The Uwell Caliburn G4 Australia launch is the headline refillable pod release for 2026. Stronger battery, refined coils, and a larger pod – but is it actually worth upgrading from the G3? After three weeks of daily testing across the mint, menthol and tobacco e-liquids available through Australian pharmacies, here’s the full breakdown of performance, value, and how it stacks up against rivals.
- Battery: 1100 mAh – ~10% more runtime than the G3.
- Pod capacity: 2.5 mL (refillable).
- Coils: 0.6Ω mesh and 0.9Ω – lifespan 7-10 days.
- Australian price: AUD $50-$65 (device only).
- Standout: Adjustable airflow, refined ergonomics, leak-resistant pod.
- Best for: Daily MTL vapers seeking long battery life and lower running cost.
Table of Contents
- What’s New in the Uwell Caliburn G4
- Full Specs and What They Mean
- Battery Life in Real-World Use
- Flavour Performance with Australian E-Liquid
- Coil Lifespan and Replacement Cost
- Australian Price and Where to Buy
- Caliburn G4 vs G3, INTO V2 and XROS 4
- Pros and Cons
- Frequently Asked Questions
What’s New in the Uwell Caliburn G4
The Caliburn G4 is an evolution rather than a revolution. Uwell’s engineers focused on three pain points from the G3:
- Battery capacity bumped from 900 mAh to 1100 mAh.
- Pod capacity increased to 2.5 mL (G3 was 2 mL) – fewer top-ups.
- Re-engineered juice channel reduces leaking after pocket bumps.
The chassis is slightly larger but still pocket-friendly at ~110 mm tall and 24 mm wide.
Full Specs and What They Mean
| Spec | Caliburn G4 |
|---|---|
| Battery | 1100 mAh integrated |
| Wattage range | Auto, ~15W peak |
| Pod capacity | 2.5 mL refillable |
| Coil options | 0.6Ω mesh, 0.9Ω mesh |
| Airflow | Adjustable (3 stages) |
| Charging | USB-C, ~45 min full charge |
| Weight | ~42 g |
| Activation | Draw-activated + side button |
Battery Life in Real-World Use
Across 14 test days with mixed mint and tobacco salts at 20 mg/mL, the Uwell Caliburn G4 Australia unit returned:
- Light user (~50 puffs/day): ~2 days per charge.
- Moderate user (~150 puffs/day): full day with reserve.
- Heavy user (~300 puffs/day): single day, recharge before bed.
The pass-through USB-C means you can vape while it charges – useful when you forget to plug in overnight.
Flavour Performance with Australian E-Liquid
Pharmacy e-liquid restrictions (mint, menthol, tobacco) made the flavour comparison straightforward.
- Mint: Crisp, slightly sweet edge, lingers cleanly. 9/10.
- Menthol: Sharper cooling than mint, throat-front. 8/10.
- Tobacco: Authentic dark-leaf profile with no chemical aftertaste. 8/10.
The 0.9Ω coil emphasises top notes (better for mint), while the 0.6Ω mesh delivers deeper body (preferable for tobacco).
Coil Lifespan and Replacement Cost
Tested coils lasted 7-10 days under moderate use – typical for the Caliburn platform. Replacement coils retail at AUD $3.50-$4.50 each through Australian pharmacy channels. Annualised, that’s roughly $190-$235 in coils plus ~$200-$300 in e-liquid – still less than half the cost of equivalent disposables.
Australian Price and Where to Buy
The Caliburn G4 is sold through licensed Australian pharmacies and online dispensaries that hold valid TGA notification for the bundle. Expect AUD $50-$65 for the device, with starter bundles (device + 2 pods + coils) running $70-$85.
To compare with the rest of the Caliburn family, see our best refillable vape Australia ranking.
Caliburn G4 vs G3, INTO V2 and XROS 4
- vs Caliburn G3: 10% more battery, larger pod, better leak resistance.
- vs INTO V2: Caliburn wins on coil cost (replaceable vs whole-pod), INTO V2 wins on simplicity.
- vs Vaporesso XROS 4: XROS edges flavour fidelity; Caliburn edges battery life and aftermarket coil availability.
Pros and Cons
Pros:
- Longest battery life in its size class.
- Wide replacement-coil availability across Australian pharmacies.
- Adjustable airflow tunes the draw to your preference.
- Low long-term cost of ownership.
Cons:
- Slightly larger than predecessor – not a tight pocket fit.
- Pharmacy flavour restrictions limit experimentation without a prescription.
- Plain pharmaceutical packaging (compliance, not aesthetics).
Frequently Asked Questions
Is the Uwell Caliburn G4 Australia legal to buy?
Yes – it is sold by licensed Australian pharmacies under the post-2024 therapeutic-goods framework. Adults 18+ can purchase without a prescription when paired with ≤20 mg/mL e-liquid.
How long does the Uwell Caliburn G4 battery last?
The 1100 mAh battery delivers a full day for most moderate vapers and up to two days for light users. Charging takes about 45 minutes via USB-C.
Are Caliburn G3 coils compatible with the G4?
Yes – Uwell maintains backwards coil compatibility across the G-series, which keeps replacement-part costs predictable.
What e-liquid flavours work best in the Caliburn G4?
Mint and menthol flavours shine with the 0.9Ω coil, while tobacco profiles are richer through the 0.6Ω mesh.
What’s the difference between the Caliburn G4 and disposable vapes?
The Caliburn G4 is refillable – you replace inexpensive coils and refill the pod, dramatically reducing cost per mL versus disposables.
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Product information based on hands-on review and publicly available manufacturer specifications. Confirm individual product compliance via the TGA Vaping Hub before purchase.