Smok RPM 25W Kit Grey Leather

Overview

The Smok RPM 25W Kit Grey Leather by Smok in Grey Leather at 0mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Smok RPM 25W Kit Overview

The Smok RPM 25W Kit is a compact, refillable pod system from Smok, a manufacturer with a long track record in pod and box devices and whose RPM line is one of its most widely stocked families. Rather than a sealed disposable that you bin after a few hundred puffs, the RPM 25W gives you a rechargeable battery body and a replaceable pod with a built-in coil. You buy e-liquid separately, refill the pod, and swap the pod when the flavour starts to fade. Since single-use vapes were banned from sale in the UK on 1 June 2025, a refillable kit like this has become the obvious route for adults who want a vape that is simple to use but does not generate a pile of waste.

The headline number in the name is the 25W maximum output. That sits in a useful middle ground. It is considerably more power than a basic 10W starter pod, so a mesh coil can warm up properly and produce a fuller flavour, yet it is nowhere near the output of a large box mod, which means the device stays small enough to carry in a jacket pocket or a bag without thinking about it. The kit is aimed at people who want a tidy device with some real flexibility: tight, cigarette-like mouth-to-lung pulls on one hand, and looser restricted direct-to-lung draws on the other.

In this guide we go through what the kit does well, where it is limited, and how it compares with similar devices you may be considering. We cover vapour delivery, flavour, build quality, battery life, coil and pod technology, choosing a nicotine strength, setup, troubleshooting and value for money. The aim is an honest picture rather than a sales pitch, so where a point depends on the exact bundle you receive we say so and suggest you check the specification table on the product page.

The kit is available in five variants. These are cosmetic colour and finish options rather than different flavours, because the kit itself does not contain e-liquid. Whichever variant you choose, the internals, coil compatibility and charging behaviour are the same, so you can pick purely on looks.

Finally, a quick note on who this page is for. It is written for UK adults, aged 18 or over, who either already vape or are smokers looking to switch. Vaping is not risk-free and is not recommended for people who have never smoked or vaped, and nicotine is addictive. If you are a non-smoker, this product is not for you.

Key Specifications at a Glance

Specifications for pod kits can vary slightly between regional editions, so treat the summary below as a guide and check the product page for the exact bundle. We have kept to figures that are consistent with how this class of device is built.

• Device type: refillable open pod kit with a built-in rechargeable battery and replaceable coil pods.
• Maximum output: 25W, the figure that gives the kit its name.
• Battery: built-in lithium-ion cell in the region of 1,100mAh, charged by USB-C. Confirm the exact capacity on the listing.
• Pod capacity: UK-market sets are normally supplied with a 2ml pod, because UK rules cap the size of a refillable tank at 2ml. Larger pods exist on international editions but are not the norm for UK retail.
• Coil type: replaceable coils from the RPM range, typically a mesh coil for fuller flavour, with a regular coil available in some bundles or as a separate purchase.
• Filling method: top or side fill through a silicone-capped port, depending on pod generation.
• Airflow: adjustable on the device, allowing a tighter or more open draw.
• Activation: draw-activated, with a fire button on some modes for wattage control.
• Nicotine compatibility: works with nicotine salt e-liquids and with standard freebase 50/50 or 70/30 liquids, within the UK 20mg/ml limit.
• Variants in this family: five colour and finish options.

A few of these points deserve explanation. The 25W figure is a ceiling, not a fixed setting. The device will only deliver the power the coil and your settings call for, and a lower-resistance mesh coil will usually be happier at the upper half of the range while a higher-resistance regular coil will sit comfortably lower. The battery capacity is modest by the standards of large devices but sensible for a pocket-sized body, and with a pod this size it comfortably covers a normal day of moderate vaping.

One useful caution: the RPM range has been through several generations of pods and coils, and not every pod fits every RPM body. If you plan to buy spare pods, check the listing for compatibility with the RPM 25W specifically rather than assuming that any RPM-branded pod will fit. Buying the correct replacement the first time saves a frustrating return.

Performance and Vapour Delivery

Because the RPM 25W is a refillable device rather than a disposable, there is no printed puff count to compare. What matters instead is how many draws you get from a pod and how consistent they feel from the first to the last. As a rough guide, a 2ml pod filled with a nicotine salt e-liquid delivers somewhere in the region of 400 to 600 draws at moderate settings, depending on draw length, wattage and coil. Heavier, longer pulls on a lower-resistance mesh coil will use liquid faster; short, sipping draws at lower power will stretch a fill further. Treat those numbers as an estimate, not a promise.

The 25W ceiling is the key to the character of this device. At the lower end of the range the kit behaves like a typical mouth-to-lung pod: a slight resistance on the draw, a modest cloud, and a throat hit that suits nicotine salts. Raise the wattage and open the airflow and it starts to feel more like a restricted direct-to-lung device, with warmer vapour, a bigger cloud and a more open pull. It will not give you the huge clouds of a high-power box mod, and it is not trying to. What it offers is a flexible middle ground that suits people who vape throughout the day and want to adjust the experience a little without carrying a large device.

Warm-up is quick. Mesh coils have a large surface area, so they reach working temperature in a fraction of a second, which means the first draw after a pause does not feel weak or airy. Consistency across the life of a coil is generally good, with flavour starting to flatten only towards the end of the coil's life, typically a couple of weeks of regular use, though this varies widely depending on the liquid.

Sweet, thick e-liquids shorten coil life because sugars and sweeteners caramelise on the mesh. If you vape dessert and milkshake flavours, expect to replace the pod more often than if you vape fruit and menthol profiles. A higher-VG liquid will also reduce wicking speed at high wattage, so if you notice a dry or burnt taste, drop the power a notch rather than pushing on.

In short, vapour delivery is smooth, predictable and adjustable within a sensible range. It suits adults who want something more flexible than a locked-in starter pod without crossing into advanced, bulky territory.

Flavour Profile and Taste Quality

Because the kit does not ship with liquid, the flavour you experience is entirely down to the e-liquid you choose and how well the coil renders it. That said, the coil does shape the result, and this is where a mesh coil earns its place. A mesh surface heats the liquid more evenly than a traditional round wire wrapped in cotton, so there are fewer hot spots and less chance of a scorched taste. The practical result is that fruit, menthol, tobacco and dessert profiles all come through cleanly, with a rounded middle and a clear finish.

Different e-liquid styles behave a little differently in this kit:

• Fruit and ice blends: these work particularly well. The cooling agent comes through without sharpness at moderate power, and the fruit notes stay distinct rather than muddy.
• Menthol and mint: crisp and clean. At the upper end of the wattage range menthol can feel a touch harsher, so many users keep mint liquids a little lower.
• Tobacco: subtle tobacco profiles benefit from the even heating. Warmer vapour helps the toasted, nutty notes come forward.
• Dessert and custard: rich, thick liquids taste full but are the hardest on the coil. Keep power moderate to protect it.
• Sours and sweets: bold flavours with strong sweeteners can leave a residue on the mesh, so expect shorter pod life.

Flavour fidelity is also affected by pod freshness. A new coil needs a few minutes after filling to saturate fully; if you start drawing too soon you get a dry, slightly burnt first few puffs that can damage the coil from the outset. Wait five to ten minutes after the first fill. Flavour then settles in, and you will notice a rounder, more complete taste than you get from a rushed first draw.

Nicotine strength matters to perceived flavour too. A stronger nicotine salt carries more throat hit, which can mask delicate fruit notes, while a lower strength leaves more room for the flavour to shine. This is one reason many people drift to a lower nicotine strength once they settle into vaping. We cover strength choices in detail further down.

If you like to change flavour often, a tip: rinse the pod gently or use a dedicated pod per flavour family, such as one for fruit and one for menthol, to avoid ghosting, where the previous flavour lingers in the cotton and muddies the next one.

Design and Build Quality

The RPM 25W is built around a slim, rounded body that is comfortable in the hand and discreet in a pocket. The shell is a metal alloy with a smooth coating, which feels sturdier than the plastic bodies found on many entry-level pods and holds up reasonably to the everyday scuffs that come from living in a pocket with keys and coins. The finish varies across the five variants, with some more matte and others glossier, so it is worth looking at the product images to judge which you prefer.

Controls are kept simple. The device is draw-activated, so there is no need to hold a button for every puff, and the layout is easy to learn within minutes. Wattage adjustment and the on or off toggle are handled with a small number of button presses, which are described in the quick-start guide that comes with the kit. This simplicity is a deliberate trade-off. You will not find a full colour screen or a long menu of vape modes, but you will not be digging through settings to take a puff either.

The pod clicks into place magnetically or with a firm friction fit, depending on the generation, and a well-seated pod should not wobble. Take care with the mouthpiece: it is moulded as part of the pod, so it is a point of wear. Keep it clean and avoid biting it, because tooth marks can crack the plastic over time.

Some practical build notes worth knowing:

• Check the pod seating each time you replace it. A pod that is not fully pushed in is the most common cause of a device that appears dead.
• The fill port uses a silicone bung. Press it back firmly after filling so the liquid cannot seep.
• Do not store the device with a full pod lying on its side for long periods in a warm place, as thin liquid can migrate towards the airflow and cause leaks.
• Wipe the battery contacts with a dry cloth if the device stops recognising the pod. A smear of liquid on the contacts is a common issue.

Overall, the build is solid for the category. It is not a luxury device, but it feels well put together, the tolerances are consistent, and the pod interface is a known quantity within Smok's range. For an adult who wants something dependable for daily use, it is a practical, no-fuss design.

Battery Life and Charging

The internal battery is in the region of 1,100mAh, which is sized sensibly for a pocket device running up to 25W. In practical terms, expect a moderate vaper to get through a full day on a single charge. A heavier user, or someone running the device near its upper wattage with a low-resistance mesh coil, may need to top up once during the day.

What affects battery life most:

• Wattage setting: power drawn from the battery rises with the output. Dropping from 25W to 18W can extend a charge noticeably.
• Coil resistance: lower resistance coils draw more current for the same wattage, so they drain the cell faster.
• Draw length: long pulls use more energy than short ones.
• Temperature: lithium-ion cells perform worse in the cold. If you vape outdoors in winter, keep the device in an inside pocket.
• Battery age: after a year or two of daily charging, capacity gradually falls, as it does with any phone or rechargeable device.

Charging is by USB-C, which means you can use the same cable as most modern phones. A full charge from empty typically takes in the region of an hour to ninety minutes on a standard 5V adapter, though exact times vary. Use a reputable charger and cable and avoid cheap unbranded power bricks, because poor-quality chargers can cause overheating and shorten the life of the cell. If your device has a pass-through facility, it may be used while charging, but we recommend simply letting it charge undisturbed whenever you can.

Some sensible safety habits apply to any lithium-ion device. Do not charge the kit overnight on a soft surface such as a bed or sofa. Do not leave it in a hot car. Do not use a device that has visible damage, swelling, or a cracked casing. If the device becomes unusually hot while charging or in use, stop and unplug it. Keep it away from loose coins and keys in a pocket, as a short circuit across the contacts is rare but possible with unprotected metal objects.

When the device finally reaches the end of its life, do not put it in household rubbish. Vapes contain a lithium battery and are covered by waste electrical equipment rules. In the UK you can take it to a retailer that offers vape recycling, or to a household waste recycling centre that accepts small electricals. Many shops now provide drop-off bins specifically for used vapes and pods, which is the simplest way to dispose of them responsibly.

Mesh Coil and Pod Technology

The most important component in any pod system is the coil, and in the RPM family the coil is where much of the design effort goes. The kit is built to take coils from the RPM range, and the mesh variants are the ones most buyers choose. Understanding what is inside the pod helps you get more life and better taste from every fill.

What a mesh coil is. Instead of a round wire wound into a spring, a mesh coil uses a thin, flat sheet of resistance material with a fine grid pattern, formed into a curved shape and wrapped around or alongside organic cotton. The grid provides a much larger heated surface area than a wire coil. More surface area means the liquid is vaporised more evenly and more quickly, which is why mesh coils warm up fast, hold flavour well and produce more vapour for a given wattage.

Resistance and what it means. Coils are rated in ohms. Lower resistance generally means more vapour and a warmer draw at a given power, while higher resistance gives a cooler, tighter mouth-to-lung style pull. In the RPM range, mesh coils sit toward the lower end of the scale, in the region of a few tenths of an ohm, and standard regular coils sit higher, around the 0.6 ohm region. Check the listing to see which coil is included in your bundle, because the right nicotine strength and wattage depend on it.

Care and lifespan. A coil is a consumable. How long it lasts depends on your liquid, your wattage and how you use it. Typical life is in the region of one to three weeks of daily use. Signs a coil is on its way out include:

• A muted or flat flavour, even with fresh liquid.
• A faint burnt or acrid taste that does not clear after a few puffs.
• Gurgling or spitting from the mouthpiece.
• Noticeably thinner vapour than before.

Priming matters. Fill the pod, let it sit for five to ten minutes so the cotton fully saturates, then take a couple of gentle draws without pressing the fire button hard. This protects the coil from dry hits. Do not run the pod nearly empty either. The wick needs liquid contact at all times, and vaping on an empty pod is one of the quickest ways to ruin a coil. Refill when the liquid level falls to about a quarter of the window.

The pod itself is a small plastic reservoir with a silicone seal and a metal base. It can be refilled several times, but it is not designed to last indefinitely, so replace it when the coil shows the signs above rather than trying to nurse a worn one along.

Choosing the Right Nicotine Strength

In the UK, nicotine e-liquid is capped at 20mg/ml, and bottles sold for refilling are limited to 10ml. That cap applies across the board, so you will never find a legal retail e-liquid stronger than 20mg/ml in a UK shop. Picking the right strength within that limit is one of the most important choices you will make with this kit, and the answer depends on how you vape and what you are replacing.

There are two main types of nicotine in e-liquid:

• Nicotine salts: smoother at higher strengths, absorbed more quickly, and the usual choice for mouth-to-lung pod devices. Common strengths are 10mg, 12mg, 18mg and 20mg.
• Freebase nicotine: harsher at higher strengths, so used at lower levels, typically 3mg to 6mg, and better suited to open, direct-to-lung style devices.

Here is a practical way to match strength to your situation when using the RPM 25W:

• Heavy smoker, 15 or more cigarettes a day: a 20mg nicotine salt is a sensible starting point with a tighter draw and a regular coil or a mesh coil at a lower wattage. Many people find that this helps them stop reaching for a cigarette.
• Moderate smoker, 8 to 15 a day: 12mg to 18mg salt works well. With a mesh coil at higher power, 12mg often feels plenty.
• Light smoker or social smoker: 10mg to 12mg salt, or 6mg freebase if you prefer a looser draw.
• Experienced vaper stepping down: 6mg freebase or 10mg salt, reducing gradually as you feel comfortable.

Remember that a low-resistance mesh coil at higher wattage produces more vapour per puff, and therefore delivers more nicotine per puff, than a tight regular coil at low power. If you move from a tight starter pod to this kit and use the same strength, you may find that it feels stronger than expected. If you notice dizziness, nausea, a racing heart or a very harsh throat hit, you are probably overdoing it, so drop the strength or the power, or take a break.

Do not be tempted to jump straight to the maximum strength if you are new to vaping. If you have never smoked, you do not need nicotine at all, and zero-nicotine liquids are widely available. Over time, many people reduce their strength gradually, and the flexibility of a refillable kit makes that easy since you simply buy a lower-strength bottle. Keep all e-liquid out of the reach of children and pets, as nicotine is poisonous if swallowed.

Who the RPM 25W Kit Is For

No device suits everyone, so it helps to be clear about who gets the most from this one and who would be better served elsewhere.

It suits:

• Smokers switching to vaping. The draw can be tightened to mimic a cigarette, and with a nicotine salt liquid it delivers nicotine in a way that many smokers find satisfying. It is a more cost-effective and less waste-heavy route than repeatedly buying single-use devices, which can no longer be sold in the UK anyway.
• Disposable users moving to refillable. If you are used to a sealed device and want something that feels familiar but lets you pick your own flavours, this is an easy step up. Filling a pod takes under a minute.
• Adults who want flexibility. The adjustable airflow and 25W ceiling let you move between a tight and a looser draw without buying a second device.
• Travellers and commuters. The pocket-sized body is easy to carry and USB-C charging means you can top up from a laptop or power bank.
• People who like to experiment with flavours. Because you can use any compatible e-liquid, you are not locked into a single flavour for the life of the device.

It may not suit:

• Non-smokers and under-18s. This product is for adult smokers and existing vapers only. It is illegal to sell vapes to anyone under 18 in the UK.
• Cloud chasers. At a 25W ceiling, this kit will not produce enormous clouds. A larger box mod with higher power is a better fit if that is your priority.
• Anyone who wants zero maintenance. You have to fill, prime and eventually replace pods. If you want something you can just pick up and throw away, you may find refillable vaping a chore, though pre-filled pod systems exist as an alternative.
• Those who want advanced features. If you want temperature control, a large colour screen or fine-grained custom curves, you will need to look at a more advanced device.

If you are undecided, ask yourself how much effort you are willing to put in. The RPM 25W sits in the pleasant middle: more control than a basic pod, less fuss than a mod. For the majority of adult smokers looking for a dependable daily device, that balance is exactly what they want.

How to Set Up and Use the Kit

Getting started takes only a few minutes. Follow these steps in order, and keep the quick-start card from the box for reference on button sequences specific to your bundle.

• Step 1: Charge first. Plug the device into a USB power source with the supplied USB-C cable and give it a full charge before first use. This is good practice for any new lithium-ion device.
• Step 2: Prepare the pod. Remove any protective film or plug from the new pod. Check the coil is seated and that there is no packaging left on the base.
• Step 3: Fill the pod. Open the fill port and gently squeeze e-liquid into the reservoir, aiming at the side wall rather than straight onto the central chimney. Stop just below the maximum line to avoid flooding the airflow. Press the bung firmly back in.
• Step 4: Wait. Let the pod stand for five to ten minutes so the cotton saturates fully. This single step prevents most early coil failures.
• Step 5: Insert the pod. Push it firmly into the device until it seats.
• Step 6: Switch on and set power. Use the button sequence in the guide to turn the device on and choose your output. As a starting point, try a lower-to-mid setting with a mesh coil and move up only if you want more warmth.
• Step 7: Take a few gentle primer puffs. Then vape as normal.

Tips for day-to-day use:

• Take slow, steady draws of two to four seconds rather than very long pulls. This gives more flavour and extends coil life.
• Refill before the pod runs dry, and avoid topping up liquid of a very different flavour into a pod that is already part full.
• If you switch e-liquid type, such as from a thin high-PG liquid to a thick high-VG one, adjust your wattage.
• Store the device upright where possible, and out of direct sunlight.

Routine cleaning is simple. Wipe the mouthpiece with a dry or slightly damp cloth, and clean the contacts and the pod seat with a dry cotton bud now and then. Do not submerge the device in water or run the pod under a tap, as this can damage the electronics and the coil. Always handle e-liquid with care, wash your hands if you spill nicotine liquid, and keep bottles stored upright with the cap secured.

Troubleshooting Common Problems

Most issues with pod kits have simple fixes. Work through the likely causes before assuming the device is faulty.

The device does not fire or shows no response. Check the battery first and charge it for at least 15 minutes. Then remove the pod, wipe the contacts on both the pod and the body with a dry cloth, and re-seat it firmly. Confirm the device is switched on according to the quick-start guide. A pod that is not fully seated is the single most common cause.

Burnt or acrid taste. This usually means the coil is worn, the cotton was not saturated before use, or the wattage is too high for the liquid. Try lowering the power and taking shorter draws. If the taste persists, replace the pod. Do not keep vaping on a burnt coil, because the taste does not improve and the experience is unpleasant.

Weak or flat flavour. Common causes are a tired coil, a nearly empty pod, or a change of liquid. Refill, wait a few minutes, and try again. If a fresh pod tastes just as flat, you may be experiencing vaper's tongue, where your sense of taste temporarily dulls. Switching to a different flavour family or taking a short break often clears it.

Leaking. Leaks often come from overfilling, a loose fill bung, or a pod stored on its side. Fill to just below the max line, press the bung in firmly, and store upright. If leaking continues, inspect the pod for a hairline crack and replace it. Wipe any liquid from the base and contacts before re-inserting.

Gurgling or spitting. Condensation in the airflow channel is normal over time. Blow gently through the mouthpiece with the pod removed, or wipe the channel with a tissue. Persistent gurgling can mean the pod is overfilled or the liquid is too thin for your wattage.

Hard draw or restricted airflow. Check the airflow setting and make sure nothing is blocking the intake. A flooded coil can also cause a restricted draw, so let the pod rest and wipe the base.

Battery drains quickly. A worn battery, high wattage, a low-resistance coil, or cold weather can all contribute. Lower the output and keep the device warm. If the battery is swelling, hot to the touch or deformed, stop using it immediately and recycle it safely.

If you have worked through these steps and the device still misbehaves, contact the shop with your order details and a short description of the fault. A genuine manufacturing fault is covered by your consumer rights, which we cover in the final sections.

Value for Money and Honest Comparisons

Judging value on a refillable kit means looking at the whole cost of ownership, not just the price on the box. The upfront cost covers the battery body, a pod and the charging cable. After that, your running costs are e-liquid and replacement pods or coils. Compared with a habit of buying single-use devices, which can no longer be sold in the UK, refillable vaping is considerably cheaper over time, and compared with smoking, the saving is larger still. A bottle of e-liquid lasts days, and a pod lasts one to three weeks, so the monthly spend is modest. Because you are keeping the battery body and replacing only the pod, there is also far less waste.

Here is how the RPM 25W compares with similar options, with fair points on each side:

• Versus a basic starter pod (around 10W to 15W): the RPM 25W gives more power headroom, better mesh coil flavour and adjustable airflow. Basic pods are simpler and sometimes cheaper, with pre-filled pods that need no filling at all. Choose the RPM if you want more control; choose a basic pod if you want zero fuss.
• Versus the smaller Smok Novo series: the Novo devices are more compact and lean towards pure mouth-to-lung simplicity with lower power. The RPM 25W offers a higher output ceiling and a wider coil choice, though it is slightly larger.
• Versus the larger Smok RPM 40 and RPM 80: the bigger RPM devices offer more power and a larger battery, and are better for those who want bigger vapour or longer days between charges. The RPM 25W is the smaller, more discreet option, and is fine unless you want the extra output.
• Versus Vaporesso XROS-style pods: these are well regarded for simple operation and compact bodies. They compete closely on size and ease of use. The RPM 25W stands out for wattage range and airflow adjustment, while some XROS models are simpler and lighter. It comes down to preference and which coil range you want to buy into.
• Versus Uwell Caliburn-style kits: Caliburn devices are popular, tight-draw mouth-to-lung kits with a strong following among ex-smokers. They are simpler and usually restricted to a lower output. The RPM 25W gives more flexibility if you want a looser draw.

No comparison is complete without limitations. The RPM 25W is not the lightest, the simplest or the most powerful device in its class. It does, however, strike a sound balance between power, size and flavour, and the RPM coil range is widely stocked, which makes spares easy to find in UK shops and online. For a buyer who wants a dependable, flexible daily kit without paying for features they will not use, it represents sound value.

UK buying notes. You must be 18 or over to buy, and age may be checked on purchase and on delivery. Nicotine e-liquid is limited to 20mg/ml and refill bottles to 10ml. Refillable tanks are limited to 2ml, which is why UK-market pods are smaller than some international editions. When you are finished with a device, take it to a vape recycling drop-off point instead of putting it in the bin. For delivery times, charges and the returns policy, see the shop's delivery and returns pages, as these can change.