Description
Uwell Caliburn G – a refillable MTL pod kit with replaceable coils, a 690mAh all-day battery and adjustable airflow, £15.99 in 2026. Best for ex-smokers wanting a tight, cigarette-like draw and cheap running costs. Not for cloud chasers; the drip tip is a tight fit.
Key Facts
The Uwell Caliburn G has a 690mAh built-in battery that recharges over USB-C in 45 to 50 minutes.
The Caliburn G uses a 2ml top-fill pod with replaceable UN2 coils in 0.8 ohm mesh and 1.0 ohm.
Caliburn G coils also fit the Caliburn G2, GK2, Koko Prime, Tenet, Caliburn X, Ironfist L and GZ2.
A Caliburn G coil typically lasts 7 to 10 days of average use.
The Caliburn G fires by button or by inhaling, with a 5-click lock.
This is the model that made the Caliburn range a UK favourite: the coil swaps out, so a burnt coil costs about £2.49, not a whole pod. Versus the Caliburn A2, it costs more upfront but runs cheaper.
Key Specs Customers Check
Battery: 690mAh built-in. A full day of moderate vaping; 45 to 50 minute USB-C charge, passthrough supported.
Output: up to 18W. Auto-matched to the fitted coil.
Pod: 2ml top-fill (UK TPD limit). The clear pod shows the liquid level.
Coils: UN2 0.8 ohm Meshed-H and UN2 1.0 ohm. Ohm is coil resistance; lower means warmer vapour, looser draw.
Airflow: dual position. Line up the pod’s air holes for looser, offset for tighter.
Activation: button or draw. Inhale or press the button; 5 clicks locks it.
Flavour tech: Pro-FOCS. Uwell’s flavour recycling system behind the Caliburn taste.
Colours: Black, Blue, Red, Green, Rosy Brown, Grey. Six aluminium finishes.
Pick Your Inhale: MTL or RDL
MTL (mouth to lung) means drawing vapour into the mouth first, like a cigarette; RDL (restricted direct lung) is a looser pull straight to the lungs. This kit does both:
1.0 ohm coil = true MTL. Tight, cool, cigarette-like draw; the pick for new switchers.
0.8 ohm mesh coil = loose MTL to RDL. Warmer, bigger flavour; runs warm fully open, so tighten it for the best taste.
Coils and E-Liquid Pairing
Both coils are made for 50/50 e-liquid (equal parts PG and VG). On the 1.0 ohm coil, use nic salts: 20mg for heavy smokers, 10mg for lighter, for a smooth throat hit. The 0.8 ohm mesh also takes 3mg to 6mg freebase 50/50. Avoid thick 70% VG shortfills; they wick too slowly and burn these coils.
Battery, Coil Life and Running Cost
The 690mAh cell lasts a full day for light to moderate vapers, 5 to 6 hours heavy. UK reviewers average 7 to 10 days per coil, less with sweet liquids. At £9.95 a 4-pack that is about £2.49 per coil; add 14ml a week of 4 for £10 nic salts and a typical week runs £5 to £6, under half what big-puff prefilled kits cost a heavy vaper.
Compatibility and Refills
The pod takes Caliburn G coils, which also fit the G2, GK2, Koko Prime, Tenet, Caliburn X, Ironfist L and GZ2. Spare Caliburn G replacement pods cost £4.49. This is the G, not the slimmer 750mAh G2, which shares the same coils. A2 pods do not fit.
Best Colours
Black is the most stocked and searched finish across UK stores and suits discreet pocket carry. Blue and Red suit vapers who want their kit recognisably theirs, Green and Rosy Brown anyone after something less common, and Grey the understated pick for long-term smokers in their 40s and 50s.
How to Set Up
Pull the pod out and rock off the tight-fitting drip tip.
Push a coil into the pod base until it seats flush.
Fill with 50/50 e-liquid through the top port, leave a small air gap, refit the tip.
Wait 5 to 10 minutes so the cotton fully soaks; skipping this burns the coil in minutes.
Click the pod in, set airflow by pod direction, and vape.
How to Make It Last Longer
Prime every new coil with the 5 to 10 minute soak; never dry fire.
Top up before the pod drops below a quarter full.
Avoid chain vaping; pauses stop the coil overheating.
Swap the coil at the first burnt note.
Price Comparison
As of August 2026, other UK stores list this kit from around £16 to £22, so at £15.99 Vape Online Store sits at the low end of the market with all six colours in stock. The better measure is running cost: £2.49 replaceable coils beat any fixed-pod kit, paired with 10ml nic salt e-liquids and the wider Uwell Caliburn range.
What UK Vapers Say
UK review sites rate this kit highly for flavour, but buyer reviews are more mixed on leaks: gurgling or bottom leaks trace to overfilling, hard draws, an unseated coil or worn pod seals. Fill with a small air gap, seat the coil fully, take gentle puffs. Early burnt coils come from skipped priming. The tight drip tip divides opinion, but tight beats leaky.
What’s in the Box
1 x Caliburn G device (690mAh)
1 x 2ml top-fill pod
1 x UN2 0.8 ohm Meshed-H coil and 1 x UN2 1.0 ohm coil
1 x USB-C cable
1 x user manual
FAQs
Which coils fit the Uwell Caliburn G?
Uwell UN2 Caliburn G coils, 0.8 ohm mesh or 1.0 ohm. The same coils fit the G2, GK2, Koko Prime, Tenet, Caliburn X, Ironfist L and GZ2.
How long does a Caliburn G coil last?
Typically 7 to 10 days, up to 14 for lighter vapers. Sweet e-liquids shorten that; skipped priming kills a coil in minutes.
Why does my Caliburn G taste burnt?
Almost always an unprimed or dry coil. Soak new coils 5 to 10 minutes after filling, keep the pod above a quarter full, avoid chain vaping.
How long does the Caliburn G battery last?
A full day light to moderate, 5 to 6 hours heavy. USB-C recharge takes 45 to 50 minutes.
Is the Caliburn G MTL or DTL?
MTL first: the 1.0 ohm coil gives a tight cigarette-style draw; the 0.8 ohm mesh with open airflow reaches a restricted direct-lung pull. It is not a cloud device.
What e-liquid should I use in a Caliburn G?
50/50 nic salts: 20mg for heavy smokers, 10mg for lighter. 3mg to 6mg 50/50 freebase works on the 0.8 ohm mesh. Avoid 70% VG shortfills.
What is the difference between the Caliburn G and G2?
The G2 is slimmer with a 750mAh battery; the G is the original. Both use identical coils, so switching costs nothing in spares.
Does the Caliburn G leak?
Mixed: many pods run dry for months, some buyers report bottom leaks after weeks. Fill with a small air gap, seat the coil flush, and replace a pod with worn seals (£4.49).
Why is my Caliburn G light flashing?
The LED is the battery gauge, so flashing usually means charge is low; plug in via USB-C. If it will not fire after a full charge, reseat the pod and coil and try another cable.
Why is my Caliburn G not hitting when I draw?
Check in order: charge, the 5-click lock, pod clicked in, coil flush, airflow holes clear. Draw gently; hard pulls flood the coil.
