Relx 12K Ultra Pod Kit Mr Blue

Overview

The Relx 12K Ultra Pod Kit Mr Blue by Relx delivers up to 12,000 puffs in Mr Blue at 10mg and 20mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Relx 12K Ultra Pod Kit overview

The Relx 12K Ultra Pod Kit is a prefilled pod kit from Relx, listed on this store at £7.99 with a rated capacity of 12,000 puffs. It uses nicotine salt e-liquid, it is offered in two strengths, 10mg and 20mg, and it comes in 16 flavours that all share the same price. There is no bottle to open, no coil to prime and no tank to fill, which is the whole point of the format. You take it out of the box, follow the setup steps printed on the pack, and start using it.

Relx is a familiar name in closed pod systems, and the Ultra line sits within its range of prefilled products. A kit rated at this level is built around a rechargeable body used with replaceable prefilled pods, and the 12,000 figure describes what the complete kit is rated to deliver rather than what one sealed pod holds. The next section explains that distinction properly, because it is the most commonly misunderstood number on any big-puff listing.

This guide covers what buyers usually want to know before ordering: how the kit performs, what the flavours are like, how it is built, how to look after the battery, what the coil and nicotine salt technology actually do, which strength to pick, who the kit suits and who should skip it, how to set it up, what to do when something goes wrong, whether the price makes sense, and how it stacks up against similar kits.

Quick facts taken from the listing:

• Brand: Relx
• Type: prefilled pod kit
• Rated capacity: 12,000 puffs
• Nicotine: nicotine salt, available in 10mg and 20mg
• Flavours: 16 in the family
• Price: £7.99 for every flavour

Anything not on that list, such as exact battery capacity, pod volume or charging time, is printed on the packaging rather than on our listing, and we have chosen not to guess at it here. Where this guide touches those areas it describes how products of this type generally behave, not figures for this specific device.

Nicotine is addictive. This kit is intended for adults who already smoke or use nicotine. It is not for anyone under 18 and not for non-smokers.

Puff rating and real-world performance

A puff rating is a laboratory style yardstick. Manufacturers measure it with a machine that draws at a fixed length and interval until the liquid is used up, then publish the result. A person does not vape like a machine. Longer, slower draws pull more liquid per puff, quick sips use less, and the same device can give noticeably different totals in two different hands. Treat 12,000 as a way to compare kits on paper, and expect your own total to land somewhat below it.

The second point is structural. UK rules cap a prefilled pod at 2ml of liquid, and no sealed pod on the UK market holds enough for 12,000 puffs on its own. A kit at this rating is therefore a rechargeable body supplied with replaceable prefilled pods, and the number describes the whole system across everything in the box. Check the pack for how many pods are included before you form expectations about how long a single pod will last.

As a simple planning exercise, and nothing more than arithmetic on the headline rating: at around 200 puffs a day, 12,000 rated puffs would stretch across roughly two months, and at around 400 puffs a day, roughly one month. Real results vary with draw length, nicotine strength and how often you reach for it, so use those figures to get a sense of scale rather than as a promise.

In day to day use, you can expect the following from a closed pod kit of this type.

• Draw feel: Pod kits like this are mouth-to-lung devices. You draw gently into your mouth, pause, then inhale. The airflow is snugger than on a large sub-ohm tank, which is deliberate, because nicotine salt liquid is designed for a smooth, cigarette-like sensation at low power.
• Consistency: Output on a closed pod is set by the device, not by you. There is no dial to turn and no airflow ring to adjust, so the first puff of a fresh pod and the five-hundredth should taste broadly the same until the liquid runs low.
• Throat hit: Governed mainly by the nicotine strength you choose. 20mg gives a firmer hit and 10mg is noticeably softer.
• Vapour volume: Moderate. This is a flavour and nicotine device rather than a cloud-chasing one, which suits discreet use.
• Warm-up: Closed pods are generally ready on the first draw once the wick has had a minute to saturate after the pod is fitted.

Performance drops in a predictable way near the end of a pod. Flavour thins, the vapour can turn warm, and a faint scorched edge may appear. That is the signal to swap the pod rather than keep pulling on it, since drawing on a nearly empty wick is what produces the harsh, burnt taste people sometimes blame on the device.

Finally, remember that big-puff ratings are comparative. A 12,000 rating sits below the 30,000 and 40,000 figures now common in this category, and that is not a flaw. It simply means this kit is positioned as a lower-cost, shorter-lifespan option, which is exactly what some buyers want.

Flavour profile across the 16 options

Sixteen flavours share this listing family, and every one is £7.99 in both strengths. The names give you the direction of each flavour rather than a precise recipe, so use the groupings below as a map. As with any flavoured vape, individual tastes vary, and descriptions from a name alone are an informed guide rather than a guarantee.

Berry and sour berry. This is the largest group and the centre of the range. Blackberry Sour Razz, Blue Raspberry GB, Blue Razz Lemon, Blueberry Cherry Cranberry, Blueberry Sour Raspberry, Strawberry Raspberry Cherry and Sweet Strawberry all sit here. The sweeter entries, such as Sweet Strawberry, lean towards a rounded, candy-like fruit profile. The names carrying Sour or Razz point towards a brighter, tarter edge that cuts through the sweetness and keeps a long session from feeling cloying. The GB tag on Blue Raspberry GB is commonly used for a gummy bear style flavour, which tends to taste sweeter and chewier than a plain fruit.

Icy flavours. Cherry Ice and Pineapple Ice add a cooling element on the exhale. Cooling agents suit hot weather and people who find plain fruit a little flat, but they can mute the fruit itself, so they are a better pick if you want refreshment over complexity.

Tropical. Mango Pineapple is the straightforward sweet tropical option, pairing two fruits that blend well because mango brings body and pineapple brings tartness. Pineapple Ice also fits here for anyone who wants tropical fruit with a cool finish.

Citrus. Lemon Lime is the cleanest, least sweet profile in the range. It reads more like a soft drink than a sweet and clears the palate quickly, which makes it a sensible pick if you tire easily of sugary vapes. Blue Razz Lemon blends a blue raspberry style fruit with a lemon lift for a middle ground between sweet and sharp.

Soft drink and character flavours. Watermelon is a simple, juicy flavour that tends to be one of the easier choices for a first kit. Bru Fizz points towards a fizzy soft drink style, and Huhubaba is a branded name that you are best off treating as its own individual flavour. Mr Blue belongs to the blue fruit family and generally lands somewhere between blue raspberry and a candy-like berry.

If you are unsure, three rules work well. First, choose by what you already enjoy eating or drinking rather than by name, because fruit preference carries over directly. Second, if you dislike sweetness, start with Lemon Lime or one of the sour berries. Third, if you plan to buy more than one kit, pick two contrasting flavours, for example a sweet berry and an icy or citrus one, so you can alternate. Switching between two profiles reduces the palate fatigue that makes a single flavour taste weaker after a week or so.

Design, build and handling

Prefilled pod kits are designed around convenience, and the design priorities are easy to read once you know what to look for: a compact body that fits a pocket, a pod that seats firmly so it will not rattle loose, and a simple interface with as few controls as possible. We do not publish exact dimensions or weight for this kit because they are on the packaging, but the general shape of the category is a slim body that sits comfortably in the hand and slips into a jacket pocket without feeling bulky.

Here is what to check when the kit arrives.

• Pod seating: The pod should click or press firmly into the body and stay there. If it feels loose, remove it and refit it squarely, checking that no packaging film or cap remains on the contacts or mouthpiece.
• Mouthpiece: It should be smooth and free of cracks. A clean, centred mouthpiece matters because the airway runs straight through it.
• Indicator light: Most kits of this type use an LED to show activation, low battery or charging status. The meaning of each pattern is on the pack.
• Finish: The body should be free of loose seams and the surface should feel solid. Minor cosmetic marks from transit are cosmetic only, but anything that affects function is worth reporting to us straight away.

Because the pod holds liquid, orientation matters. Keep the kit upright when you can, particularly when storing it in a bag, and avoid pressing on the pod through fabric, which is a common cause of the slight residue people notice around the mouthpiece. If you notice a small amount of condensation near the airway after a session, wipe it with a dry tissue. That is normal and does not signal a fault.

Closed pod devices are built to be used and replaced rather than serviced. There are no user adjustable parts, and that simplicity is a genuine selling point: nothing to unscrew, nothing to clean, and very little to get wrong. The trade-off is that you rely on the device working as designed, and when it does not, the sensible response is a replacement through us rather than a repair attempt.

Keep the kit away from heat, direct sunlight and anything sharp in a bag, and store it out of reach of children and pets. Treat it the way you would treat any small rechargeable gadget with a lithium battery inside.

Battery, charging and end-of-life disposal

Any kit rated in the thousands of puffs is rechargeable, because no battery small enough to carry would last the distance if it were single use. The charging lead and port type are specified on the packaging, so check that before assuming a cable you already own is the right one. We do not quote a milliamp-hour figure or a charging time for this kit because they are not on our listing, and a made-up number would not help you.

A few habits get the most out of the battery.

• Top up little and often. Frequent short charges are gentler on a lithium battery than repeatedly running it completely flat.
• Do not leave it charging unattended or overnight. Unplug it once the indicator shows it is full.
• Use a sensible power source. A standard phone charger or a laptop port is enough. Avoid damaged or unbranded cables.
• Keep it cool. A parked car in summer is the worst place for both the battery and the liquid in the pod.
• Charge on a hard, uncluttered surface rather than on a bed or sofa, where heat can build up.

One point catches buyers out: the body and the pod do not run out at the same time. A rechargeable body can outlast several pods, so a pod that tastes weak is a pod problem, not a battery problem, and recharging will not fix it. Equally, if the vapour production falls away while flavour is still fine, that points to a low battery and a quick charge is the answer.

When a kit eventually reaches the end of its life, disposal matters. Vapes contain a lithium battery and should never go in household rubbish or kerbside recycling, where a crushed battery can start a fire in a collection lorry or sorting plant. In the UK, shops that sell vapes are expected to take back used devices, and household waste recycling centres run by your local council have collection points for small electrical items. Take the old kit to one of those drop-off points rather than binning it, and do not try to take the battery out yourself.

Recycling is also a good reason to buy a rechargeable kit and finish it properly, rather than abandoning half-used devices at the back of a drawer.

Coil and nicotine salt technology explained

The coil is the heating element that turns liquid into vapour, and in a closed pod kit it lives inside the pod. That detail has a practical consequence: each time you replace a pod you also replace the coil, so you never carry a worn coil from one pod to the next and never have to buy or fit one yourself. We do not state a coil material or resistance for this specific kit because the listing does not give one, but it helps to understand the two designs you will meet across the category.

Mesh coils use a flat or curved sheet of fine metal mesh with a large surface area. Because more of the liquid touches heated metal at once, mesh tends to warm up quickly, produce even vapour and bring out flavour clearly. The trade-off is that mesh can burn if it is drawn on while the wick is dry, which is why the one-minute rest after fitting a pod is worth observing.

Ceramic style elements use a porous ceramic body that holds the liquid and heats it gently and evenly. They are valued for smoothness and for resistance to burning, and they tend to give a slightly softer flavour. Both approaches work well at the low power levels that pod kits run at.

Whichever design is in this kit, the practical advice is the same: let a new pod saturate, avoid long chain-vaping sessions that dry the wick out, and swap the pod promptly once flavour fades.

Nicotine salts are the other half of the technology. Traditional freebase nicotine is harsh at higher strengths, which is why older devices used low strengths and large clouds. Nicotine salt liquid is formulated with an added acid so the nicotine is absorbed more smoothly and feels gentler on the throat, even at strengths that would be uncomfortable in freebase form. That is why salts dominate pod kits: they let a small, low-power device deliver a satisfying hit without a harsh throat sensation.

Salt liquids are also best used at the low power that pod hardware provides. They are not designed for high-wattage tanks, and putting salt liquid into one tends to produce a heavy, unpleasant hit. In a closed pod kit like this one the matching is already done for you, which is one reason prefilled kits are an easy starting point for adults who are new to vaping.

Choosing between 10mg and 20mg

This kit is available in 10mg and 20mg nicotine salt. In UK terms, 10mg per millilitre is 1% and 20mg per millilitre is 2%, and 20mg is the legal maximum for any nicotine vape sold in the UK, disposable or otherwise. You cannot buy a stronger kit from a legitimate UK retailer, and any product claiming to exceed that limit should be treated with suspicion.

Choosing a strength is mostly about how you currently use nicotine. The guidance below is general information rather than medical advice.

• 20mg: Suits adults moving from regular, heavier smoking who want a firm throat hit and good satisfaction from each puff. It is also the sensible pick if you tend to chain-vape on a lower strength and still feel unsatisfied.
• 10mg: Suits lighter users, occasional smokers and anyone who prefers a softer hit. It is also the better choice if you plan to take frequent puffs through the day, because a lower strength is easier to live with when you vape often.

If you are unsure, a useful rule of thumb is to think about how a typical day of your current habit feels. If you smoke ten or more cigarettes a day, 20mg is a common starting point. If you smoke fewer, or only socially, 10mg is likely to be enough. When truly undecided, many people try 10mg first, since it is easier to step up to 20mg than to cope with a strength that was too high.

Signs the strength may be too high include dizziness, nausea, hiccups, a headache or a throat hit that feels harsh rather than firm. If that happens, stop using it, rest, and consider the lower strength next time. Signs it may be too low include constantly reaching for the device, strong cravings shortly after a session, and puffing far more than you expected. Neither is a reason to panic, just a sign to adjust.

Remember that strength is not the same as total nicotine intake. A 10mg kit used constantly can deliver as much nicotine as a 20mg kit used occasionally, so pay attention to your pattern of use as well as the number on the pack. If you are pregnant, have a heart condition or are taking medication, speak to a pharmacist or doctor before using any nicotine product.

Who the Relx 12K Ultra Pod Kit is for

The kit makes the most sense for a particular kind of buyer, and being clear about who that is saves disappointment.

It suits:

• Adults switching from smoking who want a simple, no-maintenance device that is popular with people making that change.
• People who value a low entry price. At £7.99, it costs very little to try a flavour you have not had before.
• Buyers who want choice. Sixteen flavours and two strengths give a wide enough spread that most tastes are covered.
• Anyone who dislikes fiddling with bottles, coils and tanks, and wants a kit that works from the box.
• Light to moderate users who will not get through a very large puff count before the flavour starts to feel stale.

It is probably not the right choice if:

• You are under 18 or you do not currently use nicotine. Nicotine is addictive and this product is not intended for non-smokers.
• You want a nicotine free option. This listing offers 10mg and 20mg only.
• You vape heavily all day and want the lowest possible cost per puff. Higher-rated kits typically work out cheaper on that measure.
• You want to adjust power, airflow or e-liquid yourself. A closed pod kit gives you no control over those, and a refillable system will suit you better.
• You need a device with precisely documented specifications. This listing is intentionally limited to the facts we can confirm.

A particularly good fit is the buyer who has tried a few disposable style vapes, found them wasteful, and wants something rechargeable with a straightforward pod swap. The format retains the ease of a prefilled device while avoiding the throwaway habit.

If you are brand new to vaping, start with one flavour in the lower strength that matches your habit and give it a week before deciding whether to buy more. A single kit at this price is a low-risk way to find out whether closed pod vaping works for you before you commit to anything larger.

How to use the kit, step by step

Setup is quick, but a few details make a real difference to flavour and pod life. The instructions printed on the pack always take priority over the general steps below, which describe how closed pod kits are normally used.

• Step 1, unpack and inspect. Check the body, pod and mouthpiece for damage and make sure the seal on the pod is intact. Remove any protective film or caps as the pack instructs.
• Step 2, fit the pod. Push the pod into the body until it seats firmly. Do not twist or force it. If it will not seat, remove it and check the orientation.
• Step 3, rest for a minute. Leave the kit upright for around a minute so the wick can saturate with liquid. Skipping this step is the most common cause of a burnt first puff.
• Step 4, charge if needed. If the battery indicator shows low or the device does not respond, charge it with the lead and follow the pack for how long.
• Step 5, take gentle first draws. Draw slowly and evenly for two or three seconds, pause, then inhale. Short, gentle puffs are better than long hard pulls.
• Step 6, find your rhythm. Give yourself a few minutes to judge whether the strength feels right before taking more.

Good habits while you use it:

• Keep the kit upright during use and storage where possible.
• Pace your puffs and leave a few seconds between draws so the wick keeps up with demand.
• Do not draw continuously for long periods, which overheats the coil and tastes harsh.
• Replace the pod when flavour fades rather than pushing through a dry one.
• Use the device where vaping is allowed, and be considerate around others, including in cars and indoors.

When you fit a replacement pod, repeat the one-minute rest. It is a small step, but it protects the coil and keeps flavour consistent from the first puff.

The kit is for adult use only. Keep it away from children, and store spare pods in their original packaging in a cool, dry place.

Troubleshooting common problems

Most problems with closed pod kits have simple causes. Work through the list below before assuming the device is faulty.

• No vapour or no response. Check the pod is fully seated and any protective film is removed. Then charge the body, since a flat battery is the usual cause. If it still does not respond after a full charge, try a different pod if you have one, which tells you whether the fault lies with the pod or the body.
• Burnt or scorched taste. Usually a dry wick. Rest the kit upright for a few minutes, take shorter puffs and leave longer gaps. If the taste persists on a fresh pod, the pod may be defective. If it appears at the end of a long session, the pod has simply run its course.
• Weak or muted flavour. Often palate fatigue, especially if you have used the same flavour for days. Try a different flavour for a while. If the flavour fades abruptly and vapour thins, the pod is nearly empty.
• Gurgling or spitting. Excess condensation in the airway. Wipe the mouthpiece with a dry tissue and give a gentle puff to clear it. Avoid blowing back through the device.
• Leaking or sticky residue. Heat and pressure are the usual causes. Keep the kit out of hot places, store it upright and check the pod is seated properly. A small amount of residue near the mouthpiece is normal, and heavy leaking is worth reporting.
• Flashing indicator. The meaning of each pattern is given on the pack for this model. In general, a flash often points to low battery or a pod connection issue.
• Device feels hot. Stop using it, unplug it if it is charging, and let it cool somewhere safe. If it gets unusually hot, swells or smells of burning, stop using it completely and do not charge it again.
• Will not charge. Try a different cable and power source and make sure the port is free of lint or debris.

If you have worked through these steps and the problem remains, contact us with your order number and a clear photo or description. A device that is faulty on arrival or was sent incorrectly is something we fix, not something you should have to chase. Opened consumables cannot be resold, so change-of-mind returns on opened items fall outside the returns policy, which is separate from faulty or wrongly sent goods.

Value for money at £7.99

Price per rated puff is the cleanest way to judge a big-puff kit, because it removes the effect of the different sticker prices. At £7.99 for a 12,000 puff rating, the Relx 12K Ultra Pod Kit works out at roughly 67p per thousand rated puffs. That is a headline figure rather than a real world one, since actual puffs depend on how you use it, but it gives you a consistent basis for comparing different kits.

For context, a kit from this store's own range rated at 33,000 puffs and priced at £11.99 at the time of writing works out at roughly 36p per thousand rated puffs. On that measure, higher-rated kits are cheaper per puff, and anyone who vapes heavily all day will usually spend less over a month with a larger rating. So why would anyone choose the 12K Ultra?

• Lower commitment. £7.99 is a small outlay if you want to test whether you like a flavour or a strength before buying something bigger.
• A shorter horizon. If your use is light or you tire of flavours quickly, a very high rating means living with one flavour for months.
• Strength and flavour choice. Sixteen flavours at the same price makes it easy to switch without any price penalty.
• Predictable cost. The price is the same whichever flavour or strength you choose.

Think about value in terms of how the kit fits your habits, not just the maths. A buyer who uses a kit lightly and replaces it before it is finished is not saving money on a bigger rating, while a heavy user clearly benefits from a lower cost per puff.

Delivery is worth factoring in. UK delivery is free once your basket goes over £20. Three kits at £7.99 come to £23.97, which clears that threshold, so if you were planning to try several flavours anyway, ordering them together saves the postage. Weekday orders placed before 4pm are dispatched the same day, and delivery options, including tracked services, are shown at checkout.

Every order is checked for age. Orders that cannot be verified are refunded rather than sent, which keeps the shop within the rules and protects younger people from buying age-restricted products. We sell genuine stock from our own UK held supply.

How it compares with similar kits

A fair comparison starts with what the Relx 12K Ultra Pod Kit is trying to be: a low-priced, widely flavoured, prefilled kit from an established pod brand, with two strength options. Against that brief, here is how it sits next to the alternatives most buyers consider.

Against higher-rated Relx kits. Relx also sells kits with much higher ratings, including the MAXGO range listed on this store. Those cost more up front and deliver a lower price per thousand rated puffs, with some offering two flavours in one kit. The 12K Ultra wins on simplicity and entry price, and loses on cost per puff for heavy users. It is a sensible first purchase, and a larger kit is a natural next step once you know what you like.

Against other prefilled big-puff brands. Brands such as Elf Bar, Lost Mary, Geek Bar and IVG all sell prefilled kits at similar price points, and many now advertise ratings of 20,000 puffs or more. If your priority is the highest possible rated total for your money, those ratings may beat 12,000. If your priority is a mainstream pod brand, a straightforward format and a wide choice of fruit and ice flavours, this kit is a reasonable match. Compare flavour descriptions, strength options and rated capacity side by side, and remember that real-world satisfaction depends heavily on whether you enjoy the flavour.

Against refillable pod and tank systems. A refillable kit costs more at the start, needs bottles of e-liquid and coils, and requires a bit of learning. In return it can cost less over time and gives you control over flavour, strength and power. If you want something you can use immediately with no maintenance, a prefilled kit like this one is easier. If you enjoy tinkering or vape heavily, a refillable setup is worth considering.

Where the kit is limited. It has no nicotine free option on this listing, no adjustable power or airflow, and a lower rating than the biggest kits on the market. It also has no sealed refill option for the pod on this particular listing, so check the pack and our range for compatible replacement pods before assuming one will fit.

The honest summary is that this is a sensible low-cost, low-commitment kit, and not the cheapest per puff available. If that matches what you need, it does the job without fuss. If you want maximum puffs per pound, look higher up the range.