Perfect for on the go
Delivery was super fast and the product is genuine. I've had fakes before so this was a relief.
OxvaThe OXVA Unicoil 0.2Ohm (Pack of 5) by Oxva at 0mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.
The OXVA Unicoil 0.2Ohm (Pack of 5) is a set of five replacement coil heads from OXVA, the hardware brand behind the Xlim pod range and the Origin line of tanks and pod mods. A coil is the consumable heart of any refillable vape: it holds the heating element and the cotton wick, it is the part that actually turns your e-liquid into vapour, and it wears out long before the battery, the tank or the device body do. Buying coils as a five-pack is how most regular vapers make sure they never find themselves with a dead coil on a Sunday evening and nothing to swap in.
This particular pack is the 0.2Ω (200 milliohm) version. In practical terms that means a low-resistance, sub-ohm coil designed for direct-to-lung (DTL) or restricted direct-to-lung (RDL) vaping. It is built to be paired with a mid-power device, a relatively open airflow, and a thicker, high-VG e-liquid at a low nicotine strength. If you are used to a tight, cigarette-style draw, this is a different experience, and we will be honest throughout this page about who it suits and who it does not.
Here is what you are getting in the pack:
It is worth being clear about what a coil is and is not. A coil is an accessory. It contains no nicotine, no e-liquid and no battery, and on its own it does nothing. It only works when it is seated in a compatible tank or pod, filled with a suitable e-liquid, and powered by a compatible battery. Because it is sold alongside nicotine products, this item is for adults aged 18 and over only.
The rest of this guide covers specifications, performance, flavour, build quality, power and battery considerations, nicotine strength, who the coil is for, how to fit and prime it, how to troubleshoot problems, and how it compares on value with the alternatives. We have written it for UK vapers, so the legal and practical notes reflect UK rules rather than anything imported from another market.
Coil listings are full of numbers, and not all of them are equally useful. Here are the ones that matter for the OXVA Unicoil 0.2Ω, with an explanation of what each means in day-to-day use.
The relationship between watts, volts, ohms and amps is worth a minute of your time, because it explains why a 0.2Ω coil feels so different from a 1.0Ω one. Using Ohm's law, a 0.2Ω coil fired at 40W sees roughly 2.8V and draws about 14A. At 50W that becomes about 3.2V and about 16A, and at 60W about 3.5V and about 17A. Those are substantial currents for a small battery, which is why the battery section below matters as much as the coil itself.
Compatibility is the single most important check before buying. OXVA has released several generations of hardware, and not every device or tank uses the same coil family. Unicoil heads are designed for specific OXVA hardware, and a coil that does not match the thread, base and airflow design of your tank will not seat or seal properly. Look at the markings on your existing coil, check your device's manual or box, and compare it with the compatibility details on this product page. If you are unsure, send us the model name of your device and we will tell you whether this pack fits before you buy.
On e-liquid capacity: the coil does not set the capacity, the tank or pod does. In the UK, refillable tanks and pods sold to consumers are limited to 2ml, and e-liquid bottles to 10ml for nicotine liquid. That cap sits alongside the 20mg/ml nicotine limit that applies to all UK-sold nicotine e-liquid. A thirsty 0.2Ω coil will empty a 2ml tank quickly, so expect to refill more often than you would with a high-resistance MTL coil.
The defining feature of a 0.2Ω coil is how much e-liquid it can vaporise in a single draw. A larger heating surface at a low resistance heats quickly and produces a large cloud with each inhale. If your previous coil was a 0.6Ω or 0.8Ω head, the step up to 0.2Ω is obvious on the very first pull: warmer vapour, denser vapour, and a lot more of it.
Here is how that tends to show up in daily use:
Wicking is the limiting factor. The cotton can only deliver liquid to the heating surface at a certain rate, so if you chain-vape or take very long draws, the wick can fall behind and you will taste a dry, slightly scorched note. The fix is simple: take shorter draws of two to four seconds, give a few seconds between pulls, and keep the tank above the half-way mark. Chain-vaping a sub-ohm coil is the quickest way to shorten its life.
The airflow setting on your tank has a large effect on how the coil behaves. A wide-open airflow cools the coil, gives the most vapour and keeps the draw airy. A partly closed airflow concentrates flavour and warms the vapour but can make the coil run hotter and wear faster. If you are used to a tighter draw, close the airflow a little at first and open it gradually until the draw feels comfortable.
It is also worth being realistic. A 0.2Ω coil is not subtle and it is not frugal. You will use more liquid, more battery and more coils than you would on a higher-resistance setup. In exchange you get a bigger, warmer, more satisfying lung hit. That is the trade-off, and it is the reason this coil is popular with vapers who switched from a mouth-to-lung setup and found it too restrictive.
A coil does not have a flavour of its own. The taste you get comes from the e-liquid, and the coil's job is to heat that liquid evenly and cleanly without adding anything of its own. What the coil does influence is how the flavour is presented: temperature, intensity and consistency. On that basis, the OXVA Unicoil 0.2Ω leans towards a warm, full, rounded presentation.
Here is what to expect from different liquid types:
Almost every new coil goes through a short settling-in period. For the first few draws you may notice a slightly dull or papery taste from the fresh cotton. This disappears once the wick has been properly saturated and the coil has had a handful of draws. Priming correctly (see the how-to section below) shortens this period considerably.
Flavour will change gradually as the coil ages. In the first days, the taste is at its sharpest. After a week or two of regular use, residue from the sweeteners in your liquid builds up on the heating surface, and flavour begins to flatten. When the taste is muted even after a clean tank and a fresh fill of liquid, the coil has reached the end of its working life. Swapping it out brings the flavour back immediately.
One practical tip: if you switch between very different flavours, such as a strong menthol and a creamy dessert, the cotton can hold on to traces of the previous liquid. Many vapers dedicate one coil to each flavour family for that reason, and a five-pack makes that approach affordable.
Pre-built coil heads are small, precision-made parts, and the quality you notice is mostly in the consistency between one coil and the next. A coil pack is only useful if the fifth coil performs like the first. With a five-pack from an established brand like OXVA, the aim is exactly that: identical resistance, identical wicking, identical seal.
Like other pre-built heads in this category, the Unicoil is a self-contained unit made up of these parts:
What to check when your pack arrives: look at each coil in good light before fitting it. The housing should be clean and undented, the silicone seal should be seated and not twisted, and the cotton visible through the top of the coil should be white or off-white and undisturbed. Gently rotate each coil between your fingers; it should feel solid, with no rattling. If any coil looks damaged, set it aside and contact us, and we will sort a replacement.
Storage matters more than most people realise. Keep spare coils in their original tray in a cool, dry place away from direct sunlight and heat. Do not let them roll loose in a bag with keys and coins, where the contacts can be scratched or the cotton compressed. A coil that has been knocked about or squashed may wick unevenly or leak when fitted.
The coils are small, so they are easy to drop and lose. Fit them over a clean surface, and avoid touching the cotton with your fingers, since skin oils can taint the wick and affect flavour. Handle the coil by the metal housing only.
As a design, the fit between the Unicoil head and the tank base is where quality shows over time. A properly seated coil produces a solid, quiet draw with no gurgling and no leaking. If you find a coil does not seat firmly, stop, remove it, and check that the seal ring has not rolled out of place, rather than forcing it.
The coil itself has no battery and does not charge, but it has a larger effect on your battery life than any other part of the setup. A 0.2Ω coil demands a lot of current, so it matters that the device powering it is up to the job.
Start with the numbers. At 50W, a 0.2Ω coil needs about 3.2V and about 16A at the coil, and because the cell in your device sits at around 3.7V nominal, the cell is supplying well in excess of 10A at that setting. Not every battery can do this safely. If your device takes removable cells, use only cells rated for a continuous discharge current comfortably above what you will draw. For a coil like this at typical settings, a high-drain cell with a continuous rating of 20A or more is the sensible choice. Never use an unmarked or rewrapped cell.
How long will a battery last? A rough calculation helps set expectations:
These are estimates, not promises. Real-world figures depend on the device, temperature, how long you hold each draw and how worn the battery is. But they show why a heavy DTL user often carries a spare cell or a power bank.
Charging advice for devices that charge through USB-C:
When a battery reaches the end of its life, do not put it in household rubbish or general recycling. Take it to a battery recycling point, which you will find at most supermarkets and council recycling centres. Retailers who sell vaping products also have obligations to take back waste electrical and battery items, so ask if in doubt.
The inside of a coil is simple in principle and fiddly in practice. An electrical current runs through a resistive metal element. The element heats up. Cotton wrapped around or against the element soaks up e-liquid and presents it to the hot metal, where it turns to vapour. As you draw, fresh liquid wicks in from the tank through the openings in the housing to replace what was used.
Four things determine how a coil behaves:
Pre-built coils such as the Unicoil take the guesswork out of all of this. Building your own requires wire, cotton, tools, and an understanding of safe build resistance. A pre-built head is manufactured in controlled conditions to a consistent specification, which is why many vapers prefer the convenience.
Run the coil in power (wattage) mode unless your device manual says otherwise. Temperature control modes depend on the specific wire material in the coil, and a pre-built head will not necessarily match what the mode expects. Always stay within the wattage range printed on the pack.
Why do coils die? There are three main causes. First, residue builds up on the heating element from sweeteners and flavouring in the liquid, which dulls flavour and eventually causes a burnt taste. This is gradual and is the most common reason for replacing a coil. Second, the cotton can dry out or scorch if the tank runs low or you chain-vape. Third, the element can fail electrically, which usually shows as an error message such as a short circuit or no atomiser found. Spacing your draws, keeping the tank topped up and not over-powering the coil all slow the first two causes.
One last point: a dry burn, where you fire the coil with no liquid, is not a cleaning method and it will damage a pre-built head. Do not do it.
Nicotine strength is where many people go wrong when stepping up to a sub-ohm coil. A 0.2Ω coil produces a lot of vapour per draw, which means a lot of nicotine per draw if your liquid is strong. The general principle is simple: the more vapour a setup produces, the lower the nicotine strength should be.
The following are general guidelines for adult vapers who already use nicotine. They are not medical advice.
The UK rules are straightforward. Nicotine e-liquid sold for refillable devices is capped at 20mg/ml, in bottles of no more than 10ml, with refillable tanks capped at 2ml. That 20mg cap used to be associated with single-use disposable vapes, but disposables are no longer legal to sell in Great Britain, so a refillable system with replaceable coils is now the standard route. It is also a more sustainable one, because you replace a small coil rather than throwing away a whole device.
On the e-liquid base, aim for a high-VG blend, around 70VG / 30PG, or a balanced 60/40 if you find the wick struggles with thicker juice. Very thin liquids can seep and cause leaking, while very thick liquids can starve the wick if you chain-vape. If the wick is regularly dry, you are either drawing too fast or the liquid is too thick for the openings, and switching to a slightly thinner blend usually solves it.
Finally, remember that nicotine is addictive. If you do not currently use nicotine, vaping is not recommended. If you are using vaping to stop smoking, a low nicotine strength combined with this coil is workable, but talk to your local stop smoking service or pharmacist for support tailored to you.
Not every coil suits every vaper, and a good buying decision starts with an honest look at your habits. Here is a plain summary.
This coil is a good fit if you:
You should probably look elsewhere if you:
It also helps to think about how you use your device across a typical day. A commuter who vapes a handful of times between stations might find a 0.2Ω coil overkill, using up a coil and a battery for puffs that a smaller, more efficient setup would serve perfectly. Someone who vapes steadily through a working day, on the other hand, will appreciate the volume and warmth, and will be glad of a five-pack.
If you are moving from disposables to a refillable device, a 0.2Ω coil is a big jump in power. Many people find a mid-range resistance, somewhere between 0.4Ω and 0.8Ω, easier to start with, and then step down to 0.2Ω if they want more vapour. There is no rule that says you must start at the low end, and starting higher is usually cheaper on liquid and battery.
For experienced vapers who know they enjoy a warm, dense DTL experience, the 0.2Ω is straightforward and predictable, and the five-pack format keeps the cost per coil reasonable.
Fitting a pre-built coil takes a couple of minutes, and doing it carefully is the best thing you can do for flavour and lifespan. Follow these steps, and check your tank's manual for any model-specific details.
Day-to-day use tips:
Cleaning a used coil is not worthwhile. Rinsing one can leave water in the cotton and damage the element. Replace it when flavour drops.
Finally, dispose of used coils responsibly. Wrap the spent coil in tissue and follow your local council's guidance for small items. Coils are not household recyclables in most areas, and they should not be put in with batteries. Used vaping hardware and batteries can be taken to household waste recycling centres or retailer take-back points.
Most coil problems have a simple cause and a simple fix. Work through this list before deciding a coil is faulty.
When to stop and replace: if the coil gives a burnt taste that persists after priming and refilling, if it leaks repeatedly after correct seating, or if the device will not recognise it, swap it out. Do not push on with a coil that tastes burnt, as inhaling overheated cotton is unpleasant and unwise.
When to contact us: if a coil is clearly faulty on arrival, such as a damaged housing, a missing seal or a resistance reading far from the stated value, let us know with your order number. Coils are consumable, so normal wear is not a fault, but a defect that exists from day one is something we are happy to put right. Also see the Consumer Rights Act points in the value section below.
Coils are the main running cost of a refillable vape, so it is worth thinking about cost per week rather than cost per pack. How long a 0.2Ω coil lasts depends mostly on how you use it. As a general guide, a heavy user on sweet liquids at higher wattage might get one to two weeks. A lighter user on less sweet liquids at moderate wattage can sometimes stretch a coil to three weeks or a little more. If you take the middle of that range, a five-pack covers roughly two months of regular use.
Factors that shorten coil life:
Factors that lengthen it: moderate wattage, shorter draws, a topped-up tank and proper priming. A little care noticeably extends the time between coil changes.
On value, the main argument for a pack of five is simple: the per-coil price in a multi-pack is generally lower than buying single coils, and you hold a stock of spares. Compare the price per coil rather than the price per pack when you shop around, and be wary of unusually cheap packs from unknown sources, since counterfeit coils are a real problem in the vape market and can have inaccurate resistance and poor build quality. Buying from a UK retailer helps you avoid them.
How does it compare with alternatives? Honestly and fairly:
On returns and warranty: coils are consumable, so normal wear and tear is not covered, but under the Consumer Rights Act 2015 goods must be as described and of satisfactory quality. A coil that is faulty on arrival, or the wrong item, can be returned or replaced. Check the delivery and returns page for the current process.
If you are unsure whether the 0.2Ω is right for your setup, a good compromise is to buy this pack alongside a pack of a higher-resistance coil from the same range and compare. For anyone running Unicoil-compatible OXVA hardware in DTL mode, this is a straightforward, sensibly priced way to keep going.
| Brand | Oxva |
|---|---|
| Product type | Vape Accessory |
| Nicotine strength | 0mg |
| Price | £6.74 |
| Availability | In stock — same-day dispatch |
| Compliance | UK TPD-compliant, MHRA-registered |
Oxva builds some of the most well-regarded refillable pod kits in the UK — the Xlim and Nexlim families are known for being pocket-friendly, leak-resistant and easy on liquids. If you want a refillable kit that just works day after day, Oxva is on most expert shortlists.
Most people use between 0mg and 6mg freebase nicotine in a high-VG liquid, because a 0.2Ω coil produces a lot of vapour per draw. Stronger liquids and nicotine salts usually feel harsh at this resistance. The legal maximum for UK-sold nicotine e-liquid is 20mg/ml.
The coil does not charge, since it only heats your e-liquid, but your device battery does. Charge it with the supplied USB-C cable or a reputable replacement and never leave it charging unattended or overnight. A 0.2Ω coil draws a lot of current, so expect to charge more often than with a higher-resistance coil.
You can, but the cotton holds on to traces of the previous liquid, so strong flavours can ghost into the next one. Many vapers dedicate a coil to each flavour family, and a five-pack makes that easy. Rinsing a used coil is not recommended.
Roughly one to three weeks depending on how heavily you vape, what wattage you use and how sweet your e-liquid is. A pack of five typically covers around two months of regular use. Sweet liquids, high power and chain-vaping all shorten coil life.
A multi-pack usually works out cheaper per coil than buying singles, and it means you always have a spare. Compare the price per coil rather than per pack, and buy from a UK retailer to avoid counterfeit coils with inaccurate resistance.
Anyone who prefers a tight mouth-to-lung draw, uses high-strength nicotine salts, or does not own compatible OXVA hardware should look at other options. It is also not suitable for non-smokers or anyone under 18. Check your device before ordering.
Unicoil heads are made for specific OXVA hardware, and not every OXVA device uses them. Check the markings on your current coil and the compatibility details on this page. If you are unsure, send us your device model and we will confirm before you buy.
Yes, we are a UK shop and deliver to UK addresses. Delivery options, costs and timescales are shown at checkout and on our delivery page. As an age-restricted product, this item is for adults aged 18 and over.
Coils are consumable, so normal wear is not a fault, but a coil that is faulty on arrival or the wrong item can be returned or replaced under your Consumer Rights Act 2015 rights. Contact us with your order number and a photo and we will put it right.
Take batteries to a battery recycling point, found at most supermarkets and council recycling centres, and never put them in household rubbish. Used coils are small and not accepted in all kerbside recycling, so wrap them and follow your local council guidance or ask a retailer about take-back.
Royal Mail Tracked 24 (Next-Day): £1.99, FREE on orders over £20.
DPD Next Working Day: £3.99 (£2.99 over £20), FREE over £100.
Same-day dispatch on orders placed before 4pm Mon-Fri. See our delivery page for full details.
Delivery was super fast and the product is genuine. I've had fakes before so this was a relief.
Pleasantly surprised. Was expecting it to be average but it's actually really nice. Recommended.
Really nice flavour — not too sweet, not too harsh. Perfect in the middle. Second order already placed.
Easy to use, straight out the pack and working. No fiddling about with anything. Great for beginners too.
Solid purchase. Has become part of my routine now. Will continue ordering from here.
Battery lasts me a full day easily. Charging is quick. Overall very pleased with the purchase.
Oxva
Oxva
Oxva
A
Aspire
Aspire
Aspire
Aspire





























The products on this site contain nicotine and are only for adults aged 18 or over. Please confirm your age to enter.
By entering you agree to our Terms & Privacy Policy.