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Uwell Caliburn A3S Vape Pod Kit

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  • Brand: Uwell
  • Dimensions: 109.8 mm x 21.3 mm x 11.7 mm
  • Battery Capacity: 520mAh, Integrated
  • Tank Capacity: 2ml Refillable Pods
  • Pod Compatibility: Uwell Caliburn A3, AK3 and A3S
  • Charging Type: 2A Fast-Charging C-Type Capable Battery
  • Coil Resistance:  0.8ohm, 1.0ohm
  • Coil Type:  Mesh
  • Power Output: 16 W
  • MTL Vaping
  • Side Filling Design
  • Inhale Activation
  • Built-In Coils
  • Beginner-Friendly
  • Affordable Price 
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Uwell Caliburn A3S Vape Pod Kit Price

Uwell Caliburn A3S Vape Pod Kit

The Uwell Caliburn A3S is a refillable MTL pod kit (MTL means mouth-to-lung, a tight, cigarette-style draw) with a 520mAh battery, 2ml side-fill pods and draw activation, £12.99 on the current sale. Best for ex-smokers and disposable switchers; not ideal for cloud chasers or very heavy vapers.

The Caliburn A3S Pod Kit is the simplest device in the Caliburn family: fill the pod from the side, inhale, and it fires. It is a dedicated MTL vape kit built for nic salts and 50/50 e-liquid. Several national UK retailers have delisted the A3S in 2026, while it stays in stock here in all six colours. Versus the Caliburn A3, the A3S swaps the snap-off top-fill mouthpiece for a cleaner side-fill port at a lower price.

🔥 Real-World Battery Reality Check: UK reviewers report around five hours of steady vaping per charge, or most of a day for a light MTL user. The 2A USB-C charging refills the 520mAh battery in about 25 to 30 minutes, so two short charges cover a heavy day comfortably.

Key Facts

  • The Uwell Caliburn A3S has a 520mAh built-in battery with a maximum output of 16W.
  • The Caliburn A3S uses 2ml side-fill pods with built-in 0.8Ω and 1.0Ω mesh coils.
  • The Caliburn A3S accepts both Caliburn A3S pods and original Caliburn A3 pods.
  • The Caliburn A3S costs £12.99 at Vape Online Store and comes in six colours.

Uwell Caliburn A3S Vape Pod Kit Key Specs

Key Specs Customers Check

🔋 520mAh Built-In Battery Around five hours of steady vaping, a full day for lighter MTL users. The 2A USB-C charging refills it in about 25 to 30 minutes — one of the fastest charge times in its class.
⚡ 16W Maximum, Fixed Power matches the pod automatically; nothing to set. The Pro-FOCS chipset handles the wattage, so you get consistent output from first puff to last without fiddling with settings.
💧 2ml Pod Capacity (UK TPD) Roughly a day of e-liquid for a typical MTL vaper. Side-fill with a silicone plug — the pod stays on the device while topping up.
🔥 0.8Ω and 1.0Ω Mesh Coils One pod of each comes in the box. The 0.8Ω gives a warmer, fuller vape; the 1.0Ω runs cooler and tighter — the closest feel to smoking.
💨 Draw-Activated Only Inhaling fires the coil; no buttons at all. Perfect for ex-disposable users who want the same zero-fuss experience.
📱 Logo-Shaped LED Indicator Green, blue, then red as the charge falls. Clear and readable, and it disappears into the aluminium body rather than looking tacked on.
📏 Slim Aluminium Body 109.8mm × 21.3mm × 11.7mm, about 33g. A slim aluminium body that disappears in a pocket — genuinely pocketable.
🔄 Cross-Pod Compatibility Takes A3S pods as well as A3 pods, doubling the refill options. Both use the same Pro-FOCS coil technology.
🇬🇧 Fully TPD Compliant 2ml capacity and fully UK TPD compliant. Genuine Uwell stock sourced through authorised UK distribution. Sold for adult use only, 18+.

Uwell Caliburn A3S Specifications

Specification Detail
Battery 520mAh built-in, rechargeable
Output 16W maximum, fixed (Pro-FOCS chipset)
Pod Capacity 2ml (UK TPD)
Coils Built-in 0.8Ω and 1.0Ω mesh (one of each included)
Fill Method Side fill with silicone plug
Activation Draw-activated, no buttons
Charging USB-C 5V/2A, ~25–30 minutes
Battery Indicator Logo-shaped LED (green/blue/red)
Dimensions 109.8 × 21.3 × 11.7mm
Weight ~33g
Material Aluminium alloy
Vaping Style MTL only (mouth-to-lung)
Compatible Pods Caliburn A3S pods, Caliburn A3 pods
Not Compatible With Caliburn G, G2, GK2, A2S, AZ3 Grace pods
Colours 6 finishes
Compliance UK TPD compliant
Price £12.99 (was £15.99)

Pick Your Inhale: One Style, Two Draws

The Caliburn A3S is MTL only, with a genuinely tight draw, closer to a cigarette than almost any pod kit at this price. There is no adjustable airflow and no DTL (direct to lung) mode. The pod you fit decides the draw.

💨 0.8Ω Pod (Included) Warmer, fuller vape with a touch more vapour. Best for vapers who want a bit more punch from their MTL draw. Handles 20mg nic salts smoothly. Runs the battery and liquid slightly faster than the 1.0Ω pod.
💨 1.0Ω Pod (Included) Cooler and tighter — the closest feel to smoking. The gentlest on battery and e-liquid, making it the better choice for all-day use and for vapers stepping down from cigarettes. Best with 10mg or 20mg nic salts.
⚠️ Not a Cloud Device: Cloud chasers should pick a sub-ohm kit instead. The A3S is capped at 16W with a tight MTL draw — it's designed for cigarette-like satisfaction, not vapour production. If you want big clouds, look elsewhere.

Key Features

  • Side-fill pods: the fix for the older A3's biggest complaint. The snap-off top-fill mouthpiece on the A3 was fiddly; the A3S replaces it with a silicone side plug that's faster and cleaner. The pod stays on the device while you top up.
  • Pro-FOCS flavour technology: the coil tuning behind the Caliburn's loyal following. Uwell's Pro-FOCS (Professional Flavour Optimisation Control System) balances airflow and heat for consistent flavour across the pod's life.
  • Cross-pod compatibility: takes A3 pods as well as A3S pods, doubling the refill options. Both use the same coil technology, so the vape experience is essentially identical.
  • Magnetic pod connection: the pod clicks in with magnets and aligns itself — no twisting, no forcing, no misalignment.
  • No buttons, no settings: fully draw-activated. Inhale and it fires. There is no fire button, no wattage adjustment and no menu to learn.

Coils and E-Liquid Pairing

Both pods want thin juice: 50/50 e-liquid or 10ml Nic Salts.

🧂 10mg Nic Salt Suits smokers of fewer than 10 a day. Smooth throat hit, fast nicotine delivery, no harshness. The 1.0Ω pod is the best match for this strength.
🧂 20mg Nic Salt Suits heavier smokers and ex-disposable users. The 0.8Ω pod handles 20mg smoothly without harshness, and the 1.0Ω pod gives the tightest, most cigarette-like draw.
🧂 6mg or 12mg 50/50 Freebase For anyone stepping nicotine down. The 50/50 ratio wicks perfectly in both pods, and the lower strength gives a gentler throat hit for all-day vaping.
⚠️ E-Liquid Warning: Thick 70% VG shortfills wick too slowly at 16W and burn coils early. Stick to 50/50 or nic salts. High-VG shortfills belong in a sub-ohm tank, not a Caliburn A3S.

Battery, Pod Life and Running Cost

UK reviewers get about two full pods and five hours of vaping per charge. Owners on E-Cigarette Forum report Caliburn pods lasting one to two weeks before flavour fades.

💷 Cost Per Week Breakdown: Caliburn A3S replacement pods cost £9.99 for four, about £2.50 each. A typical week runs roughly £6.50 in pods and nic salt combined, versus £10 to £15 for a two-to-three-bar disposable habit. The Caliburn A3S pays for itself in the first month.

Uwell Caliburn A3S Vape Pod Kit Compatibility

Compatibility and Refills

To be clear on the model: this is the Caliburn A3S, not the A2S or AZ3 Grace. It takes A3S side-fill pods and Caliburn A3 pods (top fill), both in 0.8Ω and 1.0Ω mesh.

⚠️ Compatibility Check: Caliburn G, G2 and GK2 pods do not fit. Neither do A2S or AZ3 Grace pods. Always check the pod pack says "Caliburn A3S" or "Caliburn A3" before ordering replacements.

The full range is in the Uwell Caliburn Vapes collection.


Uwell Caliburn A3S Vape Pod Kit Setup Guide

How to Set Up the Caliburn A3S

  1. Charge: Plug in with any USB-C cable until the LED shows green. A full charge takes about 25 to 30 minutes at 2A.
  2. Fill the pod: Pull the pod off, open the side plug and fill with 50/50 e-liquid, tilting the nozzle slightly so air can escape.
  3. Prime: Close the plug and wait 5 minutes so the coil soaks (called priming), preventing a burnt first puff.
  4. Insert the pod: Click the pod back in; the magnets align it.
  5. Vape: Take a slow, gentle draw. The device fires on inhale — no buttons needed.
⚠️ Priming is Everything: The 5-minute wait is non-negotiable. Rushing this step is the #1 cause of burnt hits on a new pod. A scorched Pro-FOCS mesh coil cannot be recovered — it will taste burnt for its entire life.

How to Make It Last Longer

  • Keep the pod above a quarter full. Running low is the fastest way to scorch a mesh coil.
  • Draw slow and gentle. Chain vaping outruns the wick and causes dry hits.
  • Swap the pod when flavour dulls, normally after one to two weeks. Don't wait for it to fail completely.
  • Recharge before the LED sits on red and avoid leaving the battery flat for weeks — deep discharges shorten battery life over time.
  • Store upright to prevent leaking and keep the coil saturated.
💡 Pro Tip — Pod Won't Fill? An air lock is forming inside the pod, the one quirk UK reviewers noted with the side-fill port. Insert the nozzle at a slight angle and fill slowly so air can escape. Never squeeze liquid into the central airflow tube — that floods the coil and causes gurgling.

Which Colour to Pick


Midnight Black

Moonlight Silver

Space Grey

Ocean Flame

Iris Purple

Lake Green

Midnight Black is the most searched Caliburn colour and the safe pick for discreet pocket carry at work. Moonlight Silver and Space Grey suit ex-smokers in their 40s and 50s wanting an understated, classic look. Ocean Flame and Iris Purple are the statement finishes, and Lake Green hides scuffs well. All six official Uwell colours are stocked here.


Uwell Caliburn A3S vs Competitors

Feature Caliburn A3S Caliburn A3 Vaporesso XROS 4
Battery 520mAh 520mAh 1000mAh
Output 16W fixed 16W fixed Up to 16W, 3 modes
Fill Method Side fill (silicone plug) Top fill (snap-off mouthpiece) Top fill
Pod Compatibility A3S + A3 pods A3 + A3S pods XROS pods only
Charging USB-C 2A, 25–30 mins USB-C 2A, 25–30 mins USB-C 2A, ~30 mins
Weight ~33g ~33g 51.5g
Price £12.99 £14.99 £17.99
Best For Budget MTL Vapers MTL Vapers MTL & RDL Flexibility
🏆 Why Caliburn A3S Wins: It offers the same Pro-FOCS flavour and tight MTL draw as the A3 at £2 cheaper, with a cleaner side-fill port that fixes the A3's most common complaint. It's 33g lighter than the XROS 4 and £5 cheaper, and it takes both A3S and A3 pods — so you're never stuck for refills. For a dedicated MTL vaper, the A3S is the simplest, most affordable way into the Caliburn ecosystem.

Caliburn A3S Price Check

As of July 2026, the A3S is hard to find in the UK. Vape UK lists it as discontinued and several other national retailers no longer show it. Here it is £12.99, down from £15.99, in every colour.

The newer Caliburn A3 Pod Kit is £14.99 with identical pod pricing, so the A3S is the cheaper way into the same ecosystem. More options sit in the MTL vape kits for beginners collection.

Wholesale — Buy in Bulk

Single Kit £12.99

1 × device + 2 pods

Uwell Caliburn A3 Replacement Pods £10.99 (Was £11.99)

4 × pack (save £1.00)

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Uwell Caliburn A3S Replacement Pods £9.99 (Was £12.99)

4 × pcs (save £4.00)

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📦 Wholesale Enquiries: For larger bulk orders or trade accounts, contact our wholesale team directly. We offer competitive pricing on all Uwell products.

✅ Authentic Uwell Products
✅ TPD Compliant
✅ Same-Day Dispatch
✅ Free Delivery Over £40
⭐ 4.6★ Rating (Uwell Reviews)

Uwell Caliburn A3S Vape Pod Kit — £12.99

Was £15.99 | Free UK delivery over £40

💰 UK Vape Tax 2026 Note: The Caliburn A3S is a hardware device — it is NOT subject to the Vaping Products Duty. Only e-liquids are taxed at £2.20 per 10ml. Vape Online Store ensures full compliance with HMRC regulations.

Uwell Caliburn A3S Vape Pod Kit Box Contains

What's in the Box

  • Uwell Caliburn A3S device
  • 1 × 0.8Ω mesh pod (pre-installed)
  • 1 × 1.0Ω mesh pod
  • User manual
📌 USB-C charging cable is NOT included — keep a standard one handy. Any USB-C cable works, the same type most modern phones use.

Conclusion

The Uwell Caliburn A3S Vape Pod Kit is one of the simplest and most affordable MTL pod kits on the UK market right now. With a 520mAh battery, 16W fixed output, Pro-FOCS flavour technology, and cross-compatibility with A3 pods, it delivers the tight, cigarette-like draw that Caliburn owners have loved for years — in a cleaner, cheaper package than the A3.

Independent UK reviewers and E-Cigarette Forum owners consistently praise the pod life (one to two weeks), the flavour consistency (Pro-FOCS keeps it steady across the pod's life), and the simplicity (no buttons, no settings). The side-fill port fixes the A3's most common complaint, and the price is £2 lower.

At £12.99 from Vape Online Store — £2 cheaper than the A3 and £5 cheaper than the XROS 4 — it's the best value way into the Caliburn ecosystem. Whether you're switching from disposables, stepping down from cigarettes, or just want a reliable daily MTL vape, the Caliburn A3S won't let you down.

Head over to vape online store today, pick your colour, and experience what a truly great budget MTL pod kit feels like.

🔄 Need replacement pods? Grab the Caliburn A3S Replacement Pods to keep your device running.

Explore the full Uwell Caliburn Vapes range at Vape Online Store for more devices and accessories.

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Frequently Asked Questions

What pods does the Uwell Caliburn A3S take?

The A3S takes Caliburn A3S side-fill pods and original Caliburn A3 top-fill pods, both with built-in 0.8Ω or 1.0Ω mesh coils. Caliburn G, G2 and GK2 pods do not fit, and neither do A2S or AZ3 Grace pods.

How long does the Caliburn A3S battery last?

Around five hours of steady vaping, or most of a day for a light MTL user. The 2A USB-C charging refills the 520mAh battery in about 25 to 30 minutes, so two short charges cover a heavy day.

How long do Caliburn A3S pods last?

One to two weeks each is the typical lifespan owners report on E-Cigarette Forum, depending on e-liquid sweetness and usage. Replace the pod when flavour turns dull rather than waiting for it to fail.

Why does my Caliburn pod taste burnt?

A burnt taste means the coil ran dry — a problem vapers also raise about Caliburns on Quora. Prime every new pod for 5 minutes, keep it above a quarter full and avoid chain vaping. A scorched coil never recovers; fit a fresh pod.

What is the difference between the Caliburn A3S and the A3?

The A3S fills from the side through a silicone plug, while the A3 fills from the top after snapping off the mouthpiece, which many owners found fiddly. Battery, output, capacity and coils are otherwise the same, and pods are cross-compatible.

Why will my Caliburn A3S pod not fill properly?

An air lock is forming inside the pod — the one quirk UK reviewers noted with the side-fill port. Insert the nozzle at a slight angle and fill slowly so air can escape, and never squeeze liquid into the central airflow tube.

Is the Caliburn A3S good for beginners?

Yes. There are no buttons or settings; filling takes seconds, and the device fires on inhale. With 10mg or 20mg nic salts, it feels very close to a disposable at a fraction of the weekly cost.

Does the Caliburn A3S have adjustable airflow?

No. The A3S has a fixed MTL airflow — a tight, cigarette-like draw. The pod you fit (0.8Ω or 1.0Ω) determines how warm and tight the vape feels, but there's no slider to adjust.

Can I use 70/30 shortfill in the Caliburn A3S?

No. The 16W fixed output can't properly vaporise high-VG liquid. Thick 70VG/30PG shortfills wick too slowly and burn coils early. Stick to 50/50 or nic salts.

Is the Uwell Caliburn A3S TPD compliant?

Yes. The Caliburn A3S is fully UK TPD compliant — the pods are 2ml and the device is rechargeable. Sold by an authorised UK retailer. Adult use only, 18+.

Does the kit come with a charging cable?

No. The USB-C charging cable is not included. Any standard USB-C cable works, the same type most modern phones use.

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