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Keep your compatible Uwell device running properly with our range of Uwell vape coils, including replacement coils for the popular Caliburn G and Caliburn G2 systems alongside higher-powered Valyrian 2 coils. With options covering tight MTL draws through to high-wattage DTL vaping, choosing the right Uwell coil starts with matching the exact coil family and resistance to your device.
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A replacement coil is the part of a refillable vape that actually heats your e-liquid.
Inside the coil is a heating element surrounded by absorbent wicking material. E-liquid is drawn into that wick and then vaporised when the device supplies power to the coil.
Over time, the coil and wick gradually deteriorate. Flavour can become weaker, vapour production may fall and eventually the wick can develop a burnt taste.
At that point, replacing the coil is normally all that's required to restore the consumable part of the system.
Our current Uwell coil range covers two very different areas of the manufacturer's hardware:
These coil families aren't interchangeable, so always start with the model of your device or tank before choosing a resistance.
The contrast between these coils is considerable.
A 1.2Ω Caliburn G2 coil is intended for a compact device operating at relatively low power, whereas a 0.15Ω Valyrian 2 coil is designed for a large sub-ohm tank operating at around 100W or more.
The Uwell Caliburn G coil platform was designed for refillable Caliburn pod systems using separate replaceable coils.
Rather than replacing the whole cartridge every time the coil wears out, the pod can be retained and a fresh coil pushed into the base.
Uwell's original Caliburn G hardware uses its UN2 Meshed-H 0.8Ω coil alongside a 1.0Ω option, with the platform designed to support both mouth-to-lung and slightly looser restricted-direct-lung airflow depending on how the pod is positioned.
Our current range includes both the 0.8Ω Meshed-H and 1.0Ω Caliburn G coil types, although the 0.8Ω version is currently listed as discontinued.
The 1.0Ω Caliburn G coil sits firmly within mouth-to-lung territory.
Our current listing specifies a recommended power range of 10–15W, making it a relatively low-powered option for compatible Caliburn hardware.
The higher resistance and modest wattage suit a tighter draw and make the coil particularly relevant to users of 50/50 e-liquid and nicotine salts.
Compatible devices can include:
The 0.8Ω UN2 Meshed-H Caliburn G coil provides a slightly lower resistance than the 1.0Ω option.
Uwell originally supplied this coil with the Caliburn G and continued compatibility across later G-series devices including the Caliburn G2 and GK2.
Its lower resistance lends itself to a somewhat looser draw and slightly greater vapour production than the 1.0Ω and 1.2Ω options, while still remaining within the lower-powered Caliburn ecosystem.
This particular coil is currently shown as discontinued in our range, so remaining availability may be limited.
The Caliburn G2 1.2Ω Meshed-H coil is the highest-resistance Uwell coil currently in this category.
Uwell designed it specifically around lower-powered MTL use. It is one of the standard coil options for the Caliburn G2, which has a maximum output of 18W, and is also supported by devices such as the Caliburn GK2.
The 1.2Ω resistance generally provides:
For customers using compatible Caliburn G-series hardware primarily for MTL vaping, this is the most restricted option among the separate replacement coils we currently stock.
One useful characteristic of the Caliburn G platform is the amount of compatibility between certain devices.
For example, the Caliburn G2 supports:
The Caliburn GK2 supports the same three coil options.
That gives users some flexibility to alter the resistance and draw without replacing the complete device.
Compatibility still needs to be checked carefully, though. Newer Caliburn generations such as the G3, G4 and G5 have increasingly moved towards integrated-coil GPP cartridges rather than these older separate G-series coils.
This is an important distinction if you own a newer Caliburn.
Older Caliburn G and G2 systems use pods that accept separate replacement coils.
Newer GPP-based devices use cartridges with the coil built directly into the pod.
Uwell's current G Pod Platform covers the Caliburn G3, G4 and G5 families and offers integrated cartridges in resistances including 0.4Ω, 0.6Ω, 0.9Ω and 1.2Ω.
If your device uses a GPP pod, the Caliburn G coils on this page won't be the correct replacement.
At the opposite end of the range are Uwell Valyrian 2 coils.
These are large sub-ohm replacement coils designed for the Valyrian 2 tank and compatible high-powered hardware.
Rather than the 10–20W region associated with Caliburn coils, Valyrian 2 coils are designed around substantially higher output.
Our current selection includes:
Uwell also produced other Valyrian 2 variants, including a 0.16Ω triple mesh and 0.32Ω single mesh, but the 0.14Ω and 0.15Ω versions are the options currently represented in our range.
The 0.14Ω Valyrian 2 UN2-2 coil uses a dual mesh heating structure.
Uwell recommends an operating range of 80–90W.
At this sort of power, the coil is firmly aimed at direct-to-lung vaping.
You can generally expect:
It is better suited to high-VG, lower-nicotine e-liquid than the 50/50 liquids typically used with Caliburn MTL coils.
The 0.15Ω Valyrian 2 coil is rated even higher.
Uwell describes this as a quadruple-coil design with a recommended power range of 100–120W.
Despite the resistance only being 0.01Ω different from the 0.14Ω option, its recommended wattage is substantially higher.
That's a useful reminder that resistance alone doesn't tell you exactly how a coil should be used.
Internal construction matters too.
Always follow the power range printed on the specific coil rather than assuming that two similarly rated resistances require the same wattage.
Valyrian 2 coils were originally designed around the Uwell Valyrian 2 tank.
Uwell later retained compatibility with selected Valyrian 2 coils when introducing the Valyrian 3. The Valyrian 3 supports selected Valyrian 2 coils alongside its newer coil options.
That doesn't mean every Valyrian tank uses every Valyrian coil, though.
Check your exact tank model before ordering.
Neither is inherently better.
They're simply intended to do different jobs.
A 1.2Ω Caliburn coil in a compact pod system isn't trying to compete with a 100W Valyrian coil, and vice versa.
The safest approach is simple: start with your device or tank.
Find the full model name.
"Uwell Caliburn" by itself isn't specific enough because Uwell has produced many generations using different coil and pod systems.
Determine whether your device uses:
Once you've confirmed the correct platform, choose the resistance that best matches your preferred draw and the options supported by the device.
If your device allows manual power adjustment, stay inside the operating range specified for the coil.
Coil resistance is measured in ohms (Ω).
As a very general rule, higher-resistance coils tend to operate at lower power, while lower-resistance coils tend to require more wattage.
Resistance gives you a useful indication of the type of coil you're dealing with, but the manufacturer's recommended wattage should always be the more precise guide.
MTL, or mouth-to-lung, describes drawing vapour into the mouth before inhaling.
The Caliburn G-series coils are the main MTL options in our current Uwell replacement-coil range.
The 1.0Ω and 1.2Ω versions in particular are geared towards:
The 0.8Ω coil offers a somewhat looser alternative while remaining far below the power required by Valyrian coils.
DTL, or direct-to-lung, uses a more open draw with the vapour inhaled directly.
The Valyrian 2 coils are designed around this style.
Their 80–120W recommended ranges require a substantially more powerful mod than a Caliburn pod system and consume considerably more e-liquid per draw.
They're generally associated with:
Make sure both your tank and mod are designed to support the coil and its recommended power.
Several Uwell coils use mesh heating elements.
Rather than a conventional narrow wound wire, mesh creates a broader heating surface against the wick.
Uwell uses mesh designs across both its Caliburn and Valyrian ranges, although the size and intended power level differ enormously.
The Caliburn G2 1.2Ω, for example, uses Uwell's UN2 Meshed-H construction at relatively low power, while the Valyrian 2 0.14Ω coil uses a much larger dual-mesh design intended for 80–90W.
Mesh construction can help provide:
Like any coil, it still needs to remain properly saturated.
The answer depends entirely on the coil.
Higher-resistance Caliburn coils generally pair well with thinner liquids such as:
Valyrian coils are designed for high-powered sub-ohm vaping and are more naturally suited to:
Putting thick high-VG liquid into a small low-powered MTL coil can make wicking more difficult.
Equally, using high-strength nicotine salt liquid in a 100W DTL tank would generally be inappropriate.
Match the e-liquid to the coil and device.
Within the current range, the Caliburn G 1.0Ω and Caliburn G2 1.2Ω coils are the natural choices for nicotine salts.
Their higher resistance and lower power suit the style of device normally used with 50/50 nic salt liquids.
The 1.2Ω coil offers the tightest MTL option, while the 1.0Ω provides a slightly more open alternative.
Valyrian 2 coils are designed for high-power DTL use and therefore occupy a completely different part of the market.
The exact method varies between tanks and pods, but separate Uwell coils are generally straightforward to change.
Never force a replacement coil into place.
If it doesn't fit properly, check compatibility before continuing.
A fresh coil contains dry wicking material.
It needs to absorb e-liquid before the heating element is fired.
After fitting a new coil:
Rushing this step can burn a fresh coil almost immediately.
There isn't one fixed lifespan.
Coil longevity depends on factors such as:
Very sweet e-liquids can leave deposits on the heating element more quickly, while high-powered coils naturally process much more liquid than small MTL coils.
The best guide is usually performance rather than counting days.
Common signs include:
Once the wick is genuinely burnt, the coil should be changed rather than simply reducing the wattage.
The most common cause is a wick that has overheated without enough liquid.
Possible reasons include:
If the cotton has already scorched, the burnt taste usually won't disappear.
Replace the coil and address the underlying cause before using the device again.
There's no trick that makes a coil last indefinitely, but correct use can prevent unnecessary early failure.
No.
Uwell has produced many different tanks, pod kits and coil platforms over the years.
A Caliburn G coil won't fit a Valyrian 2 tank, and a modern GPP cartridge is a different consumable format again.
Always match:
The Uwell name alone isn't enough to establish compatibility.
Check the exact name of your device or tank first. Then match it to the coil family specified by Uwell.
Certain devices support both. The Caliburn G2 and GK2 can use 1.2Ω G2, 0.8Ω G and 1.0Ω G coils.
Not generally. The newer G3 and G4 families use Uwell's GPP integrated-coi
