Watermelon RELX Ultra Refill Pods

Overview

The Watermelon RELX Ultra Refill Pods by RELX in Watermelon at 10mg and 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

RELX Ultra Refill Pods Watermelon: what you are buying

RELX Ultra Refill Pods in Watermelon are prefilled, sealed pods designed to slot into a matching RELX Ultra-series device. There is nothing to pour, no coil to prime and no settings to learn. You unwrap the pod, press it into the device until it seats, and draw. When the liquid runs out you remove the empty pod and fit a fresh one. That single-step routine is the whole appeal of the closed-pod format, and it explains why it has become a common route for adult smokers who want a predictable alternative to cigarettes without learning how to build coils or mix liquids.

Watermelon is a sweet fruit flavour built around the juicy, slightly watery taste of ripe melon. It sits at the gentle end of the fruit spectrum. There is no menthol bite, no sour coating and no heavy dessert layer, which makes it an easy flavour to vape throughout the day without palate fatigue. If you have ever eaten a cold slice of watermelon in summer, or a bag of watermelon chews, you already have a fair mental picture of where this pod is aiming.

Here is what you can reasonably expect from a pod in this category:

• Format: prefilled closed pod, sold in a small multipack. Check the listing for the exact pod count in the pack you are viewing.
• E-liquid capacity: up to 2ml, which is the maximum permitted for a pod or tank sold in the UK.
• Nicotine type: nicotine salt, which gives a smoother throat hit at higher strengths than traditional freebase nicotine.
• Strengths: UK-legal strengths only, with the maximum capped at 20mg/ml. Select the strength that matches your habit when you order.
• Compatibility: built for RELX Ultra-series hardware. Always confirm that your device generation matches before buying, because pods from different RELX families are not interchangeable.
• Age restriction: sold to adults aged 18 and over only.

This page walks through what the pod actually does in daily use: flavour, puff delivery, build quality, the heating system, charging, nicotine strength, troubleshooting, running costs and how it stacks up against alternatives. The aim is to give you enough information to decide whether Watermelon is the right pod for you, without overselling it.

Watermelon flavour profile: what to expect from first puff to last

Flavour is the reason most people choose one pod over another, so it deserves a proper description rather than a one-line summary. Watermelon e-liquids are tricky to get right, because real watermelon is mostly water and has a very delicate taste. Flavour houses tend to solve this by combining a light, candy-style melon note with a touch of sweetness and a faint green freshness that mimics the rind. Expect that general pattern here rather than an exact copy of the fruit.

Here is how the flavour typically unfolds across a single draw:

• Inhale: a soft, juicy sweetness arrives first. It is closer to watermelon sweets than to the raw fruit, with a rounded body and no sharp edge.
• Mid-draw: the melon note settles and a mild syrupy character comes through. This is where the nicotine salt gives a light, warm throat sensation at 20mg/ml.
• Exhale: the finish is clean and short. Watermelon does not linger heavily on the palate, which is part of why many vapers find it easy to use all day.

Some points that help you set expectations:

• It is sweet, not cooling. If you want an icy hit, a menthol or ice-style pod will suit you better. Watermelon on its own is warm-neutral in temperature.
• Fresh pods taste best. The first few puffs after fitting a new pod can taste slightly muted while the cotton wick saturates. Give it a few gentle draws before judging the flavour.
• Flavour fades gradually, not suddenly. As the pod empties you may notice the taste thinning a little before it stops. That is normal and is usually your cue to swap in a fresh pod.
• Taste is personal. Sweetness is perceived differently from person to person, and smokers who have recently quit often find sweet flavours stronger than they expected during the first couple of weeks.

Watermelon is also a flexible flavour for people who like to rotate. Many vapers keep one fruit pod and one fresher or cooler pod on hand and switch between them, which helps avoid vaper's tongue, the temporary dulling of taste that comes from using the same sweet flavour for long stretches. If you notice your favourite pod suddenly tasting flat, try a different flavour for a day or two, drink water, and return to it.

Puff delivery and how long one pod lasts

The honest answer to how long a pod lasts is that it depends on you. Retailers sometimes quote a puff count, and for a pod holding up to 2ml of liquid in this style of device, a reasonable working figure is somewhere around 500 to 700 puffs per pod. Treat that as an estimate, not a guarantee. It is based on typical draw length and typical liquid consumption, and individual results vary noticeably.

Several factors push that number up or down:

• Draw length. A three-second draw uses roughly twice as much liquid as a one-and-a-half-second draw. If you take long pulls, expect to be at the lower end of the range.
• Frequency. Chain-vaping heats the coil without giving it time to recover, which can use liquid faster and affect flavour. Spaced-out puffs generally stretch a pod further.
• Nicotine strength. At higher strengths many people feel satisfied after fewer puffs, so a 20mg/ml pod can last longer in real terms than a lower-strength pod used by the same person.
• Temperature. Cold weather thickens the liquid slightly and can slow wicking, while a pod left in a hot car can leak. Keep your device at normal room temperature where possible.
• Battery level. A device on a low charge may heat less effectively, making vapour feel thin even when the pod still has liquid in it.

For a smoker coming from cigarettes, a rough way to think about it is that a pod might cover anywhere from one to three days of moderate use. A pack-a-day smoker will usually get through pods faster than someone who only vapes socially, and people in their first month of switching often vape more frequently than they expect as they learn to replace the hand-to-mouth habit.

Vapour production on this style of pod is moderate. It is a mouth-to-lung format, meaning you draw into your mouth first and then inhale, much like drawing on a cigarette. It is not designed to produce the large clouds associated with sub-ohm devices, and it is not trying to. The draw resistance is tighter than an open-airflow tank, and that tighter pull is what makes it feel familiar to ex-smokers.

If a pod seems to run out much faster than expected, the usual culprits are very long draws, a device running hot because of repeated rapid puffs, or a pod that has been stored on its side in a warm pocket and has lost some liquid through slight seepage. Section ten covers these cases in more detail.

Pod design, fit and build quality

A refill pod is a small part, but its construction affects everything from flavour to leak resistance. The Watermelon pod follows the standard closed-pod layout used across the RELX Ultra range: a transparent or semi-transparent liquid reservoir, a sealed fill point, a mouthpiece formed as part of the pod body, and a coil assembly with metal contacts at the base that connect to the device.

What to look for when you handle one:

• Seating. A correctly fitted pod clicks or pushes home with a firm, positive feel. There should be no wobble and no visible gap between the pod and the device body.
• Sealing. The fill point is sealed at the factory and is not designed to be opened. Do not try to refill the pod by hand, and do not pierce it. A prefilled pod is intended to be used once and then recycled.
• Mouthpiece. The integrated mouthpiece is shaped for comfortable lip contact and a controlled airflow path. Because it is part of the pod, you get a clean mouthpiece with every new pod, which is a hygiene advantage over reusable tanks.
• Window. A clear section lets you see the remaining liquid level. This is useful for judging when to swap pods before the coil runs dry and the flavour turns harsh.
• Contacts. Gold-coloured or metal contacts at the base transmit power to the coil. Keep them clean and dry. If they pick up lint or residue, an occasional wipe with a dry cloth is enough.

Build quality in this class is generally consistent, and consistency is the reason many people stay with a closed-pod brand. Each pod is filled and sealed on an automated line, and tolerances on the fit are tight. That does not make faults impossible. An occasional pod with a weak seal or a poorly wicked coil is a known risk in any mass-produced pod system, which is why a returns route matters, and why you should keep the packaging and check your pod on arrival.

One practical design point is orientation. Pods hold their liquid with the mouthpiece upright, and storing a device on its side or upside down in a bag can allow a little liquid to move toward the airflow channel. Carry the device upright in a pocket or case where you can, and avoid storing it on a radiator, in direct sun or in a hot vehicle.

Coil and heating technology inside the pod

Inside every refill pod is a small heating element that turns liquid into vapour. In the RELX Ultra family this is a ceramic-based coil system, and understanding what that means helps explain why the pod behaves the way it does.

A traditional vape coil is a wire wrapped around cotton. A ceramic coil replaces much of the cotton and wire arrangement with a porous ceramic body that holds and distributes liquid evenly across a heating surface. The practical benefits of this approach are:

• Even heating. The liquid spreads across a larger surface, which reduces hot spots that can cause a burnt taste.
• Flavour consistency. Because the ceramic does not absorb or alter flavour in the way some cotton does, the taste should stay recognisable from the first puff to the last.
• Cleaner tasting vapour. A stable temperature helps keep the flavour profile intact, which matters for a subtle flavour like watermelon.
• Reliable wicking. The porous structure draws liquid toward the heating surface steadily, though wicking can still lag if you take very rapid successive puffs.

These coils are typically in a higher resistance range than the sub-ohm coils used in larger tank kits. A higher resistance paired with a modest battery produces a gentle, cool-to-warm vapour that suits nicotine salt liquids. It is a design built for efficiency and mouth-to-lung use, not for raw power.

Every coil has a finite life. It is matched to the volume of liquid in the pod, so when the liquid is used up the coil is effectively at the end of its working life too. That is one reason a closed pod is replaced as a whole unit rather than being refilled. Coil build-up and gradual degradation are not something the user has to manage.

A note on dry hits. If you draw on a pod that has run out of liquid, or one that has not yet wicked properly, the coil can burn the small amount of liquid left and produce an unpleasant, acrid taste. Do not push through it. Stop, check the liquid level, and fit a fresh pod. Repeated dry draws shorten a coil's life and can leave a lingering burnt taste even after you change pods.

Battery, charging and pairing the pod with your device

The pod itself contains no battery. Power comes from the RELX Ultra-series device you fit it to, so the experience of using a Watermelon pod depends partly on the charge state and condition of that device. Closed-pod devices in this class typically use a built-in rechargeable lithium-ion battery in the region of 350 to 400mAh, though the exact figure depends on the model, so check your own device's specification rather than relying on a general estimate.

What this means in practice:

• Battery life per charge. A battery of that size usually covers a day of light to moderate use, and often a bit less for heavier users. Many people top up overnight as a matter of routine.
• Charging method. Devices of this type charge through a USB connector or magnetic charging dock, depending on the model. Use the cable or dock that came with your device, or a reputable replacement, and a standard low-power USB source.
• Charge time. Expect roughly one to two hours for a full charge, depending on the device and the power source. An indicator light normally shows charging and full states.
• Battery care. Avoid leaving a device charging unattended for very long periods, avoid extreme heat or cold, and stop using any device that is swollen, hot to the touch or damaged.

Pairing the pod with the right device is the main compatibility check. RELX has released several device families, and pods from one family do not necessarily fit another. Before you buy, confirm that your device is a RELX Ultra-series model that accepts this pod type. If you are unsure, check the model name printed on the device or its box, or contact the shop with a photo and ask.

A few habits help the battery and pod work together properly:

• Charge before the battery is completely flat. Letting a lithium-ion battery sit empty for long periods is not good for its lifespan.
• Fit the pod firmly. A loose pod gives an intermittent connection that can look like a battery fault.
• Do not charge with a wet device. If liquid has leaked onto the contacts, wipe and dry them completely first.

When the device battery eventually reaches the end of its life, which takes many months or years of regular use, it should be taken to a proper electrical recycling point rather than being thrown into household waste. Lithium-ion batteries are a fire risk in bin lorries and waste facilities.

Nicotine strength guidance for UK vapers

Nicotine strength is the single most important choice you will make when ordering, and it is worth getting right. UK law caps nicotine e-liquid at 20mg/ml and limits pods and tanks to 2ml. You will not find stronger pods on a legitimate UK shelf, and any seller offering one should be treated with suspicion. Pods in this range are made with nicotine salt, which behaves differently from the freebase nicotine used in older e-liquids.

As a broad guide, many UK vapers choose along these lines:

• 20mg/ml: commonly chosen by people switching from a regular smoking habit, particularly those who smoked ten or more cigarettes a day. The throat hit is noticeable but smooth because of the salt formulation.
• 10mg/ml to 12mg/ml: a common middle step for lighter smokers, people part-way through reducing their intake, and those who found 20mg/ml too sharp.
• Lower strengths: useful for people tapering down, or for occasional users who want a gentle experience. If you have never smoked, you do not need nicotine at all, and vaping is not recommended for non-smokers.

Signs that your strength may be wrong:

• Too low: you vape constantly, still crave cigarettes, or feel restless soon after a session. Moving up a step may help.
• Too high: you feel dizzy, nauseous, have a pounding heart or a harsh throat hit. Stop, take a break, drink water, and choose a lower strength next time.

Switching from cigarettes is a habit change as much as a chemical one. Some people find that a stronger pod lets them stop smoking more quickly because the cravings are properly managed, then step down gradually over weeks or months. Others prefer to start mid-range and adjust. Neither approach is wrong. What matters is that you are not smoking while you adjust, and that you are honest with yourself about how much you used to smoke.

Nicotine is addictive and is not risk-free. Vaping is widely considered to carry far lower risks than smoking for adults who switch completely, but it is not harmless, and it should not be used by anyone under 18, by non-smokers, or by people who are pregnant unless advised by a healthcare professional. If you want support to stop smoking, local NHS stop smoking services can help alongside vaping.

Who Watermelon pods suit, and who should look elsewhere

No single pod suits everyone, and being clear about fit saves you money. Watermelon RELX Ultra pods suit a fairly specific set of adult users.

They are a good match if you:

• are an adult smoker looking for a simple, low-maintenance alternative to cigarettes;
• already own a compatible RELX Ultra-series device and want a flavour that is sweet without being heavy;
• prefer a mouth-to-lung draw that feels close to smoking;
• want a pod you can fit and forget, with no refilling, no coil changes and no tuning;
• like fruit flavours and want something easy to vape for long stretches of the day;
• want predictable results from a sealed, factory-filled pod rather than a hand-filled one.

They are probably not the right choice if you:

• Do not smoke. Vaping nicotine is aimed at adults who currently smoke. Non-smokers and under-18s should not start.
• Want large clouds. This is a modest vapour format. Sub-ohm kits are designed for much heavier output.
• Prefer menthol or cooling flavours. Watermelon is a plain sweet fruit with no cooling agent.
• Dislike sweet flavours. Tobacco or mint-style pods would feel more natural.
• Own a different device family. Pods are not universally compatible. If your device is not an Ultra-series model, these pods may not fit.
• Want to mix your own liquids. A closed pod cannot be refilled, so a refillable tank or open pod system is the better route.

It is also worth noting how this format compares with disposables. Single-use disposable vapes are no longer legal to sell in the UK following the ban that came into force in June 2025, so a rechargeable device with replaceable pods is now the mainstream way to get a similar convenience. If you were a disposable user, this pod format is the closest equivalent in routine: low effort, flavour-led, and no tinkering. The difference is that the battery stays in the device and only the pod is replaced, which creates less waste overall.

How to fit, use and look after a pod

Using a refill pod properly takes less than a minute to learn, and a few small habits make a noticeable difference to flavour and leak resistance.

To fit a new pod:

• Check the device first. Make sure it is charged and that the pod socket is clean and dry.
• Unwrap the pod. Remove any protective cap, film or plug from the base. Do not touch the metal contacts more than necessary.
• Remove the old pod. Pull the empty pod straight out of the device, keeping it upright.
• Insert the new pod. Line it up and press it into the socket until it seats firmly.
• Wait a minute. Let the cotton and ceramic saturate before the first draw, then take two or three gentle puffs to prime it.

To use it well:

• Draw steadily. A smooth two-second pull is usually enough. Hard, rapid pulls waste liquid and can cause gurgling.
• Pace yourself. Leave a few seconds between puffs so the coil can re-wick.
• Watch the liquid level. Replace the pod when the level gets low or the flavour turns harsh, rather than pushing it to the very last drop.
• Keep the device upright when carrying it. This limits liquid movement toward the airflow path.

To store spare pods:

• Keep them in their original packaging, in a cool, dry place away from direct sun.
• Keep them out of reach of children and pets. Nicotine liquid is harmful if swallowed or spilled on skin.
• Do not freeze them and do not leave them in a hot car.

If you spill liquid on your skin, wash with water. If you get it in your eyes, rinse thoroughly with clean water and seek medical advice if irritation continues. If a child or pet swallows liquid, seek urgent medical help.

When a pod is empty, dispose of it responsibly. It contains small electronic parts and residual liquid, so it should not go in your general rubbish or normal household recycling. Under UK waste rules, shops that sell vaping products are expected to accept used items for recycling, and many local council recycling centres have dedicated small electrical collection points. Check your nearest drop-off point and bring used pods and old devices there.

Troubleshooting common problems with refill pods

Most pod problems have simple causes, and most can be fixed in under a minute. Here are the issues vapers report most often, along with sensible first steps.

• No vapour or no response. Check the device is charged and switched on if your model has a switch. Reseat the pod firmly. Check that the contacts are clean and dry. If it still does nothing, try a fresh pod to rule out a faulty one.
• Weak or muted flavour. The pod may be new and not yet saturated, so wait a minute and take a few gentle draws. If it is near the end of its life, the flavour will naturally fade. A low battery can also dull the taste.
• Burnt or harsh taste. This usually means the pod is empty or close to it, or you have been chain-vaping and the coil has not had time to re-wick. Stop, check the liquid level, and fit a fresh pod if needed.
• Gurgling noise. Excess liquid in the airflow path, often from a hard draw or from the device being carried on its side. Wipe the mouthpiece, hold the device upright and take a few gentle puffs.
• Leaking. Check that the pod is seated properly and not cracked. Store the device upright and avoid heat. If a pod leaks repeatedly from the base, stop using it and contact the retailer.
• Device will not charge. Try a different cable and power source, clean the charging port gently and check for liquid residue. If the problem continues, the device may need replacing.
• Pod will not click in. Make sure you have a pod of the right family. Check there is no packaging left on the base and that the socket is free of debris.
• Throat irritation or coughing. The nicotine strength may be too high for you, or you may be drawing too hard. Try a lower strength and a gentler, shorter pull.

If a problem persists after these checks, keep the packaging, take a clear photo of the issue, and contact the shop. Faulty pods can happen in any mass-produced product, and a good retailer will want to know about it.

A final word on safety. Never use a device that is visibly damaged, swollen, unusually hot or smelling of burning. Stop using it, unplug it if it is charging, and take it to an electrical recycling point. Do not attempt to open or repair a lithium-ion battery.

Value for money and running costs

Value is partly about the sticker price and partly about how long the product lasts, so it helps to think in terms of cost per day rather than cost per pack.

A closed-pod system has two cost components. The first is the device, which is a one-off purchase that should last many months with normal care. The second is the ongoing cost of pods. Because each pod covers roughly 500 to 700 puffs by a reasonable estimate, a multipack tends to last a moderate user somewhere between several days and a couple of weeks, depending on how heavily they vape.

When you compare costs, consider:

• Versus cigarettes. For most regular smokers, switching to a pod system works out noticeably cheaper over a month than buying tobacco, even after allowing for the device. The saving grows over time.
• Versus the former disposable route. A single-use vape used to be a throwaway purchase each time. Replacing only the pod keeps the battery and body in use, which is cheaper and creates less waste.
• Versus refillable kits. Bottles of e-liquid are often cheaper per millilitre than prefilled pods, but you also need to buy coils, fill the tank yourself and accept more maintenance. If you value convenience over the lowest possible running cost, pods are competitive.

Ways to get more from your money:

• Buy multipacks. Larger packs usually reduce the price per pod.
• Match your strength. The right strength reduces over-vaping, which stretches each pod.
• Look after the device. A well-kept battery and clean contacts avoid wasted pods and avoidable replacements.
• Store spares properly. Heat and sun can damage liquid, so cool, dry storage protects your purchase.
• Keep your receipt and packaging. This makes any faulty-product claim far simpler.

Cheaper is not always better value. Unbranded or suspiciously low-priced pods from unknown sources may be counterfeit, mislabelled or filled with unregulated liquid. Buying from a reputable UK retailer protects you from that risk and gives you a clear returns path if something is wrong. A saving of a pound or two is not worth inhaling an unknown product.

How Watermelon compares with other pods and vape options

Choosing a pod means weighing it against the alternatives, and an honest comparison includes cases where another option is the better fit.

Against other RELX Ultra flavours. Within the same range, Watermelon is one of the gentler, sweeter choices. Sour flavours such as sour apple add a tart edge, while ice and menthol-style pods add cooling. If you want fruit without sharpness or chill, Watermelon is a sensible middle path. If you find sweet flavours cloying over a long day, a fresher flavour may suit you better.

Against pods from other brands. Several other closed-pod systems exist, and they differ in pod shape, coil type, battery size and price. The main trade-off is ecosystem. If you already own a RELX Ultra device, staying with RELX pods is simplest, because mixing brands is rarely possible. If you are choosing a new device from scratch, compare pod prices, flavour range and availability in your area before committing.

Against refillable pod kits. Refillable systems let you choose any compatible e-liquid, which means a far wider choice of flavours and often lower running costs. The trade-off is that you must fill, maintain and sometimes replace coils yourself, and leaks during filling are more likely. Prefilled pods suit people who want to avoid all of that.

Against sub-ohm tanks. Sub-ohm vaping produces much larger clouds and a warmer, more intense flavour, but it uses more liquid, more battery and lower-strength nicotine. It is a different experience, better for people who enjoy the hobby side of vaping than for someone who simply wants a cigarette alternative.

Against disposables. Disposable vapes have been banned from sale in the UK since June 2025, so this is no longer a like-for-like choice. A pod system gives you a similar ease of use while letting you recycle the pod and keep the device.

Against nicotine pouches and other products. Pouches, patches and gum deliver nicotine without inhaling vapour. They suit people who cannot or do not want to inhale, but they do not replicate the hand-to-mouth ritual of smoking, which is part of why some people stick with vaping.

Overall, Watermelon RELX Ultra pods are a straightforward, mainstream option for adult smokers who already have the right hardware and want an approachable fruit flavour. They are not the cheapest route, the most powerful or the most customisable, but they are consistent and simple, and for many people that is exactly the point.