Innokin Ez Tube Zenith Minimal Vape Kit

Overview

The Innokin Ez Tube Zenith Minimal Vape Kit by Innokin across 8 flavours at 0mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Overview of the Innokin EZ Tube Zenith Minimal Vape Kit

The Innokin EZ Tube Zenith Minimal Vape Kit in Cerulean Blue is a slim, pen-style refillable starter kit built around Innokin's Zenith coil system. It is aimed at adults in the UK who want a straightforward mouth-to-lung (MTL) device: you fill a small tank with e-liquid, draw on it, and get a tight, cigarette-like inhale without menus, screens or wattage dials. The word Minimal in the name is a fair description of the approach. This is a stripped-back kit that concentrates on doing the basics reliably rather than stacking up features that most new vapers never touch.

Innokin has been making vaping hardware since 2011 and has a long record in the UK market, with ranges such as the Endura, Prism, Go Z and Zenith families. The Zenith name is linked to a compact plug-in coil and tank combination, and the EZ Tube takes that idea into a slimmer body that slips into a jacket pocket or a small bag without looking like a piece of equipment. If you have used a refillable pod kit before, the layout will feel familiar. If you are moving over from a disposable, the main change is that you now buy e-liquid separately and top the tank up yourself.

What you can expect from the kit in practice:

• A refillable tank rather than a sealed, throwaway cartridge, so you choose the e-liquid, the flavour and the nicotine strength.
• A replaceable Zenith-series coil that you swap when the flavour fades, rather than binning the whole device.
• A rechargeable internal battery that tops up from a USB cable, so there is no loose cell to buy or carry.
• A MTL draw that suits people who are used to the tight pull of a cigarette.

The Cerulean Blue finish is a cosmetic choice and does not change how the kit performs. This page walks through the specification, real-world performance, flavour, build, battery, coil technology, nicotine guidance, who the kit suits, how to use it, how to fix common problems and how it compares with similar devices. Please remember that vaping products contain nicotine, which is addictive. They are intended for adult smokers and existing vapers only, and it is illegal to sell them to anyone under 18 in the UK.

Specifications at a glance

Because the EZ Tube is a refillable kit rather than a disposable, there is no fixed puff count printed on the device. Instead, what matters is tank size, coil, battery and how you vape. The figures below are the practical specifications for this style of Innokin kit. Where a range is given rather than a single number, that is because manufacturers revise components between production batches; the product page and the pack in your hands are the final word.

• Kit type: refillable, pen-style MTL starter kit with a stripped-back, no-menu layout.
• Tank capacity: 2ml, which is the maximum size UK rules allow for a refillable tank.
• Coil system: replaceable Zenith-series plug-in coil, with the resistance printed on the coil itself.
• Draw style: mouth-to-lung, tight and slow rather than open and airy.
• Battery: slim internal rechargeable cell, typically in the region of a few hundred up to about 1,000 mAh for kits of this shape.
• Charging: by USB cable, normally taking around one to two hours from flat.
• E-liquid: any UK-legal nicotine e-liquid up to 20mg/ml, in nicotine salt or freebase form, with 50/50 or higher-PG blends working most smoothly.
• Estimated yield: roughly 400 to 600 puffs from one 2ml fill at typical MTL usage, depending on draw length and liquid.
• Colour: Cerulean Blue.
• Age restriction: 18 and over only.

The puff estimate is worth explaining. A typical MTL draw uses somewhere around 0.003 to 0.005ml of e-liquid, so a 2ml tank divides into the mid-hundreds of puffs. A 10ml bottle, the largest size on sale for nicotine e-liquid in the UK, therefore fills the tank about five times and gives you something like 2,000 to 3,000 puffs. That is a rough planning figure rather than a guarantee, but it gives a sensible way to compare the running cost against disposables, which we return to in the value section below.

Performance and vapour delivery

The EZ Tube is built for MTL vaping, and its performance should be judged on those terms. Do not expect the dense clouds of a sub-ohm kit. Vapour production is moderate, the throat hit is tighter and more cigarette-like, and the focus is on flavour and nicotine delivery per puff rather than volume. For someone stepping away from smoking, that is usually the point: the draw feels familiar, and the device does not shout about itself in public.

In everyday use, the kit warms up quickly and delivers a consistent puff from the first draw of a fresh tank through to the last. A few habits help it perform consistently:

• Draw slowly. A three to four second pull gives the coil time to heat the liquid evenly. Short, sharp puffs tend to give a thinner result.
• Space your puffs. Wait ten to twenty seconds between draws if you are chain vaping. This lets the wick refill and avoids a hot, harsh hit.
• Match the liquid to the coil. MTL coils wick more reliably with thinner, higher-PG liquids. Thick, very high-VG blends can starve a small coil and cause dry or muted puffs.
• Close down the airflow if you can. If your tank has an airflow ring or slot, a tighter setting gives a more cigarette-like hit and a more concentrated flavour.

On nicotine delivery, a 20mg/ml nicotine salt in a device like this tends to feel quite strong per puff, even at modest power. Freebase liquids at 6mg to 12mg often feel harsher on the throat but are gentler on total intake. This is why the choice of strength matters more on an MTL kit than on a high-power sub-ohm device, and we cover it in detail in the nicotine section.

Compared with a typical disposable, the main performance difference is consistency. Many disposables fade, taste muted, or cut out well before the advertised puff count, particularly in the last third. A refillable kit lets you refill the moment the tank is low and replace the coil when it is genuinely tired, so the last puff of the day should be much like the first. Expect to refill the tank once or twice a day if you vape steadily, or once every couple of days with lighter use.

Flavour profile and what to expect from the coil

The EZ Tube does not have a flavour of its own, because flavour comes entirely from the e-liquid you choose. What the hardware controls is how clearly that flavour comes through. MTL coils with a tight airflow path concentrate the vapour, so flavours tend to taste more defined and less diluted than they do on an open, airy sub-ohm device. Fruit, menthol and mint, tobacco and dessert profiles all work, though they behave a little differently.

• Fruit and ice: sharp, clean flavours such as berry, citrus or watermelon come through crisply. Cooling agents are noticeable and can feel slightly stronger at the tight end of the draw.
• Menthol and mint: these suit the MTL format well and are a common choice for people switching from menthol cigarettes.
• Tobacco: lighter tobacco profiles tend to taste better than very dark, heavy blends, which can mute on a small coil.
• Dessert and sweet blends: these are very popular but sweeteners leave residue on the coil, so expect the coil to wear faster than it would with fruit or menthol.

New coils benefit from a short break-in. Fill the tank, let the liquid soak into the cotton for around five to ten minutes, then take the first few draws gently. Some users notice a slightly papery or muted taste in the first tank, which usually clears as the wick settles. If the taste turns burnt or dull later on, that is a sign the coil is reaching the end of its life or has been run dry; see the troubleshooting section for what to do.

When you want to change flavour, the cleanest approach is to empty the tank, rinse it in lukewarm water, dry it fully, and fit a fresh coil if the old one has taken on the character of the previous liquid. Coils hold on to flavour, so switching from a strong menthol to a delicate fruit on the same coil often gives a muddy result. The Cerulean Blue colourway makes no difference to taste; it simply tells you which finish you are buying. If you enjoy changing flavours often, keeping a spare coil or two on hand makes the switch much more pleasant.

Design and build quality

The EZ Tube lives up to its name with a slim, cylindrical body that sits comfortably in the hand and fits easily into a pocket. The Cerulean Blue finish is a cool, mid-toned blue that looks understated rather than flashy, and it gives the kit a more grown-up appearance than the bright, patterned look of many disposables. As with any coloured finish, expect it to pick up light fingerprints and, over months of pocket use, small scuffs around the edges. A basic silicone sleeve or a separate pocket for the device is a cheap way to keep it looking tidy.

The build follows a familiar layout for Innokin hardware. The tank sits on top of the battery section, the coil plugs into the base of the tank, and a mouthpiece closes the top. The sealing rings are important, because a refillable tank only stays leak-free if they are seated properly. When you first unbox the kit, take a moment to check that the tank is firmly threaded on, the coil is pressed fully home, and the mouthpiece sits flush. Most leaks reported with new kits trace back to a coil or tank that was not fully seated, not to a fault in the hardware.

• Size and weight: light and slim enough to carry all day without noticing.
• Tank visibility: a viewing window lets you check the liquid level at a glance, so you are less likely to run the coil dry.
• Controls: the stripped-back approach means there are no menus to learn, which suits first-time vapers and anyone who wants a simple, dependable routine.
• Charging port: positioned on the body for USB charging, with a cable supplied in the pack.
• Mouthpiece: a comfortable, narrow tip suited to a mouth-to-lung draw.

In terms of build quality, Innokin has a reputation among UK vapers for solid, well-finished hardware at a sensible price, and the EZ Tube follows that pattern. It is not a premium machined-metal device and does not pretend to be. It is a practical, lightweight kit designed to be used daily, and the threads, seals and body should feel secure when properly assembled. If anything feels loose, rattles or leaks straight out of the box, contact us with your order number rather than trying to force it.

Battery and charging

Slim pen-style kits like the EZ Tube use a compact internal cell rather than a removable 18650 or 21700 battery. For this shape of device the capacity usually falls somewhere between a few hundred and about 1,000 mAh. That is enough to run a low-power MTL coil for a full day of moderate vaping, because the coil draws far less power than a sub-ohm setup. Check the exact figure on the product specification, as it can differ between batches.

As a rough guide, a modest MTL user who takes 100 to 200 puffs a day should find that one charge lasts through a day and often a little beyond. Heavier users who chain vape through an evening may want to top up midday. The kit is easy to charge opportunistically: a short plug-in at a desk or in the car adds a useful amount of use without needing a full cycle.

• Charging time: around one to two hours from empty, depending on the cell size and the power of the charger.
• Charger choice: use the supplied USB cable with a standard 5V phone-style charger or a computer port. Avoid cheap, unbranded multi-port chargers with no safety certification.
• Never leave it unattended: do not charge it overnight on a bed, sofa or other soft surface.
• Avoid heat: keep the device out of direct sun, a hot car dashboard, or any enclosed space that gets very warm.
• Carry it safely: do not store it loose in a pocket with coins or keys, which can short a damaged battery.

Lithium-ion cells wear gradually. After a year or more of daily use you may notice the battery draining a little faster than it used to. That is normal ageing. If the casing swells, the device gets unusually hot, or you smell something chemical, stop using it immediately and keep it away from flammable materials.

Recycling at end of life: never put a vape or a loose battery in your household bin or kerbside recycling. Rechargeable batteries are a known fire risk in bin lorries and sorting plants. Most vape shops that sell devices will take back old ones for recycling, and many council household waste recycling centres have a dedicated small electricals or battery drop-off point. It is worth checking your local council's website for the nearest location. Because the EZ Tube is a reusable kit, it already produces far less waste than a stream of single-use vapes, and single-use vapes are no longer legal to sell in Great Britain.

Coil and tank technology

The heart of the EZ Tube is its Zenith-series plug-in coil. Rather than a fixed heating element that you have to dismantle and rebuild, the coil is a sealed, replaceable unit that slots into the base of the tank. Each coil combines a heating element with an absorbent wick, and the wick draws e-liquid from the tank through small holes in the coil housing. When you draw on the device, the element heats up, the liquid on the wick vaporises, and the vapour travels through the mouthpiece to you.

The coil resistance, measured in ohms and printed on the coil, tells you a lot about how it will behave. Coils designed for MTL vaping generally sit at higher resistances, around the 0.8 to 1.6 ohm region for low-power devices, and they produce a tighter, cooler draw with less vapour. Lower-resistance coils, below about 0.6 ohm, are more commonly used in sub-ohm kits and give warmer, denser vapour but use more liquid and more battery. Some Zenith-family coils use a mesh construction while others use wire, so check the label on the one you are fitting and match it to the draw you prefer.

• Coil life: expect roughly one to three weeks per coil for normal use. Sweet and dessert liquids shorten this; menthol and fruit tend to be gentler.
• Priming: always let a new coil soak for five to ten minutes after filling so that the wick is fully saturated before you vape.
• Compatibility: only fit coils designed for the Zenith system and the model you own, as dimensions and resistances vary between Innokin product lines.
• Leak resistance: a 2ml tank with sealed rings and a plug-in coil design is generally resistant to leaks if filled correctly and stored upright.

Signs a coil is ready to be replaced include a burnt or bitter taste even after a fresh fill, much weaker flavour, gurgling that does not clear, or a visible dark brown or black colour on the wick. Replace the coil rather than trying to push through, because a worn wick produces a harsh vapour that is unpleasant and wastes e-liquid. Keep a spare coil in your bag, since they are small and inexpensive relative to the cost of the kit.

Nicotine strength guidance

UK rules cap nicotine e-liquid at 20mg/ml, restrict refillable tanks to 2ml, and limit nicotine e-liquid bottles to 10ml. The same 20mg limit applied to disposable vapes, and it applies equally to the bottles you will use with this kit. You cannot legally buy stronger liquid from a UK retailer, so the practical question is which strength within that limit suits you.

Two types of nicotine are in common use. Nicotine salts are smoother at higher strengths and are normally sold at 10mg or 20mg. Freebase nicotine is the older style, sold in strengths such as 3mg, 6mg and 12mg, with a harsher throat hit at higher numbers. On a low-power MTL device like the EZ Tube, both work, but they feel quite different.

• Heavy smokers (around 15 or more cigarettes a day): 20mg nicotine salt, or 12mg freebase if you prefer a more traditional feel.
• Moderate smokers (roughly 8 to 15 a day): 10mg to 20mg nicotine salt, or 6mg to 12mg freebase.
• Light or social smokers: 10mg nicotine salt, or 3mg to 6mg freebase.
• Existing vapers stepping down: 3mg to 6mg freebase, or 5mg to 10mg salt if you are comfortable with it.

These bands are only a starting point. If you feel dizzy, nauseous, get a headache, a racing heartbeat or a very harsh throat hit, the strength is probably too high and you should step down. If you still crave cigarettes, find yourself taking very long and frequent puffs, or feel constantly unsatisfied, the strength may be too low. Adjusting by a notch at a time usually settles things within a week or so.

It is worth being honest about the goal. The aim of using a device like this is generally to replace cigarettes, then reduce nicotine over time if you wish. Nicotine is addictive, and vaping is not risk-free, so it is not for people who do not already smoke or vape. If you are pregnant, have a heart condition or other health concern, speak to a GP or pharmacist first, and the NHS stop smoking service offers free support in every part of the UK.

Who the EZ Tube Zenith is for

The EZ Tube suits a specific kind of vaper, and being clear about that saves money and disappointment. It is a simple, low-power, MTL-focused kit, and it is easiest to recommend to people whose habits match that design.

It is a good fit for:

• Smokers moving off cigarettes who want a draw that feels similar, with a tight pull and a noticeable throat hit.
• Former disposable users who want to keep the convenience of a simple device but cut the waste and the running cost, now that single-use vapes can no longer be sold in Great Britain.
• New vapers who want no fuss, with no settings to learn, one coil to swap and one tank to fill.
• People who want a pocketable backup or a lightweight everyday carry alongside a larger device.
• Anyone who wants control over flavour and strength and is happy to buy their own bottles.

It is probably not the right choice for:

• Cloud chasers and sub-ohm users, who will find the vapour output modest and the 2ml tank limiting.
• Vapers who like adjusting wattage, airflow and coil builds, since this kit deliberately avoids tinkering.
• People who use thick, very high-VG liquids, which do not wick well through MTL coils.
• Anyone who does not want to refill, charge and change coils, in which case a closed pod system might feel easier.
• Non-smokers, non-vapers and anyone under 18. Nicotine is addictive, and this product is not for you.

A useful rule of thumb: if you currently smoke or vape something tight and modest, and your main complaints are cost, waste or inconsistent flavour, this kit speaks to those problems. If you want large clouds or lots of control, a different class of device will serve you better.

How to use the kit: first fill to daily routine

Setting up the EZ Tube takes only a few minutes and does not need any tools. Following the steps in order avoids most of the problems new users run into.

Work through the steps in this order:

• Step 1, unpack and inspect. Check the tank, coil and seals are all present and undamaged. Remove any protective film from the mouthpiece and tank.
• Step 2, charge first. Plug the device into a USB charger and let it fill fully before the first use. A full first charge helps the battery settle.
• Step 3, check the coil. Make sure the Zenith coil is pressed firmly into the base of the tank. A coil that is not seated will leak or give dry hits.
• Step 4, fill the tank. Open the fill point, tilt the tank slightly, and add e-liquid down the inside wall rather than directly onto the central airflow tube. Stop below the maximum line and close the fill point securely.
• Step 5, let the coil soak. Wait five to ten minutes so the cotton wick is fully saturated. This is the most important step for a long coil life.
• Step 6, take gentle first puffs. Use slow, three second draws for the first few puffs so that the wick wets evenly.
• Step 7, daily use. Keep the device upright when you can, refill before the tank is empty, and avoid chain vaping for long stretches.

For regular maintenance, wipe the mouthpiece and the charging contacts with a dry cloth, and rinse the tank with lukewarm water whenever you change coil or flavour, leaving it to dry completely before refilling. When you replace a coil, switch the device off, unscrew or lift out the old coil, press the new one in until it is fully seated, then prime it exactly as you did the first time. Store the kit upright where possible, away from heat, and keep e-liquid bottles tightly closed and out of the reach of children and pets.

Troubleshooting common problems

Most issues with a small refillable kit are simple to fix once you know what to look for. Work through the likely cause before assuming the hardware is faulty.

• Dry or burnt taste: usually a coil that was not primed, a tank that has run low, or a coil nearing the end of its life. Refill, let it soak for ten minutes, and if the taste persists after a couple of tanks, fit a new coil.
• Weak or muted flavour: a tired coil, a change to a very heavy sweet liquid, or a different flavour left in the tank. Rinse the tank, dry it and try a fresh coil.
• Leaking: check the coil is pressed fully home, the tank is threaded on firmly, the fill point is closed and the liquid is below the fill line. Avoid storing the device upside down or carrying it in a hot pocket for long periods.
• Gurgling or spitting: small droplets or noise often mean condensation in the airflow tube. Blow gently through the mouthpiece with the device switched off, or wipe the tube with a tissue.
• No vapour or no response: make sure the battery is charged, the coil is seated and the tank has liquid. If it still does nothing, try charging for a full cycle with a different cable.
• Battery not charging: try another USB cable and charger, wipe the charging contacts clean, and avoid charging in a very hot or cold place.
• Vapour feels too hot or harsh: slow your draw, leave a longer gap between puffs, or switch to a thinner liquid and a lower nicotine strength.
• Whistling airflow: a slight whistle can occur with some mouthpieces and airflow settings. It is cosmetic, though a different angle of draw or a slightly more open airflow often stops it.

If a problem continues after these checks, get in touch with your order number and a short description or photo. Faulty goods are covered by consumer law, and in genuine cases of an out-of-the-box fault we will arrange a repair, replacement or refund as appropriate. Do not open the battery section, apply heat, or try to repair the internal cell yourself, as that creates a safety risk and may invalidate any warranty claim.

Value for money and honest comparisons

The upfront cost of a refillable kit is higher than a single disposable, but the running cost per puff is considerably lower. A 10ml bottle gives roughly five tank fills, which works out at a couple of thousand puffs. Add the occasional replacement coil, which typically costs a few pounds, and most regular vapers find the kit pays for itself within a few weeks compared with buying a disposable every few days. Disposables are also no longer legal to sell new in Great Britain, so a refillable kit is now the mainstream route for people who want a small, simple device.

How does it compare with similar kits? Fairly, with some trade-offs:

• Vaporesso Xros series: a popular, widely stocked pod system that often has a larger battery, around 800 to 1,000 mAh in several models, and adjustable features on some versions. It is a strong alternative if you want longer battery life or more control, though it may be less minimal in its approach.
• Oxva Xlim series: a well-regarded range with comfortable ergonomics and flexible airflow options on some models. It tends to suit people who like to tweak the draw.
• Uwell Caliburn series: a compact, simple pod kit known for easy use and a tight draw, which makes it a close match for the EZ Tube's target audience.
• SMOK Novo series: a long-running pod family with plenty of colours and coil options, usually priced competitively.

Where the EZ Tube stands out is in its simplicity and the plug-in Zenith coil approach from a manufacturer with a long UK track record. Where rivals may edge ahead is in battery size, the number of adjustable features, or the sheer range of third-party coils and accessories available in high-street shops. None of these is a wrong choice; they are different priorities.

Overall, the EZ Tube Zenith Minimal offers a sensible, low-fuss entry into refillable vaping. If you value an uncomplicated MTL device from an established brand, and you are happy to buy liquid and coils separately, it represents reasonable value. If you want maximum battery life or a wide range of settings, compare a couple of the alternatives above before you buy.