Vaptio Cosmo guide, which kit to pick and which coils to use
The Vaptio Cosmo is less a single device than a family of kits built around one coil range, and that is exactly what makes it interesting if you keep an eye on running costs. The catch is knowing which version to buy, which coil value to fit and what may be hard to find later on. This guide, for adult readers, works from the manufacturer’s own coil sheets and from retailer listings, without extrapolating anything.
Which Vaptio Cosmo suits which vaper
For most people the Cosmo 2 is the easiest version to recommend. Its 2 ml tank sits within the UK capacity limit, and its 2000 mAh battery and three power levels cover both a mouth to lung draw and a restricted direct lung draw with the two coils supplied in the box.
The original Cosmo kit is still listed by several British retailers. It has a smaller 1500 mAh battery, charges over micro USB and ships with C1 and C2 coils, which makes it the most basic way into the range. The Cosmo 2 Plus targets vapers who want more battery, with 3000 mAh and up to 35 W, but its tank needs checking before you buy.
In every case the spending that follows the purchase rests on the same consumable, the Cosmo coil, sold in packs of five. That is the real strength of the family, since changing the device does not strand the coils you already own.
The Vaptio Cosmo kits on British shelves
Every kit in the family follows the same broad layout, a box with a built in battery topped by a tank with adjustable airflow. What separates them is battery size, maximum output, the charging port and the tank supplied.
The original Cosmo, the simplest entry
Retailers list the original Cosmo with a 1500 mAh built in battery and adjustable power up to 30 W, charged over micro USB. It comes with two Kanthal coils, the C1 at 1.6 ohm fitted and the C2 at 0.7 ohm as a spare, and its tank holds 2 ml.
Micro USB is the detail that dates it, since the Cosmo 2 and Cosmo 2 Plus both moved to USB-C.
Cosmo 2, the newer reference
Vaptio described the Cosmo 2 as the most compact mod of its kind, with a full metal body. It carries a 2000 mAh battery, tops out at 25 W across three power levels, weighs around 100 grams according to two retailers and charges over USB-C at 1 A.
The box contains two mesh coils, a C5 at 1.0 ohm for mouth to lung and a C6 at 0.7 ohm for a restricted direct lung draw.
Cosmo 2 Plus, more battery and a tank to check
The Cosmo 2 Plus follows the same pattern with a 3000 mAh battery and up to 35 W, again over three levels, and ships with the same C5 and C6 coils. Two retailers give an accepted resistance range of roughly 0.4 to 2 ohm.
Its battery also takes a 3 A charge from a suitable adapter, against 1 A on the Cosmo 2. On a battery half as large again, that higher current more than offsets the extra capacity. The catch is the Cosmo A2 tank supplied with it, covered in the section on UK rules.
Six Cosmo C coils and their wattage windows
Vaptio published a sheet for each Cosmo coil, giving the wire and the recommended power window. Retailers repeat the same values, which lets you choose without guesswork.
| Coil | Resistance | Wire | Recommended window | Intended draw |
|---|---|---|---|---|
| C1 | 1.6 ohm | Kanthal | 10 to 15 W | mouth to lung |
| C2 | 0.7 ohm | Kanthal | 15 to 23 W | restricted direct lung |
| C3 | 1.2 ohm | Kanthal | 9 to 15 W | mouth to lung |
| C4 | 0.7 ohm | mesh | 10 to 20 W | restricted direct lung |
| C5 | 1.0 ohm | mesh | 8 to 13 W | mouth to lung |
| C6 | 0.7 ohm | mesh | 15 to 25 W | restricted direct lung |
The manufacturer presents the C5 and C6 as upgraded versions of the Cosmo coil, and they are the ones supplied with the Cosmo 2 and Cosmo 2 Plus. All of them fit the same way, pushed into the base of the tank with no thread to screw.
The pack of five is the real unit of purchase, so it is the pack rather than the kit that is worth comparing between retailers, the approach of our guide on how to compare vape costs.
Several retailers also state that the Cosmo 2 tank takes the BVC coils made for Aspire’s Nautilus tanks, whereas the manufacturer’s own sheet lists only the C1 to C6. That widens the choice of consumables, but check the compatibility note on the retailer listing, reference by reference, before ordering.
What the resistance value does to liquid and battery use
Choosing between a 1.0 ohm and a 0.7 ohm coil is not just a question of feel. The C5 works between 8 and 13 W and the C6 between 15 and 25 W, so at the top of each window the second draws almost twice the power of the first.
For the same puff length, the energy taken from the battery follows the power. A charge therefore runs down faster with the C6 at full output than with the C5, and the gap shows more on the 1500 mAh of the original Cosmo or the 2000 mAh of the Cosmo 2 than on the 3000 mAh of the Cosmo 2 Plus.
Liquid follows the same logic. More power vaporises more liquid per puff, and a 2 ml tank empties correspondingly faster. A coil of 1.0 ohm or above, used at the bottom of its window, remains the most frugal choice.
Retailers also advise a thin liquid with no more than 50 per cent vegetable glycerine, because the narrow intake holes on Cosmo coils struggle with thicker liquid. Looking at what you spend after the purchase is the approach of our guide to the monthly vaping budget.
What UK rules fix on a Vaptio Cosmo
Refillable tanks are capped at 2 ml in the UK, and nicotine containing liquid at 20 mg/ml in bottles of no more than 10 ml. Whatever goes into a Cosmo tank therefore sits inside those limits.
That cap matters for the Cosmo 2 Plus. Three retailers give its Cosmo A2 tank a capacity of 3 ml, and Vaptio itself highlighted a larger tank capacity on this kit. None of the listings consulted mentions a 2 ml version of that tank, so check the stated capacity before ordering and only accept a 2 ml tank. The original Cosmo and the Cosmo 2, both supplied with 2 ml tanks, avoid the question.
Vaptio Cosmo supply, the point to check before buying
In October 2026 the product page on Vaptio’s official site presents the Tela, Sera and Sumee ranges and no Cosmo model at all. The family is still sold by retailers, but at least one of them already lists the Cosmo 2 and the Cosmo Lite as out of stock.
That is where the shared coil range earns its keep. Retailer compatibility lists cover the original Cosmo, the Cosmo 2, the Cosmo 2 Plus, the Cosmo Lite and the Tyro kit, and Nautilus BVC coils offer a second route.
Before choosing a kit, check that a retailer still offers the coil value that matches your draw, not just the device. The same reasoning applies to the Vaporesso Veco Go and its running costs, where the consumable decides almost everything.
FAQ
Five questions come up regularly about this family of kits, alongside the points covered above.
Is the Vaptio Cosmo suited to direct lung vaping?
Not really. Retailers describe the kits as designed mainly for mouth to lung, with a restricted direct lung draw possible on the 0.7 ohm coils. A wide open direct lung draw is not what they are built for.
How should I prepare a new Cosmo coil?
Soak the cotton visible through the intake holes with a few drops of liquid, fit the coil, fill the tank and leave it to rest for a few minutes before the first puff. Starting on the lowest power level reduces the risk of burning a wick that is not yet fully saturated.
Does the Cosmo 2 have a screen?
No. A light shows the charge level, blue above 30 per cent and red below it, according to two retailer listings. When it turns red, a recharge will be needed soon.
Is a charging cable included?
Yes. Retailers list a USB-C cable in the Cosmo 2 and Cosmo 2 Plus boxes and a micro USB cable with the original Cosmo. No mains adapter appears in the listed contents, so plan for one, particularly to use the 3 A charging of the Cosmo 2 Plus.
Is the Cosmo 2 drip tip a standard fitting?
Yes, it is a 510 drip tip and can be swapped for any other 510 model. The Cosmo 2 Plus kit adds a second drip tip intended for mouth to lung.
Choosing a Vaptio Cosmo, three things to keep in mind
The Vaptio Cosmo is better judged by its coil range than by its box. The Cosmo 2 remains the simplest version to recommend, and the Cosmo 2 Plus brings extra battery provided its tank capacity checks out.
On spending, two levers matter more than anything else. A coil of 1.0 ohm or above, set at the bottom of its window, spares both battery and liquid. And the availability of Cosmo or Nautilus BVC coils is something to check before buying the kit, not after.
The Vaptio Cosmo illustrates a rule that holds for all vaping hardware. A device also commits you to its consumables, and their availability is what decides how long it stays in your budget.
Editorial content for adult readers only. Vaping products can contain nicotine, a substance that causes addiction. Nicotine vaping products are not for sale to anyone under 18 in the UK. This article is not a buying recommendation.
