Uwell Caliburn G2 Coil Guide: Mesh vs Standard and When to Replace
Uwell Caliburn G2 Coil Guide: 0.8Ω vs 1.2Ω and When to Replace
The Caliburn G2 comes with two coil options — a 0.8Ω Meshed-H for a slightly more open, vapour-forward draw, and a 1.2Ω Meshed-H for a tight, cigarette-style MTL pull. Both use the same Meshed-H coil technology and press-fit installation. Choosing the right one and knowing when to swap it makes a bigger difference to your daily vape than most G2 users realise.
The Caliburn G2 Coil Range
The Uwell Caliburn G2 Replacement Coils are sold individually at R65 per coil in two resistance options: the 0.8Ω Meshed-H and the 1.2Ω Meshed-H. Both are part of Uwell's Caliburn G2 Coil Series, both use the same press-fit installation system, and both are engineered with the Meshed-H coil format — a mesh heating element that delivers more even heat distribution, better flavour saturation, and longer coil life compared to older round-wire coil designs.
The choice between them isn't arbitrary. The two coils are built for genuinely different vaping styles, and using the wrong one for your preferred draw will give you a mediocre result regardless of the liquid or device settings you use.
The 0.8Ω Meshed-H coil suits vapers who want slightly more vapour and a warmer draw — best for restricted direct-to-lung (RDL) use at 12–15W. The 1.2Ω Meshed-H coil is the classic Caliburn MTL choice — tight draw, efficient nicotine delivery, and the most cigarette-like experience at 10–13W. Both use press-fit installation and last 1–3 weeks depending on liquid type and vaping frequency. Replace when you taste burn, get dry hits, or notice flavour has faded significantly.
At a Glance
0.8Ω vs 1.2Ω — The Full Comparison
Both coils use the Meshed-H format, which means both deliver better flavour and more consistent performance than the standard round-wire coils found in older pod systems. The difference between them is about resistance, wattage output, and the draw experience each produces.
Which Coil Should You Choose?
The single most useful question to ask is: does your current vaping feel too airy or too tight? If you're pulling on the G2 and the draw feels too open — like you're sucking through a straw with a hole in it — switch to the 1.2Ω. If the draw feels too restricted, almost like it's blocked, and you want more vapour and warmth, the 0.8Ω is the right call.
For most ex-smokers coming directly from cigarettes, the 1.2Ω is the better starting point. It most closely replicates the tight, focused drag of a cigarette, uses less liquid per puff, and allows higher nicotine concentrations to be used comfortably. The 0.8Ω suits vapers who have been vaping for a while and want slightly more from the G2 without upgrading to a higher-wattage device.
What Is Meshed-H Coil Technology?
Both G2 coils use Uwell's Meshed-H coil format — a design that applies a mesh heating element instead of a traditional round wire. Understanding why this matters helps explain why G2 coils tend to outlast older pod system coils and produce better flavour from the same liquids.
How to Install a Caliburn G2 Coil — Press-Fit Guide
The Caliburn G2 uses a press-fit coil installation system — no threading, no screwing, no tools. The coil presses directly into the base of the pod with firm downward pressure until it clicks and seats securely. It's one of the simplest pod coil systems available, but there are a few steps that make a significant difference to how long the coil lasts and how good the first puff tastes.
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1Remove the empty pod from the device and empty any remaining liquid. Tap the pod upside down gently over a tissue to clear residual liquid from around the coil port before removing the old coil.
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2Pull the old coil straight out from the base of the pod. The press-fit system means no unscrewing — firm upward pull is all that's needed. Dispose of the old coil responsibly.
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3Prime the new coil before installation. Apply 3–4 drops of your e-liquid directly onto the exposed cotton wicking ports visible on the side of the new coil. This saturates the wick before the first puff and prevents a dry, burnt first hit.
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4Press the new coil firmly into the base of the pod until you feel and hear a click — the coil is now seated and locked. If it feels loose or wobbles, press again with firmer pressure to ensure full seating.
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5Fill the pod with your e-liquid via the side fill port. Do not overfill — leave a small air gap at the top to prevent leaking when the pod is reinserted into the device.
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6Wait at least 5 minutes before taking your first puff. This allows the liquid to fully saturate the new wick throughout the cotton. Taking a draw too soon — even after priming — is the single most common cause of a burnt first hit on a new coil.
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7Take 2–3 gentle primer puffs without activating the device (draw-only, no fire button) to pull liquid through the wick. Reinser the pod, wait another minute, and then vape normally.
A dry coil on first use burns the cotton instantly — and a burnt coil cannot be recovered. The burnt taste is permanent and the coil must be replaced. 5 minutes of patience after filling is the single most effective thing you can do to extend coil life and ensure the best first-puff experience.
When to Replace Your Caliburn G2 Coil
Coil lifespan varies significantly based on liquid type, vaping frequency, and nicotine strength. As a general guideline, Caliburn G2 Meshed-H coils last between 1 and 3 weeks for most regular vapers — consistent with the customer feedback that these coils "last long." Here are the signs that tell you it's time to replace regardless of the calendar:
- A burnt, charred, or acrid taste that doesn't clear after a few puffs — this is a burnt wick and cannot be fixed
- Persistent dry hits even with a full pod — the wick is no longer saturating properly
- Significantly reduced flavour intensity — the coil has accumulated residue that muffles the liquid's profile
- Reduced vapour production at the same settings — coil resistance has drifted or cotton is degraded
- Gurgling or flooding sounds from the pod — this can indicate coil degradation affecting the liquid seal
- Visible darkening or discolouration in the liquid inside the pod — carbon from the coil is contaminating the liquid
What Affects Coil Lifespan?
The type of e-liquid you use has the biggest impact on how long a G2 coil lasts. Sweet, heavily flavoured liquids — particularly those with high sweetener (sucralose) content — accelerate coil gunking dramatically. The sweetener caramelises on the coil and builds up as dark residue that progressively muffles flavour and eventually causes dry hits and burnt taste. If you regularly vape sweet, dessert, or candy profiles and your coils are dying after just a few days, the liquid is likely the cause rather than the coil itself.
Simpler, less sweet profiles — straight fruit, menthol, or tobacco — are significantly gentler on coils and will extend your Meshed-H lifespan noticeably. Keeping the pod reasonably topped up (don't vape down to empty) also reduces dry hits and extends cotton life.
Best E-Liquids for the Caliburn G2 Coils
| Liquid Type | VG/PG Ratio | Coil Lifespan Impact | Best Coil Pairing |
|---|---|---|---|
| Nicotine Salt (MTL) | 50/50 | Excellent — clean, wicks fast | 1.2Ω (tight MTL) |
| Freebase MTL liquid | 50/50 or 60/40 | Excellent — no sweetener build-up | 0.8Ω or 1.2Ω |
| Fruit/menthol profiles | 50/50 or 60/40 | Good — moderate sweetener load | Either coil |
| Dessert/sweet profiles | 50/50 or 60/40 | Reduced — sweetener builds on coil faster | Either — replace sooner |
| High VG (70VG+) | 70/30+ | Poor — too thick to wick in G2 coils | Not recommended |
Avoid 70VG+ liquids in the Caliburn G2. High-VG shortfills and sub-ohm liquids are too thick to wick efficiently through the G2's tight coil design — the result is persistent dry hits regardless of how long you prime. The G2 coils are designed for 50/50 or 60/40 VG/PG MTL liquids, nicotine salts, and longfill concentrates mixed to those ratios.
Caliburn G2 vs G3 vs G4 — Coil Compatibility
A common question from Caliburn users is whether coils from one generation work in another. The short answer is: no — each Caliburn generation uses its own coil system. The G2 coils are specific to the Caliburn G2 and are not cross-compatible with the G3 or G4 pod systems, which use their own respective GPP coil series.
| Device | Coil Series | Options | G2 Coil Compatible? |
|---|---|---|---|
| Caliburn G2 this guide | G2 Meshed-H | 0.8Ω / 1.2Ω | ✓ Native |
| Caliburn G3 | GPP Coil | 0.6Ω / 1.0Ω | ✗ Not compatible |
| Caliburn G4 | GPP Coil | 0.6Ω / 1.0Ω | ✗ Not compatible |
| Caliburn G (original) | G Series | 0.8Ω / 1.0Ω | ✗ Different system |
Who Is Each Coil For?
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✓1.2Ω — Ex-smokers making the switchThe 1.2Ω delivers the tightest draw available on the G2 — a close replication of a cigarette drag that most smokers find most satisfying on their first device. Run it with nicotine salts at 20–35mg for the most cigarette-equivalent nicotine delivery.
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✓1.2Ω — Vapers who vape discreetly and want minimal vapourLess vapour production per puff means less visible exhale — the 1.2Ω is the coil of choice for vapers who want to vape without drawing attention in public spaces, offices, or social settings.
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✓0.8Ω — Vapers who have been vaping for a whileThe slightly more open draw and higher vapour output of the 0.8Ω suits vapers who have already adjusted to vaping and want more from the G2 without stepping up to a higher-wattage device. The warmer draw and fuller vapour are noticeable compared to the 1.2Ω.
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✓0.8Ω — Vapers who mix their own liquids at 12mg freebaseFreebase nicotine at 12mg in a 50/50 liquid works particularly well in the 0.8Ω at 12–15W — the slightly warmer, fuller draw at this resistance delivers freebase nicotine more effectively than the tighter 1.2Ω draw.
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✗Either coil — Sub-ohm or high-VG liquid usersThe Caliburn G2 is an MTL device. Neither G2 coil is designed for sub-ohm liquids (70VG+) or high-wattage vaping. If you primarily use sub-ohm shortfills, you need a higher-wattage device — not a G2 coil swap.
What Caliburn G2 Users Are Saying
Longevity is the consistent theme in G2 coil feedback — and the Meshed-H format is the primary reason. Broader surface area, more even heat distribution, and better wick saturation add up to a coil that outlasts most comparable pod coils at this price point. At R65 per coil with a lifespan of 1–3 weeks, the Caliburn G2 coil cost per week is competitive against most pod systems in its class.
Frequently Asked Questions
The Verdict
The Caliburn G2 Meshed-H coils are among the most reliable pod coils available in South Africa at this price — consistent flavour, genuine longevity, and a simple press-fit installation that takes under a minute to complete. Choose the 1.2Ω for a tight MTL draw that mirrors a cigarette, or the 0.8Ω for a slightly fuller, warmer experience. Prime correctly, use the right liquid ratio, and your coil will last. At R65 each, keeping a spare in your drawer is the most practical insurance against running out mid-day.
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