Uwell Caliburn G3 vs G4 Pods: Compatibility Guide and Best Picks
If you own a Uwell Caliburn G3 and are thinking about upgrading to the G4, or if you are trying to figure out which replacement pods to buy, here is the single most important thing to know: there is no such thing as a "G3 pod" or a "G4 pod" anymore. Uwell has unified its entire Caliburn lineup — G3, G4, and G5 — under one cartridge system called the G Pod Platform. The old G3 pods have been discontinued. The pods you buy today are GPP cartridges, and they fit every current Caliburn device. Here is exactly how the platform works, which resistance to choose, and whether the premium GPP Alpha pods are worth the extra money.
The Short Answer: G3 and G4 Use the Same Pods
Uwell has moved the entire Caliburn G series onto a single pod system: the G Pod Platform (GPP). The original Caliburn G3 pods have been discontinued and replaced by GPP cartridges. These new pods fit the Caliburn G3, G3 Pro, G3 Lite, G4, G4 Mini, G4 Pro, G4 Pro KOKO, G5, G5 Lite, and every other current-generation Caliburn device.
This cross-compatibility is a genuine money-saver for South African vapers. Your existing pod stock is not stranded the moment a new model arrives. If you are currently on a G3 and want to upgrade to the G4 for its larger battery and colour screen, your pod supply transfers across without waste. The only thing you are replacing is the device body — not the cartridges, not the coils, and not your e-liquid preferences.
This unified platform only applies to the G3 generation onward. The much older original Caliburn G and Caliburn G2 pods are a different, earlier design and are not part of the GPP ecosystem. If you are coming from a G or G2, you will need to move to the new GPP pod family when you upgrade.
What Is the G Pod Platform (GPP)?
GPP stands for G Pod Platform — Uwell's standardised cartridge system for all current Caliburn devices. Each GPP pod is a sealed, refillable cartridge with a built-in mesh coil. There are no separate coils to swap; when the flavour fades or the coil burns out, you discard the entire pod and snap in a new one.
The GPP pods use Uwell's PRO-FOCS 4.0 flavour technology and a U-shaped airflow channel to deliver consistent taste and a smooth draw. U² anti-leak technology — built on ultrasonic welding — is designed to reduce leaking by improving the seal between pod components. In practice, this means significantly less condensation and pocket leakage than earlier Caliburn generations.
GPP vs GPP Alpha — Which Should You Buy?
There are two tiers of GPP cartridge. Both fit the same devices. Both come in the same resistances. The difference is coil quality and lifespan.
- Reliable, consistent flavour from first puff to last
- Available in all four resistances and both fill types
- The everyday workhorse — good value, predictable performance
- Widely stocked across South African retailers
- AlphaCore coil technology holds flavour longer before fading
- Rated for 17 or more refills — roughly 50ml of e-liquid
- Soft-touch mouthpiece with integrated top-fill design
- Best for vapers who want maximum pod longevity
The verdict: If you are a casual vaper who replaces pods weekly and does not mind the cost, the standard GPP is perfectly adequate. If you vape heavily, use premium e-liquid, or simply want to reduce how often you buy replacement pods, the GPP Alpha is worth the premium. The extended coil lifespan means fewer trips to the vape shop and less waste over time.
The Four Resistances — Which One Is Right for You?
GPP pods come in four built-in coil resistances, each designed for a different vaping style. Choosing the wrong one for your nicotine strength or draw preference is the most common mistake new Caliburn users make.
| Resistance | Wattage | Draw Style | Best Nicotine | Best If You... |
|---|---|---|---|---|
| 0.4Ω loosest | 20–25W | RDL — airy, warm | Freebase 3mg–6mg | Want clouds and warmth |
| 0.6Ω | 16–20W | Restricted lung | Freebase 6mg / Salt 10mg | Want balance between MTL and DTL |
| 0.9Ω | 12–16W | MTL — medium tight | Salt 10mg–20mg | Want a cigarette-like experience |
| 1.2Ω tightest | 8–12W | Tight MTL | Salt 20mg–50mg | Are a heavy smoker switching to vaping |
0.4Ω — The Cloud Option
The 0.4Ω pod is the loosest, warmest, and most vapour-producing option in the GPP range. It runs best at 20–25W and delivers a restricted direct-lung (RDL) draw that is significantly airier than the other resistances. This is the pod for vapers who have outgrown tight MTL draws and want something closer to a sub-ohm tank experience, but in a compact pod format. It pairs best with low-strength freebase nicotine (3mg–6mg) because the higher vapour volume means more nicotine per puff. Using 20mg+ salt nic in a 0.4Ω pod will feel overwhelming.
0.6Ω — The Versatile Middle Ground
The 0.6Ω pod sits between MTL and RDL. It produces more vapour and warmth than the 0.9Ω, but still retains enough restriction to feel like a pod system rather than a loose lung hit. At 16–20W, it is the most flexible resistance — comfortable with both lower-strength salts and mid-strength freebase. If you are unsure which resistance to buy and want one pod that handles multiple e-liquid types, the 0.6Ω is the safest all-rounder.
0.9Ω — The Default Choice
This is the resistance included with most G3 and G4 kits for good reason. The 0.9Ω delivers a medium-tight MTL draw at 12–16W that replicates the feel of a disposable vape or a cigarette — slightly open, but still restricted enough to satisfy ex-smokers. It works brilliantly with 10mg–20mg nicotine salts and is the go-to recommendation for anyone transitioning from single-use disposables to a refillable Caliburn. The flavour is crisp, the vapour is moderate, and the battery life is reasonable.
1.2Ω — The Cigarette Replica
The tightest draw in the range. At 8–12W, the 1.2Ω pod produces minimal vapour, a strong throat hit, and the most cigarette-like experience of any GPP cartridge. It is specifically designed for heavy smokers making the switch to vaping, and it pairs exclusively with higher-strength nicotine salts (20mg–50mg). If you want your Caliburn to feel as close to a cigarette as possible, this is the resistance. If you find it too tight, step up to the 0.9Ω.
Caliburn G3 vs G4 — Device Differences
Since the pods are identical, the decision between G3 and G4 comes down to the device itself. Here is how they compare:
| Feature | Caliburn G3 | Caliburn G4 |
|---|---|---|
| Battery | 900mAh | 1300mAh |
| Max Output | 25W | 35W |
| Screen | Small monochrome | 0.85" colour OLED |
| Modes | Standard output | Storm / Waves modes |
| Airflow | Slider only | Slider + pod orientation |
| Pod Compatibility | GPP / GPP Alpha | GPP / GPP Alpha |
| Price (SA) | ~R350 – R400 | ~R475 |
The G4 is a meaningful upgrade. The 1300mAh battery is 44% larger than the G3's 900mAh cell, which translates to noticeably longer time between charges — particularly important for South African vapers dealing with load shedding. The 35W maximum output properly drives the 0.4Ω pod, whereas the G3's 25W ceiling can feel slightly underpowered for the loosest resistance. The colour screen, Storm/Waves modes, and dual airflow adjustment (slider plus pod orientation) give the G4 a more premium, customisable feel.
That said, the G3 is not obsolete. It delivers identical flavour and pod compatibility at a lower price. If you are budget-conscious and do not need the larger battery or colour screen, the G3 remains a solid daily driver. The pods you buy for it today will still fit if you upgrade to a G4 next year.
Which Caliburn Devices Use GPP Pods?
The GPP ecosystem covers a wide range of devices. If your device is on this list, GPP pods are the correct cartridges:
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✓Caliburn G3 seriesG3, G3 Lite, G3 Lite KOKO, G3 Pro, G3 Pro KOKO, GK3, GK3 Tenet, G3 ECO
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✓Caliburn G4 seriesG4, G4 Mini, G4 Pro, G4 Pro KOKO, G4 Classic
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✓Caliburn G5 seriesG5, G5 KOKO, G5 Lite, G5 Lite SE, G5 Lite KOKO
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✗Original Caliburn G / G2 / A2 / AK2 / XThese older devices use proprietary pods that are not compatible with the GPP platform. If you own one of these, upgrading to a G3, G4, or G5 requires switching to the GPP ecosystem.
What Vapers and Reviewers Are Saying
The Caliburn G4 and GPP pods have been extensively reviewed since launch. The feedback is consistently strong:
Frequently Asked Questions
The Verdict
The question "G3 vs G4 pods" is ultimately a trick question — they are the same pods. Uwell's G Pod Platform unifies every current Caliburn device under one cartridge system, which means your pod investment is protected regardless of which generation you own or upgrade to. The real decision is not about compatibility; it is about which resistance matches your vaping style and whether the extended lifespan of the GPP Alpha justifies its premium. For most South African vapers, the 0.9Ω standard GPP pod is the correct starting point — it delivers the familiar MTL experience that disposable converts and ex-smokers want, at a price that undercuts prefilled alternatives. From there, the 0.6Ω offers more warmth, the 1.2Ω offers more restriction, and the 0.4Ω opens the door to RDL vaping. Whatever you choose, the GPP ecosystem means you are never locked in — and that is exactly how pod vaping should work.
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