesn’t limit the maximum recommended wattage to the coil. If you take this coil above 20W or higher it will effect its working lifetime or even destroy the coil.

Any Leaks?

Throughout my time using the Zenith Minimal tank there was no evidence of any leaks when using either of the supplied coils. The only condensation observed was under the top cap around the filling port but this was minimal.

Innokin EZ Tube Battery Performance


The EZ Tube is powered by an internal 2100mAh capacity battery which is a decent size for this type of device. It does come with a nominal charge but I would recommend fully charging the battery first before you use it. Our How to Charge section covers what you can expect when charging the EZ Tube.

Battery performance is always subjective and depends on the power (wattage) you vape at, the type of coil you’re using and your vaping style.

On average I was achieving an impressive 15 hours vaping time before the battery cut-out while using the 0.3 ohm coil at 14W. This time was very similar when using the 0.8 ohm coil at 16W.

The EZ Tube indicates the status of the battery on the OLED display and from the LED light ring so you can keep an eye on the remaining charge of your battery. The battery icon bars will reduce in size and the LED light ring will change color as the charge diminishes:

  • Greater than 30% of remaining charge = Green
  • 10% – 30% of remaining charge = Yellow
  • Less than 10% of remaining charge = Red

Once the battery is depleted of its charge, the EZ Tube LED light ring will flash red 8 times and the battery icon on the OLED display will also flash. Continuing to vape in this condition will switch the device off.

I recorded the approximate vaping times between each stage of color change when using the 0.3 ohm pod with the wattage set to 14W. Please be aware that the vaping times I recorded below are only a guide as my vaping style may be different from others:

  • Green – Yellow:           7 hours
  • Yellow – Red:               4 hours
  • Red – Shutdown:         4 hours
  • Total vape time between charges is 15 hours

I’m really pleased to see that once the LED light ring turns red you don’t have to panic to race to a charger!

How do I Fill the Innokin Zenith Minimal Tank?


Top view of the e-liquid filling port on the Zenith Minimal tank

The Zenith Minimal tank has a quarter turn removable locking top cap that once removed gives access to the filling port. Printed on this top cap are two padlock symbols, one locked and the other unlocked with directional arrows highlighting which way to turn.

How to fill the Zenith Minimal tank

To remove this top cap, press down on the cap and twist anti-clockwise a quarter turn and the cap will then lift off. The filling port is the kidney bean shaped opening that’s covered with a silicone membrane. Pass the tip of your e-liquid bottle through the opening of the silicone rubber seal and fill the Zenith Minimal tank with your e-liquid.

Zenith Minimal tank filled with e-liquid

Once filled, remove the e-liquid bottle from the filling port. Place the top cap back on the tank and locate the two tags on the inside of the cap with the two slots in the outer edge of the tank. The top cap will then slide down into position. Press down on the top cap and rotate clockwise a quarter turn and it will lock into position.

Quick Tip: If you are filling the tank for the first time, drip a few drops of e liquid onto the wick of the coil first. Push the coil into the base of the tank then fill and leave to stand for approx. 10-15 minutes before you start to vape. This will help saturate the wick fully in e-liquid and help prolong the life of your coil.

How do I Change the Coil in the Zenith Minimal Tank?


Unscrew the Zenith Minimal tank from the EZ Tube mod. Ensure your tank is empty of e-liquid before you try to disassemble the tank otherwise you will have e-liquid spilling out.

How to change the Z-coil in the Zenith Minimal tank

Grasp the main body of the tank and turn the airflow control ring to the closed position. Continue turning to slowly unscrew the airflow ring from the base of the tank and lift away.

The Z coils are a push fit type therefore simply pull the coil out from the base of the tank and replace with a new one. Removing the coil is easiest by grasping the threaded 510 connector at the bottom of the coil.

When replacing the coil, ensure the two flat sides on the coil line up with the two indents in the base of the tank so it fully locates into the tank opening. Once the coil is located it shouldn’t turn.

Reconnect the airflow ring to the main tank body and carefully screw the two sections together. Make sure you don’t overtighten but make a firm seal.

Do ensure that your new coil is primed and when filled, left to stand for 15 minutes so the e-liquid fully saturates the wick. See our guide on Prolonging the Life of your Coil.

How do I Charge the Innokin EZ Tube Mod?


How to charge the Zenith Minimal tank

Because the EZ Tube has an internal battery, charging can only be carried out using the supplied USB to Type-C charging cable. Simply connect the cable into the Type-C port on the EZ Tube body and the other end into a suitable USB power source.

The specified charging circuit of the EZ Tube is 5V/1.5A. If you’re using a lower current source than 1.5A it will charge at a slightly slower rate.

Red LED light ring illuminated while the EZ Tube is being charged

When the EZ Tube is first placed on charge, the OLED display will flash for 3 seconds then extinguish and the LED light ring will illuminate Red. The LED light ring will remain illuminated throughout the charging cycle and will change color as the battery charge increases:

  • Red = Less than 90%
  • Green = Greater than 90%
  • No Color = Fully charged

For reference, I monitored the timings it took for the LED to change color at each stage of charging when charged from a 5V/2A power source:

  • Red LED for 1 hour 45 minutes
  • Green LED for a further 1 hour 15 minutes
  • No Color indicates full charge is reached

Charging time takes 3 hours to fully charge the battery which is much longer than I was expecting. Once the LED turned green I would have assumed the LED light ring would extinguish after about 15 minutes. I did repeat charging the EZ Tube a few times and the charging time was roughly the same.

I did observe that after approx. 15 minutes of the LED turning green, the body of the EZ Tube was no longer warm which indicated that it had stopped charging even though the green light was still illuminated.

The EZ Tube does have pass-through therefore you are able to charge and vape at the same time.

During the charging cycle, the body of the EZ Tube does get warm to the touch. I would recommend charging this and any other vape mod or pod on a non-flammable surface.

As with any vape device, NEVER leave your mod unattended whilst charging.

Innokin EZ Tube Kit Price


Expect to pay around £32 for the EZ Tube kit. It comes with a full set of spares, 2x Z-coils, 3x different drip tips and a spare PCTG tank tube including O-rings. The kit includes the new Zenith Minimal tank which is a great tank and the EZ Tube mod looks great and performs really well.

This kit, coupled with the range of different Z-coils give the perfect MTL, RDL and DTL draw. I loved it from the minute I unboxed it and have not been able to put it down since.

Innokin EZ Tube Kit Verdict


Innokin EZ Tube Kit Review Verdict

Pros

  • Great set of spares in the kit
  • Good build quality and design
  • Great mod and tank combo
  • OLED and LED light ring displays
  • Variable wattage
  • Type-C charging (1.5A)
  • Impressive battery life
  • Pass-through vaping
  • No button rattle
  • Comfortable to hold
  • Great performance from both Z-coils
  • Compatible with all Z-coils
  • Very good flavor and vapor
  • Very good adjustable airflow for MTL/RDL/DTL

Cons

  • Long battery charging time
  • Limited display information

Innokin EZ Tube Kit Summary

Both EZ Tube Kits supplied to Vapinghardware to review

The Innokin EZ Tube coupled with the Zenith Minimal tank is a great combination of performance verses simplicity. Considering the relatively small price tag of the kit, the amount of spares included make this an absolute bargain.

While the EZ Tube is limited in its functionality and display information, it certainly makes up for this with its build quality and looks. Variable wattage up to 40W with a 2100mAh capacity battery and impressive battery life make this a great, minimalistic, easy to use mod.

Performance and versatility of the Zenith Minimal tank, with its variable airflow control, locking top cap, top fill port and replaceable Z-coils make this a great performing tank.

Whether you’re a MTL, RDL or DTL vaper, the EZ Tube with the Zenith Minimal tank caters for all styles of draw and does it really well too.

EZ Tube kit with all its spares

With the onslaught of Pods and Disposables over the last couple of years, it’s great to see a new Mod and Tank come out that challenges the simplicity of these while offering all the benefits of a mod and tank combination. I really do think the EZ Tube kit will be an instant success and for me personally I love the tube style.

Hope you enjoyed this review on the Innokin EZ Tube kit and found it useful. If you have any questions or feedback, please feel free to leave us a comment below. If you do purchase one, please do drop us a comment and let us know how you’re getting on with it.

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