FreeMax M Pro 3 Tank Rainbow

Overview

The FreeMax M Pro 3 Tank Rainbow by Freemax in Rainbow at 0mg. Free UK delivery over £20, same-day dispatch on weekday orders before 4pm.

Freemax M Pro 3 Tank: What It Is and Who Makes It

The Freemax M Pro 3 Tank is a refillable sub-ohm style tank built around mesh coils. It is a hardware accessory rather than a complete vape, which means it does not contain a battery, and it does not come filled with e-liquid. You pair it with a compatible 510-thread mod or pod-mod device, fill it with the nicotine e-liquid or shortfill of your choice, and vape. If you already own a Freemax kit, or any 510 device with enough output to drive a mesh coil, a tank like this is the part that decides how your vape actually tastes and feels.

Freemax is a Shenzhen-based manufacturer that has been making vaping hardware for many years and is known mainly for mesh-coil tanks and the mods that sit underneath them. The M Pro line is part of that tank family, and the third generation continues the same idea as earlier models: a large-bore mesh coil system designed to turn e-liquid into vapour evenly, with a wide enough surface area that you get flavour without needing to push the power to extremes.

For UK vapers there is a wider context worth understanding. Since 1 June 2025, single-use disposable vapes can no longer legally be sold in the UK, so refillable hardware has become the main route for anyone who wants to keep vaping at a sensible cost. A tank like the M Pro 3 sits at the more flexible end of that spectrum: you control the e-liquid, the nicotine strength, the airflow and the coil. The trade-off is that you also take on a little more routine, such as filling, priming and occasionally replacing a coil.

This guide walks through what the tank is, how it performs, what to expect on flavour, how it is built, what powers it, how the coils work, which e-liquid and nicotine strengths make sense, who should and should not buy it, how to set it up, how to fix common problems, and how it compares with alternatives. Where a precise number depends on the exact pack or the revision supplied, we say so rather than guess, and we recommend checking the specification table on this page and the printed details on the box before you commit to a coil range or device pairing.

• Type: refillable mesh-coil tank (hardware accessory)
• Brand: Freemax
• Battery included: no, it needs a separate 510-thread device
• Finishes: several colourways are listed under the same product family, with the same internals
• Age restriction: 18+ only, in line with UK law

Specifications at a Glance

Before getting into performance, it helps to set out what a tank in this class normally offers and what to confirm for the specific unit you receive. Manufacturers occasionally revise coil codes, thread seals and top-cap designs between production batches, so treat the list below as the framework you should check against the packaging rather than a substitute for it.

• E-liquid capacity: UK rules cap the capacity of a tank at 2ml, so the version sold here is built and supplied for 2ml. Some boxes also include a taller replacement glass section intended for use outside the UK. You should not use an oversized glass in the UK market, and we do not recommend modifying the tank beyond what is supplied.
• Connection: standard 510 thread, which is the most common connector on mods and many pod-mod devices. A good fit matters, because a tank that sits slightly proud of the device or sits loose can cause intermittent firing.
• Coil system: Freemax mesh coils. Mesh coils for tanks of this type commonly sit in the sub-ohm range, often somewhere between roughly 0.12 and 0.3 ohm depending on the coil. Always match the coil you buy to the code printed on the coil head currently fitted.
• Power window: each coil head prints a recommended wattage range. Mesh sub-ohm coils generally want a mid-range output and are not designed to be run on very low power. Treat the printed range on the coil as the rule, not a guideline.
• Airflow: an adjustable airflow ring lets you choose between a tighter, more restricted draw and a looser, more open one. More air generally cools the vapour and softens flavour; less air concentrates flavour and increases warmth.
• Filling: tanks in this family are designed to be filled from the top by sliding or rotating a cap, which avoids having to unscrew the whole tank and risk spilling liquid into the device.
• Construction: a stainless steel body with a glass section. Glass can crack if the tank is dropped on a hard floor, so a spare glass section is a sensible thing to keep if you are rough on your kit.

If a number above matters to your purchase, for example if you are pairing the tank with a low-wattage pod-mod and need to know the minimum power a coil will accept, compare the printed range on the replacement coil listing against the maximum output of your device. A mismatch is the single most common cause of disappointment with mesh tanks, and it is entirely avoidable with a minute of checking.

Performance and Vapour Delivery

The defining feature of any mesh tank is how it handles wicking and heat. A conventional wire coil is a spiral of resistance wire wrapped around a cotton core, which means the heat is concentrated along a relatively narrow line. A mesh coil is a flat sheet of resistance material formed into a cylinder, lined with cotton on the inside or behind it. The consequence is a much larger heated surface. In practice that translates into three things you can feel when you use the M Pro 3.

• Quick ramp-up: the coil reaches working temperature within a moment of pressing the fire button, so there is little delay between pressing and drawing.
• Even heating: because the surface area is wide, e-liquid is vaporised more consistently across the coil. That reduces the harsh, dry edge you sometimes get when a narrow wire spot overheats.
• Dense vapour at moderate power: you can get a satisfying cloud and throat feel without driving the coil at the top of its range.

The draw style is what most people call mouth-to-lung, meaning you draw into your mouth first and then inhale, in the same way you would with a typical sub-ohm. Some users run a tighter airflow setting and draw direct, but a sub-ohm mesh coil is not primarily designed for the restricted, tight pull associated with high-resistance pod systems. If your habit is a tight, cigarette-like pull, make sure you are comfortable moving towards a more open draw before choosing a tank like this.

Output depends strongly on three things you control: the wattage you set, the airflow you choose, and the thickness of the e-liquid. A higher-VG liquid is thicker and wicks more slowly, so a mesh coil at the bottom of its recommended range can struggle to keep up. A more balanced liquid will wick more easily. When a coil is new and fully primed, a tank like this can deliver steady output for the whole 2ml fill without needing to be tilted or coaxed.

In everyday use the main things to watch are consistency over the first and last third of the tank. If you notice the vapour getting thinner or the taste turning slightly toasted as the level falls, that is a cue to refill rather than keep pushing the last few drops. Running the tank dry is the fastest way to burn a coil, and a burnt coil does not recover.

Flavour Profile

Flavour from a mesh tank tends to be clear and rounded rather than sharp. Because the coil has a lot of surface area, the heat per unit of liquid is relatively gentle, and that allows delicate top notes such as citrus, soft fruits and dessert flavours to come through without being scorched. At the same time, a tank at this power level still generates enough warmth to give richer profiles, including creams, custards, tobacco blends and sweets, a defined body.

What you will notice most is flavour definition at moderate wattage. A good mesh coil is not defined by sheer cloud size; it is defined by how many layers of a flavour you can pick out. Fruit and ice blends keep the fruit and the cooling distinct. Dessert and bakery flavours keep the sweetness without becoming muddy. Because every coil starts a little unevenly and then settles, expect the first few tanks of a new coil to taste very slightly different from the third or fourth. This is normal. It is worth running a few fills before deciding whether a particular flavour suits you.

Airflow changes flavour considerably, and it is worth experimenting rather than leaving the ring where it came.

• Tighter airflow: concentrates flavour, warms the vapour and extends the life of each tank of liquid, but can feel hot on long pulls.
• Medium airflow: the usual starting point, a balance of flavour and cooling.
• Open airflow: cools the vapour and produces a larger, airier draw, but dilutes flavour slightly and uses liquid faster.

Sweet liquids deserve a note. Heavily sweetened e-liquids contain sweeteners that caramelise on the coil over time, building up a dark film that dulls flavour. If you vape sweet profiles and notice taste fading well before the coil should be spent, the cause is usually residue, and a new coil will restore the original taste. Using a slightly lower wattage with sweet liquids can help the coil last longer.

Finally, remember that the tank itself does not impart flavour. A stainless steel and glass tank is neutral, and the profile comes from the liquid, the coil and the way you set the power. If you switch liquids, rinsing the tank with warm water and drying it fully will prevent flavours carrying over between fills.

Design and Build Quality

The M Pro 3 follows a design language Freemax has used across much of its tank range: a straight-sided glass section held between a stainless steel base and a top cap, with an airflow collar near the base. The aim is a tank that is simple to handle, easy to fill, and neat on a standard-width mod. A short, wide shape also keeps the vapour path compact, which helps with flavour.

• Body: stainless steel construction for the base and top cap. This is a durable choice and tolerates routine handling, although it will pick up fingerprints and minor scratches over time.
• Glass section: a transparent window so you can see the liquid level at a glance. Glass is brittle by nature, so avoid dropping the tank and avoid cleaning it with anything abrasive.
• Top-fill access: the top cap opens to expose a fill port, which allows refilling without removing the tank from the device. Fill gently and aim for the side of the port rather than the central airflow tube, because any liquid that enters the central tube will flood the coil.
• Airflow control: a ring near the base rotates smoothly between settings. It should have enough resistance that it does not move by accident in a pocket or bag.
• Seals: silicone O-rings seal the glass and base. If these are seated properly the tank should not weep. If you ever strip the tank for cleaning, check that the seals are returned to their original positions and not twisted.

Fit and finish is generally consistent for the price class. Threads should engage smoothly without grinding. If a thread feels rough or gritty, wipe it with a dry cloth to remove any dust or residue before assuming something is faulty. The colourways listed under this product differ in finish only, and the internals are the same across them.

It is worth being honest about the limits. A tank at this price will not match the fit tolerances of premium machined tanks, and you may find the airflow ring slightly stiffer or looser from one unit to the next. Small cosmetic variance between batches is normal. What matters in daily use is whether it seals, whether the coil seats cleanly, and whether it fills without drama, and a tank from an established maker like Freemax generally does all three when the user follows the instructions.

Power, Battery and Charging Considerations

Because this is a tank and not a complete device, it has no battery of its own and nothing to charge. The power source is whichever mod or pod-mod you attach it to. That does not make battery questions irrelevant. Quite the opposite: the device you choose will largely determine how the tank performs and how long a day of vaping lasts.

Mesh sub-ohm coils draw more current than the high-resistance coils found in small pod systems. Practical consequences follow from that.

• Match the device to the coil: check the wattage range printed on the coil and make sure your device can reach it. A device with a very low maximum output may be unable to fire a lower-resistance mesh coil properly, and a device that is too powerful may run it harder than intended if you are not paying attention to the setting.
• Battery size matters: a device with a small internal cell will drain much faster at 25 to 40 watts than at 10 to 15. As a rough guide, a typical internal battery in the region of 1,000 to 3,000mAh will give a few hours of heavy use at mid-range power, and a device that takes removable cells gives you the option to swap in a spare.
• Use the right charger: for devices with an internal battery, charge using a reputable USB cable and a standard wall adapter from a known brand. Avoid cheap unbranded chargers, because poor-quality supply is a common cause of battery problems.
• Removable cells: if your device takes 18650 or 21700 cells, use only cells from a reputable seller that are rated for the continuous current your device can draw, keep them in a protective case when not in use, and never carry loose cells in a pocket with coins or keys.
• Never leave charging unattended: do not charge overnight on a soft surface, and stop using any device that gets unusually hot, swells, or smells of burning.

Recycling is easier than many people expect. Vapes and vape batteries must not go in household bins or kerbside recycling. Under UK waste electrical rules, retailers that sell vaping devices are expected to take them back, and many supermarkets and household waste recycling centres have dedicated drop-off points for small electricals and batteries. The tank itself is a metal and glass component without a battery, so it is far easier to recycle than a complete device, but check with your local council about what they accept.

Mesh Coil Technology and Coil Life

The coil is the working heart of the tank, and understanding it will save you money. Freemax mesh coils for tanks of this type use a woven or stamped mesh sheet, usually in a nickel-chromium or stainless alloy, rolled into a cylinder and paired with organic cotton. The coil head sits in the base of the tank and is screwed in by hand. The cotton wicks liquid through ports in the side of the coil head, and the mesh heats it.

Compared with traditional round-wire coils, mesh offers several practical advantages.

• Larger vaporising area: more liquid vaporised per second at a given power.
• Consistent flavour: a more even temperature across the surface.
• Faster response: shorter ramp-up time.
• Easier fitting: screw-in replacement coil heads require no building skills.

There are limitations too. Mesh coils are generally more power-hungry than small-wire coils, and they tend to prefer a steady power band. They can also be more sensitive to dry hits if the cotton is not fully saturated, which is why priming matters so much.

How long a coil lasts depends on how you vape, but a reasonable expectation for a mesh coil is somewhere between one and three weeks of regular use. The factors that shorten life are well known.

• Sweet liquids: sweeteners build up residue on the mesh.
• High VG liquids at low power: thick liquid wicks slowly and can leave the cotton dry.
• Chain vaping: repeated pulls without a pause do not give the cotton time to re-saturate.
• Running low on liquid: vaping the last few drops chars the cotton.
• Too much power: pushing the coil above its printed range.

Signs that a coil is spent are consistent. Flavour turns flat, muted or slightly burnt even with fresh liquid, the vapour feels hotter and harsher, and you may hear a faint crackle. At that point changing the coil, not the liquid, is the answer. Resist the temptation to squeeze extra days from a failing coil, because it only teaches you to dislike the tank.

When buying replacements, buy the exact coil code listed for this tank and check that the pack contains a genuine product. Counterfeit coils circulate widely in the vaping world, and they perform inconsistently and can be unsafe. Buying from an established UK retailer avoids that risk.

Choosing E-Liquid and Nicotine Strength

The tank does not contain nicotine itself, so the nicotine you take in is entirely decided by the e-liquid you choose. UK rules shape that choice. Nicotine e-liquid in the UK is capped at 20mg/ml, and bottles of nicotine liquid are limited to 10ml. That 20mg ceiling is the same figure that applied to the disposable vapes and prefilled pods many people used before the disposable ban. It is a legal maximum, not a recommended starting point, and a sub-ohm style tank behaves very differently from a small pod at the same strength.

Here is why strength needs more thought with a mesh tank. A sub-ohm coil produces a large volume of vapour per puff. If you used a high nicotine strength in a high-output setup, you would receive a large dose of nicotine per puff, which can feel harsh in the throat and can cause nausea, dizziness or headaches. For that reason, sub-ohm style vaping traditionally uses much lower strengths than small pod devices.

• 0mg to 3mg: the usual territory for people who vape mostly for flavour or have already reduced their nicotine intake. Shortfill liquids, which are sold as 0mg in larger bottles and can be mixed with nicotine shots, are commonly used in this range.
• 3mg to 6mg: a typical range for former light smokers or those stepping down from higher strengths. Many people find this range comfortable on a mesh tank at moderate wattage.
• 6mg to 12mg: for heavier former smokers who find lower strengths unsatisfying. At this level, a tighter airflow and moderate power usually feel smoother than an open draw at high wattage.
• Nic salt liquids (10mg to 20mg): designed for low-power, high-resistance devices. Nic salts at these strengths are not generally suited to a high-output sub-ohm tank, because the volume of vapour combined with the higher nicotine can be overwhelming. If you want to use nic salts, run them on a higher resistance coil at lower power, if your tank supports one.

Consider the VG and PG balance as well. A 50/50 liquid wicks easily and suits a wide range of coils. Higher VG liquids, such as 70/30 or 80/20, produce denser vapour but need a coil designed to wick thicker liquid, and they can struggle at low wattage.

If you are new to vaping, or you are a non-smoker, be aware that nicotine is addictive and vaping is not recommended for people who do not currently smoke. If you are using vaping to stop smoking, the NHS provides free stop-smoking support through local services, and starting at a strength that matches your previous habit, then reducing gradually, is a widely suggested approach.

Who the Freemax M Pro 3 Tank Suits

No tank suits everyone. Being clear about who gets the most from the M Pro 3 helps you decide quickly whether to buy.

It is likely to suit you if:

• You already own a compatible 510 mod or Freemax kit and want a fresh tank or a replacement for a worn one.
• You prefer a mouth-to-lung draw with a looser airflow and a bit more vapour than a basic pod provides.
• You enjoy trying different e-liquids and want to control the nicotine strength and flavour yourself.
• You want screw-in replacement coils rather than building your own.
• You are moving away from disposable vapes and want something refillable that costs less to run over time.

It may not suit you if:

• You want something you can use straight out of the box with no filling, charging or maintenance. A tank has no battery and no liquid, so you need to sort out both.
• Your device has a low maximum output, which may prevent a sub-ohm mesh coil from working properly.
• You prefer a very tight, cigarette-like pull. A pod system with a higher resistance coil will feel closer to that.
• You are a non-smoker. Vaping is for adult smokers who want an alternative, and we do not encourage anyone who does not already use nicotine to start.
• You do not want to deal with occasional leaks, priming and coil changes. All tanks need a little care, and this one is no exception.

For people moving over from disposables, a useful way to think about it is that you are trading convenience for control and cost. A disposable is simple but ends up in the waste stream, and in the UK it is no longer legally available for sale. A tank on a rechargeable device asks for a few minutes of routine every day or two, in return for a lower cost per millilitre, a much wider choice of flavours and strengths, and a lot less waste.

Finally, this is an 18+ product. Age verification is required at checkout, and it should be kept securely out of the reach of children and pets. Nicotine e-liquid in particular should be stored in a childproof, closed container.

How to Set Up and Use the Tank

Setting up a mesh tank is straightforward, but the first ten minutes decide how well the coil performs for its whole life. Follow these steps in order.

• Rinse and dry: if the tank is new, rinse the components in warm water and let them air dry fully. Do not use soap residue that you cannot rinse away.
• Fit the coil: check the coil code against the tank, then screw the coil head firmly into the base by hand. It should be snug, not forced. A loose coil can leak or give a poor connection.
• Prime the coil: put a few drops of e-liquid directly into the ports on the side of the coil head, and a drop or two into the central hole, taking care not to flood it. This saturates the cotton before you ever fire the coil. Skipping this step is the most common cause of a burnt first coil.
• Assemble and fill: reassemble the tank, open the top cap and fill with e-liquid, directing the liquid at the side of the fill port rather than straight down the central tube. Do not fill above the marked line.
• Wait: leave the filled tank to stand upright for five to ten minutes so the liquid can soak through the coil. This is the step people skip most often, and the one that matters most.
• Set the airflow and power: start with the airflow ring halfway open and your device set to the lower-to-middle part of the coil's printed range. Take a few gentle puffs, then raise the power in small steps until the vapour and flavour feel right.

Daily habits that protect your tank:

• Refill when the level gets low, rather than waiting for the tank to empty.
• Pause between long pulls so the cotton can re-saturate.
• Store the device upright, and avoid leaving it in a hot car or direct sunlight.
• Wipe condensation from the base and the threads to prevent poor contact.
• Clean the tank between coil changes by rinsing the parts in warm water and letting them dry completely.

When it is time to change the coil, empty the tank, unscrew the old head, and dispose of it responsibly. Used coils contain residue and small metal components, so wrap them and follow your local council guidance for small metal and electrical items, rather than putting them into the kerbside recycling. Never dispose of a vape battery in household waste or recycling bins; use a dedicated battery or small-electricals collection point.

Troubleshooting Common Problems

Most problems with a tank like this are small and fixable. Work through the likely causes in order before assuming the product is faulty.

• Dry or burnt taste right after a refill: the cotton is not saturated. Let the tank stand for five to ten minutes after filling, and take a few gentle, short puffs before drawing hard. If the taste persists, the coil may already be damaged and needs replacing.
• Gurgling or spitting: too much condensation or too much liquid in the chamber. Close the airflow slightly, lower the power a touch, and wipe the central tube. Avoid overfilling.
• Leaking from the base or airflow holes: check that the coil is screwed in fully and that the silicone seals are seated correctly with no twist. Check the glass for hairline cracks. If you filled the tank by pouring liquid into the central tube, the coil may be flooded. Wipe the tank and let it settle.
• Leaking at the fill port: the cap may not be seated. Close it firmly and check the seal.
• No vapour or device says no atomiser: the tank is not making contact. Remove it, wipe the threads and the centre pin with a dry cloth, and refit. If the problem remains on another tank, the device may be at fault.
• Weak vapour from a new coil: prime again and wait a few minutes. Also check that your wattage is within the printed range for the coil.
• Hot, harsh vapour: reduce wattage or open the airflow. If you are using a very high VG liquid at low power, switch to a thinner liquid.
• Flavour dulls quickly: residue from sweet liquids. A new coil usually restores the flavour. Consider lowering the power slightly with sweeter liquids.
• Cracked glass: stop using the tank immediately and replace the glass section. Do not vape with a damaged tank.

If a device overheats, smells of burning, or a battery swells, stop using it at once, remove it from the charger, and place it somewhere non-flammable. Do not attempt to repair it yourself. Contact the retailer or manufacturer, and dispose of any damaged cells through a proper battery collection point.

If you have worked through the list and the tank still misbehaves, get in touch with us. Provide your order number, the device you are using and a short description of the issue, and we can advise on the next step.

Value for Money, Honest Comparisons and UK Rules

On running costs, the numbers are on the side of refillable hardware. A tank such as the M Pro 3 is a one-off purchase, and the continuing costs are e-liquid and a replacement coil every one to three weeks. For most regular vapers that works out cheaper per month than a steady stream of single-use devices ever did, and you are no longer paying for a battery and plastic casing each time you finish a unit. The saving depends on how much you vape and which liquids you buy, so treat any figure as a rough guide.

Here is how the tank sits against some common alternatives, as fairly as we can judge.

• Against a pod-mod system with prebuilt pods: pods are simpler and usually lighter, with no priming of coils and less chance of a leak. They suit tighter draws and nicotine salts. The M Pro 3 offers more vapour, a more open draw and the freedom to use bottles of any flavour, but asks for more routine.
• Against other mesh tanks from rival makers: several brands make comparable mesh tanks in the same price band, and each has its own coil range and character. Freemax coils are widely stocked in UK shops, which makes replacements easy to find, and that is a practical advantage over lesser-known brands. Some premium tanks use tighter machining or a more elaborate airflow system. If you want those refinements and are happy to pay more, they are available, but they are not required for a good everyday vape.
• Against older round-wire tanks: mesh offers better flavour and faster response with less fuss. Round-wire coils can last longer for some users and cost less, but flavour and consistency are generally not as good.
• Against rebuildable tanks: if you enjoy building your own coils and want full control, a rebuildable tank is the better fit. For everyone else, screw-in mesh heads are far easier.

There are honest downsides. It is a tank, so it needs a compatible device and liquid, which adds to the initial outlay if you are starting from nothing. Mesh coils are a consumable, and a wrong match between coil range and device power will give a poor experience. And as with any glass tank, a drop onto hard flooring can break it.

On UK rules: the tank is limited to 2ml in this market, nicotine e-liquid is capped at 20mg/ml and sold in bottles of up to 10ml, and the product is for sale only to those aged 18 or over. Single-use disposable vapes can no longer be sold, so a refillable system is now the standard route. Delivery is by UK courier. Please recycle your old hardware and batteries through the proper channels instead of the household bin.

Overall, the Freemax M Pro 3 Tank is a sensible choice for adult smokers and existing vapers who already have the right device, want clearer flavour and denser vapour than a basic pod, and are happy to spend a few minutes on routine care. If you want the simplest possible experience or have a low-power device, a prefilled pod system will probably serve you better.