High wattage vape kits, watts, batteries and e-liquid

On the spec sheet of a powerful mod, the figure in the spotlight is usually the maximum wattage. It says little about the device you will actually hold. A high wattage vape is better read through four figures that work together, and each one carries a running cost, in e-liquid, in batteries and in weight, that shop listings tend to leave out. Before looking at models, it helps to know what those figures commit you to.

What a high wattage vape actually is

A high wattage vape is a mod that can deliver a lot of power, running on one or two removable batteries, with a sub-ohm tank or an RDA screwed on top. The term describes less a size than an ability to drive low-resistance coils hard, for direct-lung vaping.

That choice has three consequences no wattage figure shows. E-liquid goes faster, the batteries work harder, and the whole kit weighs and bulks more than a compact device. The sections below put numbers on each one.

The four figures behind a high wattage vape

Four specifications are enough to place a device like this. To make them concrete, here are two well-documented references, a dual-battery mod and the tanks that come with it or resemble it.

Maximum wattage

The Geekvape T200, also sold as the Aegis Touch, adjusts from 5 to 200 W in 1 W steps according to its official product page. That ceiling is headroom. The coils you fit run lower, within the ranges their makers print.

Number and size of batteries

The same mod runs on two external 18650 cells, which are not in the list of box contents. The second cell is not just there for battery life, it shares the electrical load, which changes the current each one has to supply.

Tank capacity

UK rules cap e-cigarette tanks at 2 ml. Hence two versions of the same tank, 5.5 ml or 2 ml for the Z Sub-Ohm 2021 tank sold with the T200, and 8 ml or 2 ml for the Smok TFV12 Prince.

Resistance range

The T200 accepts coils from 0.1 to 2 ohms. Sub-ohm coils sit at the bottom of that range, like the 0.15 ohm Z coil fitted in the kit, rated for 70 to 85 W.

More watts, more e-liquid, the numbers behind it

No manufacturer publishes e-liquid use per watt, since it depends on the build, the cotton and how long each puff lasts. The link can still be put into figures without inventing anything, through the energy sent into the coil.

Power is energy per second. A 3-second puff at 40 W sends 120 joules into the coil, and the same puff at 80 W sends 240. Part of that heats the metal and the passing air, the rest vaporises the e-liquid held in the cotton.

With the same build and the same puff length, doubling the wattage therefore doubles the energy available to vaporise liquid. Consumption moves the same way, though not necessarily in exact proportion, as losses do not stay constant from one setting to the next.

The trend, without a maker’s figure

The trend shows without any maker’s figure. With the same coil and puffs of the same length, the same 2 ml tank gives fewer puffs at 80 W than at 50 W.

Coil life follows the same curve, because some makers express it as a volume of e-liquid. The Z coils in the T200 kit are rated for up to 60 ml, which is thirty fills of a 2 ml tank. The higher your daily consumption, the sooner those thirty fills come round.

What the wattage asks of your batteries

This is the central safety point of any high wattage vape. On a regulated mod, the chip delivers the power you set whatever the coil, and the battery pays for it in current.

The sum, cell by cell

The current drawn from a battery is estimated for the most demanding case, a nearly flat cell, taking 3.2 V under load and a conservative 90% chip efficiency. It equals P ÷ (3.2 V × 0.9), in other words the power supplied by that cell divided by 2.88.

On a single-battery mod, 80 W therefore draws 27.8 A and 100 W draws 34.7 A. On a dual-battery mod with matched cells, each one supplies half the power, whether they are wired in series or in parallel. At 200 W each cell delivers 34.7 A, the same as a single cell at 100 W, and at 100 W it falls to 17.4 A.

What the coil does not change

Swapping a 0.4 ohm coil for a 0.15 ohm coil at the same wattage makes no difference to that current. Only the voltage across the coil moves, since it equals √(P × R), which gives 5.66 V on 0.4 ohms and 3.46 V on 0.15 ohms at 80 W.

On a regulated mod, it is the wattage you set, not the resistance, that decides how hard the battery works.

Comparing with the right figure

That current is compared with the battery’s continuous discharge rating, as published by the cell maker, not with a pulse figure. The battery headroom checker on our home page runs this sum for a single-battery mod. It does not apply to a mechanical mod.

Batteries travel in a hard case, charge on a suitable charger and are replaced as soon as their wrap is nicked.

Weight, bulk and battery life, the price of power

Two 18650 cells, a mod to hold them and a sub-ohm tank make a kit you carry in your hand or a bag rather than a shirt pocket. The tank alone adds up, with Smok listing 60 g, a 28 mm diameter and a 63 mm height for the TFV12 Prince.

Battery life follows consumption. At high wattage the cells drain faster, and a dual-battery mod means charging or swapping both cells together so that they stay matched.

A 2 ml tank also empties faster at 80 W than at 40 W. Refills multiply through the day, which matters as much as weight for anyone vaping away from home.

Before moving to a high wattage vape, a checklist

Moving to a powerful mod is worth preparing. Five checks head off a lot of unpleasant surprises.

Know the continuous discharge rating of your cells, read from the cell maker’s datasheet.
Get an external charger and a rigid carry case.
Choose coils whose recommended range matches the wattage you are after.
Plan for an e-liquid made for direct-lung vaping, usually high in VG.
Budget for more bottles and more coils than with a compact kit, bearing in mind that nicotine e-liquid is sold in 10 ml bottles in the UK.

FAQ

The questions below add to the figures set out above.

What is the difference between an 18650 and a 21700 battery?

The numbers describe the size, 18 mm across and 65 mm long for the first, 21 mm and 70 mm for the second. The larger cell holds more active material, so generally more capacity. A mod only takes the format its maker designed it for.

Can you charge the batteries inside the mod?

If the mod has a USB-C port, yes. An external charger is still useful for checking each cell separately and rotating with a second set that is already charged.

What wattage should a high wattage vape be set to?

The coil’s wattage, not the mod’s. Every coil carries a range recommended by its maker, and it is best to start at the bottom of that range before working up.

Do two batteries give twice the battery life?

At the same wattage, the stored energy roughly doubles, since each cell only supplies half the load. The real gain depends on the condition and matching of the two cells.

Does a powerful mod suit mouth-to-lung vaping?

A regulated mod often goes low enough for it. Size and weight still belong to a device designed for direct-lung vaping, and a compact kit does the same job more simply.

Choosing a high wattage vape by its real figures

A high wattage vape should be judged on the wattage its coils actually need, on the current its batteries must supply and on the e-liquid it will get through. The 200 W ceiling is headroom, the rating of your cells is a limit.

Reading those figures in that order works for all direct-lung kit, from the sub-ohm tank to the RDA, where power is always chosen with its cost in mind.

More clouds

La Voluterie writes for adults only. Most vaping products contain nicotine, an addictive substance, and nicotine vaping products may not be sold to anyone under 18 in the UK. This is editorial content, not advice to buy anything.