Uwell

Uwell at VapeShopOnline: The Caliburn Ecosystem, Properly Stocked

Ask a room full of experienced UK vapers to name the best refillable pod system of the last decade and the word you will hear most is Caliburn. Uwell built its reputation on that one name, and our Uwell collection is dedicated to keeping the whole Caliburn ecosystem in stock: 55 products spanning complete pod kits, replacement pods across every resistance rating, and replacement coils, priced from £8.99 to £23.99. This is a different kind of brand page from most on our site, because Uwell is a different kind of purchase: not a grab-and-go device but a small system you refill, maintain and keep.

The centre of gravity is the Uwell Caliburn G3 Pod Vape Kit at £16.99, sold here in a spread of finishes including Blue, Cobalt Blue, Gray and Green. Around it sits the consumables shelf that makes a refillable kit work long-term: Uwell Caliburn G3, G4 and G5 GPP Replacement Pods at £9.99 in four resistance options from 0.4 ohms up to 1.2 ohms, and Caliburn G Replacement Coils at £9.95 for the older G-series hardware. Everything is 100% genuine Uwell stock, which matters more with refillable hardware than anywhere else, since counterfeit pods and coils are the most common cause of a good kit performing badly.

Why choose this route over the prefilled formats that dominate the rest of the store? Cost and control. A refillable Caliburn paired with bottled e-liquid from our e-liquids range, which holds 736 options starting at £2.49 a bottle, runs dramatically cheaper per month than any prefilled system, and it opens the entire flavour universe rather than one brand's menu. The trade is a little light maintenance: filling a pod every day or two and swapping a coil or pod every week or three. This page explains the whole system: what makes Uwell hardware special, how the G3 kit performs, what those ohm numbers actually mean, which e-liquids to feed it, and whether the refillable route is right for you at all. Free UK delivery over £20 and same-day dispatch before 4pm apply here as everywhere in the store.

Who Are Uwell? Engineering First, Everything Else Second

Uwell is a Shenzhen-based hardware manufacturer with a reputation built almost entirely on engineering rather than marketing. While much of the vape industry competes on flavour ranges and box art, Uwell competes on airflow design, coil consistency and build quality, and it has done so long enough that its flagship line has become shorthand for the entire refillable pod category. The original Caliburn arrived years ago as a simple, tight-drawing pod kit that did one thing superbly: recreate the draw of a cigarette with bottled e-liquid. It has been iterated relentlessly since, through generations that refined the airflow, battery life, pod design and charging, leading to the current G-series hardware we stock.

Three engineering habits define the brand. First, the draw. Uwell tunes its devices for mouth-to-lung vaping, the gentle, cigarette-like inhale that suits nicotine salts and high-strength e-liquids, and its airflow feel is widely considered the benchmark. Second, the Pro-FOCS flavour system, Uwell's name for the coil and airflow architecture that recirculates airflow over the coil; in practice it means Caliburn pods extract more taste from a given e-liquid than most competing hardware, which is why e-liquid reviewers so often test juices on Caliburn pods. Third, restraint. Uwell hardware rarely chases gimmicks; screens, modes and RGB lighting are left to others, and the devices are better for it.

The result is a brand with an unusual customer profile: heavy skew toward experienced vapers, ex-smokers who settled on mouth-to-lung vaping years ago, and pragmatists who want one dependable kit rather than a drawer of experiments. It also makes Uwell the natural graduation path for adults who started on prefilled pod systems and are ready to cut their running costs. If you are comparing the wider hardware market, our Vaporesso, OXVA and Aspire collections cover Uwell's main rivals, and we draw the direct comparisons later on this page.

The Caliburn G3 Kit Up Close

The Uwell Caliburn G3 Pod Vape Kit at £16.99 is the heart of our Uwell shelf and one of the most complete refillable pod kits you can buy at the price. It is a compact bar-style device with a rechargeable battery, top-fill pods, adjustable airflow and the draw quality the Caliburn name promises. We stock it in multiple finishes, including the Uwell Caliburn G3 Pod Vape Kit in Blue, the Cobalt Blue edition, the understated Gray and a Green option for anyone who wants their kit less anonymous.

What day-to-day life with a G3 looks like:

• Filling. Pop the pod's fill cap, drip in e-liquid from a 10ml bottle, close, wait a couple of minutes on a fresh pod so the coil saturates, vape. A pod holds the UK legal 2ml and a typical user fills once or twice a day.
• Charging. USB-C, fast enough that a coffee-break top-up covers an evening. Like all pod kits, it prefers frequent partial charges to deep cycles.
• Draw. Out of the box the G3 gives a classic tight mouth-to-lung pull, adjustable looser if you prefer a bit more air. Paired with 10mg or 20mg nicotine salt it delivers the cigarette-like experience the Caliburn line is famous for.
• Maintenance. The pod is the consumable. When flavour dulls or the draw picks up a burnt edge, usually after one to three weeks depending on usage and e-liquid sweetness, you swap the whole pod for a fresh one at a few pounds.

Who is it for? Three groups above all: adults switching from smoking who want the closest legal thing to a cigarette draw with proper running costs, prefilled-pod users graduating to refillable economics, and anyone whose current kit died and who just wants the reliable answer. Complete beginners are welcome too; the learning curve is genuinely one afternoon. If you want to survey the whole refillable field before deciding, our pod kits collection holds 455 kits from £2.99 to £34.99, and the G3 sits confidently in the middle of that price band while outperforming most of it.

Understanding Ohms: The Four GPP Pod Resistances Explained

The most technical-looking decision on this page is actually the most useful one to understand. The Uwell Caliburn G3, G4 and G5 GPP Replacement Pods come in four resistance ratings, 0.4, 0.6, 0.9 and 1.2 ohms, all at £9.99 a pack, and all cross-compatible across the G3, G4 and G5 kits. Resistance determines how much power flows through the coil, which shapes everything about how a puff feels. Here is the plain-English version of each option.

1.2 ohms: the cigarette-like end. Highest resistance means least power, coolest vapour, tightest draw and the slowest e-liquid consumption of the four. This is the pod for high-strength nicotine salts, 20mg especially, and for switchers who want the closest match to a cigarette. Battery and e-liquid both last longest here.

0.9 ohms: the all-rounder. Slightly warmer and airier than the 1.2 with a touch more vapour, still firmly mouth-to-lung. If you are unsure where to start with salts at either strength, start here; it is the range's default for good reason.

0.6 ohms: the flavour-forward middle. More power, warmer vapour, noticeably fuller flavour and a looser draw that edges toward restricted direct-to-lung. It suits 10mg salts or lower-strength freebase liquids and users who prioritise taste intensity over maximum battery economy.

0.4 ohms: the warm and airy end. The lowest resistance of the four delivers the warmest, densest vapour and the airiest draw. Best with lower nicotine strengths, since the increased vapour multiplies delivery per puff, and happiest with e-liquids built for a bit of power. It drinks e-liquid and battery fastest; that is the price of the richness.

Practical buying advice. Pods are consumables, so your first consumables order is a chance to experiment: one pack in your best-guess resistance and one adjacent to it costs under £20 and settles the question empirically. Most 20mg users land on 0.9 or 1.2; most 10mg users land on 0.6 or 0.9. Once you know your number, a spare pack in the drawer via our refillable pods collection means you are never stranded on a dying pod.

Feeding Your Caliburn: E-Liquid Pairing Done Right

A refillable kit is only half the purchase; the e-liquid you feed it decides the experience. The Caliburn platform is unusually forgiving, but pairing deliberately gets you far better results, so here is the working guide.

Nicotine salts are the natural partner. The G3's mouth-to-lung draw and the GPP pods' higher-resistance options were made for nicotine salt e-liquid, which delivers smoothly at UK legal strengths. Our nicotine salt collection runs to 582 options from £2.49 a bottle, split across the two legal strengths. Heavier switchers should pair 20mg salts with the 1.2 or 0.9 ohm pods; moderate users do well with 10mg salts on the 0.9 or 0.6. Every bottle follows TPD rules: 10ml maximum for nicotine-containing liquid, 20mg maximum strength.

Freebase liquids work too. Traditional freebase e-liquid in lower strengths suits the 0.6 and 0.4 ohm pods, where the extra warmth and vapour compensate for the slower absorption. The throat hit is sharper per milligram than salts, which some ex-smokers actively prefer.

Shortfills for the flavour hunters. Our shortfill collection, 154 strong from £3.95, covers larger-format bottles of zero-nicotine liquid that you dose with a nicotine shot. On a Caliburn these shine through the 0.4 and 0.6 pods, and they open flavour territory prefilled systems never reach.

Flavour rotation is where refillable wins. This deserves emphasis, because it is the lifestyle difference. A prefilled user changes flavour when a device or pod dies; a Caliburn user changes flavour whenever a pod runs dry, which is daily. Keep three bottles open, a fruit, a menthol from the menthol collection, and a wildcard, and the flavour fatigue that plagues big prefilled devices simply never arrives. One habit to keep: when switching flavours on the same pod, expect a puff or two of the old flavour first, and dedicate a pod to menthol if you run it often, since cooling agents linger in the wick.

Bottles are also the cheapest way to pad an order over the £20 free delivery line, and our 5 for £10 e-liquid deal exists for exactly that kind of stocking up.

The Running Cost Argument: Refillable Maths vs Prefilled

The strongest case for the Uwell shelf is arithmetic, so let us lay it out honestly, including the parts that favour the other side.

The setup cost. A Caliburn G3 kit is £16.99. Add a £9.99 pack of GPP pods and a few bottles of e-liquid and your first month costs around £35 to £40. That is more than any single prefilled purchase, and it is the number that stops people. It should not, because of what happens from month two.

The steady state. From month two your costs are pods and liquid only. A typical moderate vaper uses roughly a bottle of nic salt every few days and swaps pods every week or two. With bottles from £2.49, and cheaper still on the 5 for £10 deal, plus a pods pack lasting the month, a realistic steady-state spend sits around £15 to £20 a month. A heavy user spends more on liquid but the shape holds.

The comparison. A prefilled pod habit at one £5.99 pod a week runs about £26 a month. A big-puff device habit at two £10.99 devices a month runs £22. The refillable route undercuts both while offering hundreds of flavours instead of a brand menu, and the gap widens for heavier users, since bottled liquid scales far more cheaply than prefilled hardware. Over a year, a Caliburn user typically spends £60 to £120 less than a prefilled user with the same consumption, more than repaying the setup cost several times over.

The honest other side. Prefilled formats win on absolute convenience: no filling, no coil awareness, nothing to learn, and no risk of a badly primed pod. They win on pocketability grab-and-go, and multibuy deals across our deals page narrow the gap somewhat. Some people try refilling and simply do not enjoy the ritual; that preference is legitimate and worth £5 to £10 a month to honour. Our advice is only this: make the choice with the numbers in front of you, because most people who see the maths and try a Caliburn for a fortnight do not go back.

Coils, Pods and the Consumables Shelf: Keeping a Caliburn Alive

Refillable hardware lives and dies by its consumables supply, and this is an area where Uwell's ecosystem approach genuinely pays off. Our consumables shelf for the brand covers two generations of hardware, and knowing which part fits what saves both money and frustration.

For current G-series kits: GPP pods. The Uwell Caliburn G3, G4 and G5 GPP Replacement Pods at £9.99 fit all three current-generation kits interchangeably, in the four resistances covered earlier. Cross-generation compatibility is rarer than it should be in this industry, and it means upgrading your kit later does not orphan your pod stock. When a pod's flavour goes dull or burnt-edged, swap it; with typical use that is every one to three weeks, and sweeter e-liquids shorten the interval because sucralose caramelises on coils.

For older G-series hardware: replacement coils. The Caliburn G Replacement Coils by Uwell at £9.95 serve the earlier generation of kits where the coil swaps inside a reusable pod shell. If you are running older Caliburn G hardware that still works well, there is no need to retire it; coils remain available right here, and the swap takes a minute. Our wider coils collection covers other brands' equivalents if your household runs mixed hardware.

Getting maximum life from every pod and coil:

• Prime new pods properly. Fill, then wait two or three minutes before the first puff so the cotton saturates. The single most common cause of an instantly burnt pod is skipping this step.
• Never vape a dry pod. Refill when the liquid drops near the coil inlet, not when it is bone dry. Dry hits scorch cotton permanently.
• Match power to resistance. Using the airiest draw settings with the highest-resistance pods, or chain-vaping the 0.4 ohm option, pushes coils harder than they like.
• Keep a spare. The correct number of pods in your drawer is your current pod plus at least one. Consumables run out on Sunday nights, always.

Everything on this shelf clears our free delivery threshold in pairs: two pod packs is £19.98 within pennies of it, and a bottle of e-liquid tips it over while stocking your rotation.

Uwell vs Vaporesso, OXVA, Aspire and Innokin

Uwell does not compete with the disposable-era brands that fill most of this store; its rivals are the other serious hardware houses, and the differences between them are real enough to matter. Here is the honest tour, using our live collection numbers.

Uwell vs Vaporesso

The Vaporesso collection is the biggest hardware range we stock, 252 products from £5.95 to £34.99. Vaporesso is the feature brand: screens, adjustable wattage, rapid pod innovation across its XROS line and beyond. Uwell is the purist brand: fewer models, fewer features, benchmark draw and flavour. XROS versus Caliburn is the closest fight in refillable vaping; broadly, tinkerers lean Vaporesso, draw-quality obsessives lean Uwell, and neither walks away disappointed.

Uwell vs OXVA

OXVA, 159 products from £2.89 to £24.99, is the fast-rising challenger whose Xlim series has taken a real bite of the Caliburn's audience. OXVA pushes performance density, strong flavour and adjustable output in small kits, and iterates aggressively. Uwell counters with consistency, restraint and the more refined mouth-to-lung draw. This is the comparison for genuine enthusiasts, and it is close.

Uwell vs Aspire and Innokin

The Aspire shelf at 16 products from £4.95 and the Innokin shelf from £5.95 represent the old guard, two of the longest-standing names in vape hardware with deserved reputations for dependable, unflashy kit, much of it beginner-focused. Against them Uwell reads as the modern refinement of the same philosophy: similar values, newer engineering, stronger current flagship. Smaller ranges here reflect focus, not decline.

The pattern across all four: nobody buys wrong among these brands, but they reward different temperaments. Feature-seekers to Vaporesso, performance-chasers to OXVA, traditionalists to Aspire and Innokin, and draw-and-flavour perfectionists to the Uwell shelf you are already on. For completeness, GeekVape and VooPoo serve the more power-hungry end of the market, a different sport from the Caliburn's game entirely.

From Prefilled to Refillable: Making the Switch Without Regrets

A large share of Uwell buyers are graduating from prefilled pods or big-puff devices, and the transition has a few honest bumps worth mapping in advance. Done knowingly, it takes a week to feel native; done blind, small surprises get misread as failures.

Expect a different draw before you judge. The Caliburn's mouth-to-lung pull is tighter and more deliberate than most big-puff devices, closer to a cigarette than to a milkshake straw. Ex-smokers usually love it immediately; vapers raised entirely on loose-draw devices should open the airflow at first and tighten it as taste develops. Give the adjustment three days before forming a verdict.

Match your strength, not your assumptions. Whatever strength satisfied you in prefilled form, start there in bottled salts. The efficient Caliburn draw sometimes lets people step from 20mg to 10mg comfortably within a month or two, and bottled liquid makes that experiment nearly free, but changing hardware and strength on the same day muddies both variables.

Build the small ritual. Filling a pod takes thirty seconds and becomes automatic within a week: morning top-up with the kettle on, done. The users who bounce back to prefilled are almost always the ones who let the pod run dry mid-day with no bottle in reach. The fix is logistics, not willpower: one bottle at home, one in the bag or desk drawer.

Keep a bridge if it helps. There is no rule against a transition period. Plenty of switchers keep a familiar prefilled device from our prefilled pods wall as the out-of-house backup for the first few weeks while the Caliburn earns trust at home. Within a month, most find the roles have quietly reversed.

Start simple on liquids. Choose your first two bottles in profiles you already know you like from prefilled vaping, then explore outward. The 736-strong e-liquid wall is a joy once you have bearings and overwhelming before; two known-good anchors make every experiment low-stakes. And if a flavour misses, a £2.49 bottle is the cheapest mistake in vaping.

Compliance, Quality and the Case Against Fake Uwell

The regulatory picture for refillable hardware differs usefully from the prefilled world, and understanding it explains both the format's pricing and why authenticity matters so much on this shelf in particular.

How TPD rules shape the hardware. UK regulations cap any nicotine-containing e-liquid bottle at 10ml, cap strength at 20mg per millilitre, and cap pod and tank capacity at 2ml. The Caliburn's 2ml pod is that rule made physical, and the 10ml bottles filling our shelves are the same. Refillable kits themselves contain no nicotine at point of sale, but they are regulated products nonetheless, notified for the UK market with their pods and hardware assessed. The single-use disposable ban did not touch this category, because refillable, rechargeable systems are precisely what the rules push toward; if anything, the ban has driven the renaissance in kits like the G3.

Strictly 18 and over, as ever. Every product on this page is age-restricted, we verify age on every order, and our framing does not change for hardware: these are products for adult vapers and adults switching from smoking. No health claims, no exceptions.

Why counterfeits hit refillables hardest. A fake prefilled device fails once; fake refillable consumables fail every week. Counterfeit Caliburn pods are the most common fake in this category, sold loose or in convincing packaging, and they ruin the experience in ways buyers blame on Uwell: harsh draw, muted flavour, leaking seams, coils that burn in days. Worse, an unverified coil and wick is what you are inhaling through daily. Uwell prints scratch-off authentication codes on genuine packaging for exactly this reason. Every kit, pod pack and coil box we ship is 100% genuine, sourced through authorised UK distribution, and at £9.99 a pack for real GPP pods the saving a fake offers is pennies against the cost of hating a good kit.

Batteries deserve respect too. Charge with a standard USB-C lead and sensible-wattage plug, never overnight on a pillow, and retire any device with a swollen or hot-charging battery to a battery recycling point rather than a bin. Lithium cells are safe when treated normally and unforgiving when abused; the rules are the same ones your phone lives by.

The Two-Minute Caliburn Maintenance Routine

Refillable hardware asks a little of you, but far less than newcomers fear. The entire discipline of keeping a Caliburn running perfectly fits into about two minutes a week, and this section is that routine written down, plus the fixes for the three problems that account for nearly every Caliburn complaint we hear.

The weekly two minutes. Pull the pod off the battery and wipe the contacts on both halves with a dry tissue; condensation builds there naturally and is the top cause of weak or intermittent firing. Check the airflow inlets are clear of lint. Glance at the pod through the side window: e-liquid should sit comfortably above the coil inlet. Wipe the mouthpiece. Done. Do this while the kettle boils on a Sunday and your kit will behave all week.

Problem one: gurgling or spitting. This means excess liquid in the airway, usually from overfilling, from drawing too hard, or from the kit lying flat in a warm pocket. Hold a tissue over the mouthpiece and flick the device sharply downward two or three times to eject the flooding, then draw more gently. Persistent gurgling on one pod usually clears when that pod is next replaced.

Problem two: weak or no vapour. Check the battery level first, since output softens as charge falls. Then clean the contacts as above. Then confirm the pod is seated fully; a pod nudged loose in a bag will sit a millimetre proud and fire inconsistently. In years of selling this platform, those three checks resolve nearly every dead-kit report without a warranty claim.

Problem three: flavour fading early. If pods that used to last a fortnight now dull in days, look at your e-liquid before your hardware. Very sweet liquids coat coils in caramelised sweetener; rotating in a less sugary profile restores normal pod life. Chain-vaping does the same damage thermally, so if your sessions have crept up, the fix is pacing, not new pods.

What you never need to do. No coil rebuilding, no cotton, no screwdrivers, no settings menus. The Caliburn's whole design philosophy is that maintenance means wiping and swapping, nothing more. Anyone who can keep a phone charged can keep this kit healthy, and the payoff for those two minutes is a device that tastes like new for as long as you feed it genuine pods.

Building Your Uwell Order: Three Setups That Work

To close, here are three complete, real-world Uwell orders we would stand behind, each built from the shelf on this page with live prices. Copy the one that matches your situation and adjust the flavours.

The switcher's first kit, around £37. One Caliburn G3 kit at £16.99 in whichever finish you will enjoy carrying, one pack of 1.2 ohm GPP pods at £9.99, and three bottles of 20mg nicotine salt from £2.49 each, ideally two familiar profiles and one experiment. This setup gives an adult switching from smoking the tightest, most cigarette-like draw the platform offers, a month of consumables, and change from £40. It clears free delivery twice over and arrives next-day if ordered before 4pm.

The graduate's upgrade, around £30. For the prefilled-pod user moving to refillable: the G3 kit at £16.99, a pack of 0.9 ohm pods at £9.99 as the versatile starting resistance, and a couple of bottles of salts matching your current strength. Keep your old prefilled device as the first-week backup, and expect the running-cost difference to be visible on your bank statement within two months.

The incumbent's restock, around £25. For existing Caliburn owners: two packs of GPP pods in your proven resistance, £19.98, plus e-liquid to preference, with the 5 for £10 e-liquid deal turning the top-up into a proper stock-up. If you are still running older Caliburn G hardware, swap one pod pack for the £9.95 G-series coils and carry on; the old kit owes you nothing.

A last word on the shelf itself. We keep all four GPP resistances, both G-series consumable types and the full finish range of the G3 kit in stock as standing lines, because a refillable ecosystem is only as good as its weakest supply link. Uwell has held up its end of that bargain for years, our new arrivals page picks up each fresh generation as it lands in the UK, and the wider starter kits collection is always there if you are helping someone else begin. The Caliburn earned its reputation one reliable day at a time; stocked properly, it keeps earning it.

And if you are buying for someone else: a G3 kit plus a pack of 0.9 ohm pods is the safest gift order on this page, because the recipient chooses their own e-liquid and the versatile middle resistance suits whatever they pick. Add a note of their current nicotine strength if you know it, ask us nothing complicated, and the parcel does the rest. Hardware this proven makes generosity easy: no guessing at flavours, no risk of buying a format they will not use, just the most recommended refillable platform in UK vaping with its consumables sorted for the first month.

Popular picks from Uwell

Some of what sits in this collection right now:

• Caliburn G Replacement Coils by Uwell from £9.95
• 0.4 Ohms Uwell Caliburn G3, G4 & G5 GPP Replacement Pods from £9.99
• 0.6 Ohms Uwell Caliburn G3, G4 & G5 GPP Replacement Pods from £9.99
• 0.9 Ohms Uwell Caliburn G3, G4 & G5 GPP Replacement Pods from £9.99
• 1.2 Ohms Uwell Caliburn G3, G4 & G5 GPP Replacement Pods from £9.99
• Uwell Caliburn G3, G4 & G5 GPP Replacement Pods from £9.99
• Uwell Caliburn G3 Pod Vape Kit from £16.99
• Uwell Caliburn G3 Pro Pod Vape Kit from £19.99

The full collection runs to 13 products, starting at £8.99. The sort and filter controls make a large range manageable.

Related collections worth a look

Brands stocked in this collection:

• Uwell (13 products)

Broader ranges to browse from here: Vape Kits, Vape Deals, Sale, E-Liquids, New In, Nicotine Pouches. Baskets over £20 ship free within the UK.