SMOK G-Priv 4 Vape Kit Blue

Overview

The SMOK G-Priv 4 Vape Kit Blue by Smok in Blue at 0mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

SMOK G-Priv 4 Vape Kit overview

The SMOK G-Priv 4 Vape Kit is a high-power box mod kit from SMOK, a brand that has been building sub-ohm hardware for well over a decade. It belongs to the G-Priv family, which SMOK positions as its powerful, dual-battery line for adult vapers who want a device with real headroom rather than a compact pod. The kit combines a dual 18650 box mod with a sub-ohm tank that uses mesh coils, so once you add two suitable batteries and a bottle of e-liquid you have a complete direct-to-lung setup.

This page is a plain-English guide to what the kit does, who it suits and where it falls short. We have written it for UK buyers, which means we cover the UK rules that affect you: the 20mg/ml nicotine cap, the 10ml bottle limit, the 2ml tank limit on UK-market tanks, and how to recycle the device and cells responsibly when the time comes. Where we quote numbers such as maximum wattage, we are describing the G-Priv 4 as it is normally supplied, and we recommend checking the specification panel on this page against the unit you receive, because regional editions of SMOK products can differ slightly.

The headline facts at a glance:

• Format: dual 18650 box mod paired with a sub-ohm mesh-coil tank
• Power: adjustable output up to roughly 230W
• Batteries: two 18650 cells, bought separately
• Intended use: direct-to-lung (DTL) vaping with low-nicotine e-liquid
• Variants on this listing: four finish options, with the same hardware underneath
• Not included: e-liquid, batteries and an external charger

If you are completely new to vaping, read the sections on nicotine strength and troubleshooting before you buy, because this style of device has a learning curve that pod kits do not. If you already run a sub-ohm kit and want a straightforward replacement or a second device, the sections on performance, battery life and value should tell you quickly whether the G-Priv 4 deserves a place in your bag.

What you get in the box and what you still need to buy

Kit contents vary a little between editions, so treat this as the typical G-Priv 4 package rather than a guarantee. In most boxes you will find the following:

• The G-Priv 4 box mod
• The SMOK tank, usually with a mesh coil already fitted
• A USB-C charging cable
• An accessory pack, which in many editions includes a spare coil or spare seals
• A user manual and warning card

What the box does not contain is just as important. Two 18650 batteries are sold separately, because lithium cells are shipped under their own rules and most retailers do not bundle them with kits. You will also need e-liquid, and we strongly suggest an external charger, which we explain further in the battery section.

Buying batteries is the single most important decision you will make with this kit. Choose two cells from a reputable brand with a continuous discharge rating of at least 20A, and buy them as a matched pair, ideally from the same batch. Cells in the Samsung 25R or Sony VTC6 class are common choices among experienced vapers. Avoid unbranded cells with improbable capacity claims, such as 9900mAh on a single 18650, because genuine 18650 cells top out at roughly 3500mAh. Never mix old and new cells, or different brands, in the same device.

Beyond the essentials, a few cheap extras will save you money and hassle. Keep two or three spare coils so you never have to buy a stop-gap disposable-style product when a coil dies. A plastic battery carry case stops loose cells touching keys or coins in a pocket, which is a genuine safety issue. A small pack of tissue and a bottle of warm water for rinsing the tank is all the maintenance kit you really need. If you plan to vape heavily, a second set of cells means one pair is always charged while the other is in use.

It is also worth deciding up front how you will recycle things. Vape devices, spent coils and old batteries must never go in household bins. We cover the UK drop-off options near the end of the page.

Performance and power delivery

The G-Priv 4 is built to run at far higher wattage than the majority of kits sold in the UK. With a ceiling in the region of 230W, the mod offers enormous headroom, but the more relevant question is how it behaves in the 50W to 90W range where most mesh coils are designed to operate. In that range the chipset should ramp the coil quickly after you press the fire button, hold output steadily through a long draw and shut down cleanly if it detects a short circuit or an out-of-range resistance.

A dual 18650 mod gives you two practical benefits over single-battery devices. First, the voltage available is higher, which lets low-resistance coils fire without the mod working at the edge of its limits. Second, with two cells sharing the load, each cell works less hard at a given wattage, which generally helps both run time and cell longevity. The trade-off is physical: a dual-battery mod is wider and heavier than a single-cell device, and you will feel it in a jacket pocket.

As a rule of thumb for a mesh coil, you should start at the lower end of the wattage range printed on the coil and move up in small steps until the flavour and warmth are right. Running the coil at the top of its range gives larger clouds and a warmer vape but consumes e-liquid and battery faster and wears the coil sooner. Pushing beyond a coil's recommended maximum does not improve the vape, it scorches the wick and ruins the flavour. The 230W ceiling is therefore best understood as flexibility for bigger coil builds in future tanks rather than a figure you should chase daily.

On puff delivery, a kit like this does not have a fixed puff count the way a disposable does. Your puffs per fill depend on wattage, how long you draw and the e-liquid itself. As a rough guide, a 2ml fill at 60W to 70W gives somewhere in the region of 150 to 300 puffs for most users, and the tank is quick and easy to top up. That is a different experience from a sealed device with a fixed puff count, but it means you are never throwing away working hardware just because the liquid has run out.

One honest caveat: high power is not automatically a better vape. A small, low-wattage pod will use a fraction of the e-liquid and battery. If you only want something discreet for a few puffs between meetings, the G-Priv 4 is more device than you need.

Flavour and vapour production

The G-Priv 4 itself does not have a built-in flavour, because it takes whatever e-liquid you put into the tank. What it does determine is how well that liquid is rendered. Mesh coils have a large surface area in contact with the wick, which means more of the liquid is heated evenly. In practice that translates into flavour that is fuller and more consistent from the first puff to the last, with fewer of the dry or muted patches you sometimes get from older round-wire coils.

Vapour production is generous at the wattages this kit is designed for. Expect dense clouds and a warm, soft throat feel when you pair a mesh coil with a 70/30 VG/PG e-liquid at a sensible wattage. At the lower end of a coil's range you will get a cooler vape with more restrained cloud, which suits fruitier and menthol flavours. At the upper end the vape turns warmer and rounder, which tends to suit desserts, custards and tobacco profiles.

How different e-liquid styles behave in a sub-ohm mesh tank:

• Fruit and ice: sharp and clean at low to mid wattage. Menthol-heavy blends can feel harsh if you push the power too far.
• Dessert and bakery: richer at higher wattage, but sweeteners can build up on the coil, so expect to change coils more often.
• Tobacco: best in the middle of the range, where the warmth brings out the roasted notes without scorching.
• Nicotine salts: generally better suited to low-power pod devices than a high-power sub-ohm tank (see the nicotine section).

Four options appear on this listing. In the case of the G-Priv 4 these are finish and colour variants of the same kit, so choose purely on looks. Changing flavour is as simple as emptying the tank, rinsing it and filling with your next bottle. Many vapers keep a dedicated tank for menthol blends, because menthol lingers in the seals and can colour the taste of a sweeter liquid afterwards.

As a final practical note, sweet liquids with high sugar or sweetener content gunk up coils faster. If you notice flavour fading after only a few days, the coil rather than the mod is almost always the cause, and a fresh one will restore the original taste.

Design, screen and build quality

The G-Priv 4 uses the familiar SMOK dual-battery box layout: a rectangular body with a front-mounted display, a fire button on the front edge and a small adjustment control. It is wider than a single-cell mod, which gives the screen and buttons room, and the shape sits comfortably in the hand for most adults. The finish options on this listing change the colour and surface treatment but not the internal hardware.

The display shows the information you need day to day: current wattage, battery level, coil resistance and similar readouts. Being able to see the resistance of the fitted coil at a glance is genuinely useful, because it tells you immediately whether a coil is seated properly and whether you have picked up a faulty part. The interface follows the same logic as other SMOK mods, so anyone upgrading from an earlier SMOK device will find the menus familiar.

Build quality is what you would expect at this price tier. The body is metal, the battery door is secured by a catch, and the connection to the tank is a standard 510 thread. Points worth checking when your kit arrives:

• The battery door closes with a firm click and does not rattle
• The fire button feels crisp rather than sticky
• The 510 connector sits level with the top of the mod, with the tank threading on smoothly
• There is no visible gap or misalignment around the screen

Like any high-power mod, the G-Priv 4 is not waterproof. Keep it away from water, and wipe spilled e-liquid from the connector and the top cap with a dry tissue promptly. E-liquid that gets into the 510 pin area can cause intermittent firing or erratic readings. Likewise, the finish on any painted mod will pick up scratches in a pocket or bag, so a silicone sleeve or a hard case is a worthwhile purchase if appearance matters to you.

If you are looking for a ruggedised device that is built to survive drops and splashes, other brands in the market sell dedicated shock-resistant mods. The G-Priv 4 is designed more for power and a good display than for survival in a work-site or camping environment, and it is fair to say so.

Battery life and charging

Because the G-Priv 4 uses two removable 18650 cells, your battery life depends on the cells you buy. Quality 18650 cells commonly offer between 2500mAh and 3500mAh each. In a dual-battery mod the cells are used together, so for planning purposes think of the usable energy as roughly the capacity of one cell at double the voltage. Using round numbers, a pair of 3000mAh cells stores something like 22Wh, which is enough to run a mesh coil at 60W for roughly 20 minutes of actual firing time. In day-to-day use that is typically a full day for a light vaper and a day and a half to two days for someone who vapes a few times an hour.

Those figures are estimates, not guarantees. Real run time depends on cell condition, ambient temperature, how long you hold the fire button and how high you set the wattage. Higher wattage uses disproportionately more battery, and a mod set to 90W will empty a pair of cells much faster than one set to 55W.

You can usually charge the cells inside the mod through the USB-C port. This is convenient, but the experienced advice is to use an external two-bay or four-bay charger from a reputable brand wherever you can. External chargers tend to balance charge more accurately, let you charge one cell at a time, and mean that your mod stays usable while a spare pair charges. If you do charge inside the mod:

• Use a quality USB-C cable and a wall adapter from a recognised brand
• Never leave the device charging unattended overnight or on a soft surface such as a bed or sofa
• Unplug when the screen shows a full charge
• Stop using any cell that gets noticeably hot while charging

Battery safety is the one area where a bit of care matters a lot. Inspect the wraps on your cells regularly and replace any that are torn, because a damaged wrap can expose bare metal. Never carry loose cells in a pocket with keys, coins or a lighter, and use a case. Do not mix cells of different ages, brands or capacities. Charging time with a standard USB-C adapter is usually a few hours, depending on the cells and the current the adapter supplies.

When a cell reaches the end of its life, which is typically after a few hundred charge cycles, do not throw it in the bin. Take it to a battery recycling point, which you can find at most large supermarkets and at council household waste recycling centres.

Coil and tank technology

The tank supplied with the G-Priv 4 is a SMOK sub-ohm design built around mesh coils. If you have not met mesh before, the principle is straightforward. Instead of a round wire wrapped around a cotton core, a mesh coil uses a thin flat sheet of resistance material formed into a cylinder or a series of folds, with cotton or organic wicking pressed against it. The mesh heats up faster, covers more of the wick's surface and spreads the heat more evenly, which is why mesh coils are popular for flavour and why they respond quickly when you press the button.

Coils in this family typically fall between roughly 0.15 ohm and 0.33 ohm. Lower resistance coils pull more power and produce more vapour, while higher resistance coils are more economical and suit lower wattage. The recommended wattage range is printed on the side of each coil, and you should always stay inside it. Do not assume that a coil from another SMOK tank will fit this one, because threads and heights differ between families. Check the tank model on your listing against the coil you plan to buy.

A few practical details about the tank:

• Capacity: UK-market tanks are limited to 2ml by law, so the tank sold in Britain holds 2ml even if larger figures appear in overseas reviews. Where a kit ships with a larger extension glass, it is for use in markets that allow it and should not be fitted for UK use.
• Filling: top-fill designs with a sliding or swivelling cap are common in this family, which means you do not have to take the tank apart to refill it.
• Airflow: an adjustable airflow ring lets you tighten for a cooler, more restricted draw or open fully for an airy, cloud-friendly one.
• Coil changes: the coil screws into the base of the tank and takes a minute to swap once you know how.

Priming is the step most new users get wrong. A new coil must be soaked in e-liquid before you fire it. Add a few drops directly to the cotton through the coil's wicking holes, fill the tank, then wait at least five to ten minutes before your first puff. A dry-fired mesh coil burns its wick on the first draw and tastes terrible for the rest of its short life.

You should expect a coil to last between one and three weeks, depending on your wattage, how often you vape and how sweet your e-liquid is. Replace it when you notice a burnt taste that does not clear after a fresh fill, a gurgling sound or flavour that has gone flat.

Choosing nicotine strength and e-liquid

Nicotine strength is the area where sub-ohm kits catch beginners out. The G-Priv 4 produces a lot of vapour per puff, which means that every puff delivers more nicotine than the same puff from a small pod device using the same strength liquid. The practical result is that you should use a much lower strength than you would in a pod.

UK law limits nicotine e-liquid to a maximum of 20mg/ml, and bottles of nicotine e-liquid to 10ml. This is why the large-volume bottles you see for sub-ohm use are usually sold as 0mg shortfills with space left for nic shots. The cap applies to every nicotine vape, including pod refills, and is a ceiling rather than a recommendation. In a sub-ohm tank, you will almost always want to be far below it.

Suggested starting points for this kit:

• Coming from cigarettes, smoking around 10 or more a day: start at 6mg/ml freebase nicotine and adjust. Some people find 3mg enough, and some who are used to high nicotine will go up to 12mg, but the throat hit becomes harsh at higher wattage.
• Light smokers or occasional vapers: 3mg/ml is generally plenty.
• Experienced vapers who want a low-nic cloud-chaser setup: 0mg to 3mg.
• Nicotine salts: 10mg/ml salts can work at low wattage with a higher-resistance coil, but 20mg salts are a poor match for a high-power sub-ohm tank and will be harsh and inefficient.

For the e-liquid base, a 70/30 VG/PG blend is the common choice for sub-ohm mesh coils, giving thick vapour and a smooth draw. A 50/50 blend gives more throat hit and tends to wick faster, which can help if you are vaping at lower wattage or if your coils seem to dry out. Very thick high-VG liquids, say 80/20 or above, can starve a mesh coil in high demand, so check the label if you notice dry hits.

If your first week is unpleasant, with dizziness, a sore throat or a heavy chest, the most likely culprit is too much nicotine or too much power. Reduce either of them before assuming the device is faulty. Anyone who is not a current smoker or vaper should not start using nicotine at all.

Who the G-Priv 4 is for, and who should skip it

Every vape device suits some people and not others, so it is worth being honest about the audience for this one. The G-Priv 4 is aimed at adults who already smoke or vape and want a more powerful, more satisfying alternative.

It suits you if you:

• Prefer a big, warm, direct-to-lung draw and a lot of vapour
• Already use a sub-ohm kit and want a reliable dual-battery replacement
• Like a device you can tune, with wattage you can adjust to match each e-liquid
• Want the lowest long-term running cost, since e-liquid and coils cost far less than repeated single-use devices
• Are happy to look after removable batteries safely

You may want to look elsewhere if you:

• Want a pocket-sized, grab-and-go device, since dual-battery mods are bulky
• Prefer a tight, cigarette-like mouth-to-lung draw, for which a pod or a high-resistance MTL coil is better
• Are brand new to vaping and want the simplest possible setup with no wattage to adjust
• Do not want to deal with loose batteries and chargers

This is not a product for anyone under 18, and it is illegal to sell nicotine vaping products to under-18s in the UK. It is also not for people who do not already use nicotine. Vaping is intended as an alternative for adult smokers who want to switch, not as something to take up for its own sake. If you are pregnant, have a heart condition or are taking medication, speak to a health professional before using nicotine products, and consider NHS stop smoking services, which can supply vaping starter kits free of charge in many areas.

A fair point on beginners: plenty of people do start on a sub-ohm kit and do well, particularly if they are heavy smokers who found small pods unsatisfying. If you go this route, start at a low wattage, use a low nicotine strength and do not rush the coil priming.

How to set up and use the G-Priv 4

Setting the kit up for the first time takes about ten minutes, plus waiting time for the coil to saturate. Work through these steps in order:

• 1. Check the contents. Make sure the mod, tank, coil, cable and manual are all present, and read the safety card.
• 2. Charge your cells. Fully charge both batteries, ideally in an external charger, before first use.
• 3. Install the coil. If the coil is not already fitted, screw it firmly into the base of the tank by hand. Do not use tools.
• 4. Prime the coil. Drip a few drops of e-liquid into the wicking holes of the coil until the cotton is visibly wet.
• 5. Fill the tank. Open the fill port, tilt the tank and fill slowly down the side, staying below the maximum line and never covering the central airflow tube.
• 6. Wait. Let the tank sit for five to ten minutes so the cotton can absorb the liquid fully.
• 7. Insert the batteries. Match the positive and negative markings inside the battery door, then close it firmly.
• 8. Attach the tank. Screw the tank onto the 510 connector until snug, not overtight.
• 9. Switch on. Press the fire button rapidly the number of times your manual specifies, then check the coil resistance on the screen.
• 10. Set the power. Start at the bottom of the coil's recommended range and take a few gentle puffs before increasing it.

When you first vape, take slow, steady draws of two to four seconds with the airflow set to roughly half open. A direct-to-lung draw means inhaling the vapour into the lungs, as you would take a breath through a straw, rather than holding it in your mouth first. Give the coil a few seconds between puffs so the wick can refill.

Everyday care keeps the kit working. Top up the tank before it gets low so the coil never runs dry. Wipe the 510 connector and base of the tank now and then. Rinse the tank thoroughly with warm water when you change flavour or coil, then let it dry completely before refilling. Lock the fire button when the device is in a bag, using the button sequence in your manual, so it cannot fire accidentally.

When the kit, coils or cells reach the end of their lives, take them to a proper recycling point. Under UK waste electrical rules, retailers that sell vaping products are required to offer take-back, and you can also use your council household waste recycling centre. Never put a vape, a coil or a battery in household waste or a standard recycling bin, where it can start fires in collection vehicles.

Troubleshooting common problems

Most problems with a sub-ohm kit come down to a handful of causes: a poorly seated coil, a flooded or dry tank, a worn-out coil or a tired battery. Work through these before concluding that anything is faulty.

• The mod says there is no atomizer or a check atomizer warning. Unscrew the tank, make sure the coil is fully tightened, and wipe the base of the tank and the 510 connector with a dry tissue. A slightly loose coil is the most common cause.
• A short circuit warning appears. Remove the tank and try firing the mod empty. If the warning goes, the problem is with the tank or coil. Fit a new coil, and check there is no stray cotton or metal near the contact.
• Burnt or acrid taste. The coil is either dry-fired, run at too high a wattage or at the end of its life. Check the tank is not nearly empty, drop the wattage, and replace the coil if the taste persists after a fresh fill and a few minutes of resting.
• Gurgling or spitting. Too much e-liquid has pooled around the coil. Blow through the mouthpiece gently with the tank off the mod, wipe away any excess and consider closing the airflow slightly.
• Leaking from the airflow slots. Check all seals are seated, that the tank is not overfilled and that the coil is tight. Avoid tilting the device upside down for long periods.
• Weak vapour or flat flavour. Usually a worn coil, a wrongly matched e-liquid or wattage set outside the coil's recommended range.
• The battery drains very quickly. Check cell age and brand, and consider whether your wattage is higher than necessary. A damaged or old cell will hold much less charge than its label suggests.
• The device does not turn on. Check both batteries are inserted the right way round and are charged. Try a different pair of cells to rule out a faulty battery.
• Dry hits. The wick is not getting enough liquid. Make sure the coil was primed properly, the e-liquid is not too thick for the coil, and the tank has not run low.

If you have tried these checks and something is still wrong, stop using the device. Do not continue to use a mod that gets noticeably hot, smells of burning, makes a hissing sound or shows physical damage. Remove the batteries, put them somewhere safe and contact the retailer. For a fault on arrival, take photographs of the device and packaging and get in touch promptly so it can be dealt with under your statutory consumer rights.

Value for money

The upfront price of a dual-battery kit looks higher than a single-use vape or a basic pod starter, so the sensible way to judge value is over several months. The big savings come from the running costs. A mesh coil costs a few pounds and lasts one to three weeks, a bottle of 0mg shortfill with nicotine shots costs a few pounds and lasts many days, and batteries last for hundreds of charge cycles. For a regular vaper, that works out considerably cheaper per week than a stream of throwaway or fixed-pod devices, which are no longer an option anyway: the UK banned the sale of single-use vapes from 1 June 2025.

Where the G-Priv 4 does well on value:

• Reusable hardware with replaceable coils, so very little ends up as waste
• An enormous choice of e-liquid, rather than being tied to one brand's pods
• Adjustable power that lets you stretch a coil's life by running it sensibly
• Four finish options on the same internals, so you pay for the hardware rather than a particular flavour

Where it is less of a bargain:

• You must buy batteries separately, which adds cost at the start
• High-power vaping uses more e-liquid and more coils than low-power MTL vaping
• Sweet e-liquids shorten coil life, so heavy dessert vapers will go through more coils

It is also fair to compare the G-Priv 4 with other kits in the market. For a dual-battery device with a strong power ceiling, the obvious alternatives include the Vaporesso GEN 200 at around 220W and the GeekVape Aegis Legend 2 at around 200W. The Aegis Legend is the one to consider if you want a rugged, water- and shock-resistant mod, since that is what GeekVape designs it for. The GEN 200 is a respected rival with its own coil ecosystem. Where SMOK tends to stand out is in coil availability, since SMOK coils are stocked widely across the UK, so you are unlikely to struggle to find replacements. If you want something smaller and less demanding, a pod system from Vaporesso, Uwell or Oxva will use less liquid and fit in a pocket, but they will not give the same cloud or power.

In summary, the G-Priv 4 is good value if you vape often, enjoy a big draw, and are willing to look after batteries and coils. It is poor value if you only vape occasionally or want the lightest possible device, because a simple pod will serve you better and cost less to buy.