Is 80 W Enough for a 0.2 Ω Mesh Coil?

Overview

Is 80W enough for sub ohm vaping with a 0.2 ohm mesh coil? Yes, as far as the numbers go: at 80 W a 0.2 ohm coil needs 4.0 V and 20 A (V = sqrt(P x R), I = P / V), and 80 W is above the 45 to 60 W range one reviewer gives for a Vaporesso 0.2 ohm mesh coil. Whether that holds for your coil depends on that coil’s own range, so the coil packaging and the device maker’s manual are the reference.

Wattage headroom means your kit’s maximum is higher than the power your coil is meant to run at. This page works through the voltage, the current and the battery that follows from them. It is written for adults aged 21 and over.

• Is 80W enough for sub ohm? The 0.2 ohm coil power range
• Voltage and current at 80 W
• What battery that needs
• Checking your kit’s limits
• Using the headroom
• Choosing an 80 W kit
• When 80 W is not enough

Is 80W enough for sub ohm? The 0.2 ohm coil power range

A coil is designed to run inside a power range, and the range is printed on the coil’s packaging or given by the maker. We could not verify a Voopoo or Vaporesso coil range on a maker’s own page for this article, so we do not quote one as the maker’s figure.

What we did read is a reviewer’s coil selection guide. It lists the Vaporesso GTX 0.2 ohm mesh coil at 45 to 60 W, with 55 W marked as the best setting. That is a media source, written by a reviewer at Planet of the Vapes, and it covers the GTX coil, not every 0.2 ohm coil.

Against that range, 80 W is well above the top of the coil’s window. On that reviewer’s figures, 80 W is the kit’s ceiling, and this coil would be set well below it.

For the wider picture on how resistance and power relate, read our vape coil resistance guide. If you want to know what happens when power is set too high for a coil, our page on coil wattage that is too high covers it.

What is mesh?

Mesh is a coil heating element made from a sheet of perforated metal, rather than a round wire wound into a spiral. It is a description of the element’s shape. We do not make performance claims for it here. For the coil-life question, see whether mesh coils last longer.

Voltage and current at 80 W

Two formulas give you the electrical numbers. Voltage is the square root of power times resistance, and current is power divided by voltage. Both come from basic electrical arithmetic, and you can check them on any calculator.

For 80 W across 0.2 ohm: V = sqrt(80 x 0.2) = sqrt(16) = 4.0 V. Then I = 80 / 4.0 = 20 A. The table repeats the arithmetic for other power settings, so you can see how much the numbers fall when you drop below the maximum.

Power (W)	Resistance (ohm)	Voltage (V)	Current (A)
40	0.2	2.83	14.1
45	0.2	3.00	15.0
55	0.2	3.32	16.6
60	0.2	3.46	17.3
65	0.2	3.61	18.0
80	0.2	4.00	20.0

All values assume an ideal 0.2 ohm coil and are rounded. A real coil’s resistance can differ a little, so treat the table as the arithmetic of the stated inputs.

Can I run 0.15 ohm at 80 W?

The arithmetic is V = sqrt(80 x 0.15) = 3.46 V and I = 80 / 3.46 = 23.1 A. That is more current than the 0.2 ohm case. Whether a given kit and battery allow it is a question for that kit’s manual, which states its supported resistance range and battery needs.

What battery that needs

The current figure matters because a battery has a maximum continuous discharge rating. At 20 A, the battery in your kit must be rated to supply at least 20 A. That is the minimum the arithmetic implies, not a recommendation to run at that limit.

We checked one maker’s manual to see how it handles this. The Voopoo Drag X2 manual lists a power range of 5 to 80 W and states “18650*1 (Excluded)”, so you supply your own 18650 battery. It adds: “It is recommended to use high-rate battery with discharge current ≥ 30 A.”

That recommendation sits 10 A above the 20 A we calculated. A margin like this is the reason to read the maker’s own figure instead of working only from the formula. Other kits can have built-in batteries or different advice, so use your own kit’s manual.

Is 20 A safe?

We cannot call any current level safe in general, because it depends on the battery, the device and how both are used. What we can say is to use only batteries your device’s maker recommends. The US FDA’s tips to help avoid vape battery fires or explosions say the same, and add not to mix brands, charge levels, or old and new batteries.

Checking your kit’s limits

Before you decide that 80 W is enough, check what the kit itself supports. Two lines in the manual do most of the work: the power range and the resistance range.

The Voopoo Drag X2 manual gives a power range of 5 to 80 W and a resistance range of 0.1 to 3.0 ohm. A 0.2 ohm coil sits inside that resistance range, and so does 0.15 ohm. We quote this as one example of how a manual reads, and not as a statement about any other kit.

The manual also carries a charging warning: it says to use a UL-certified USB charger for indoor charging, to avoid the danger of fire and explosion. Read the whole manual for your own device, since the supported coils and the battery advice differ between models.

If your kit uses coils that carry a recommended wattage on the packaging, that printed figure is the one to follow. Our 0.6 vs 0.8 ohm coil comparison shows how we compare coils by resistance in other ranges.

Using the headroom

Headroom is useful only if you set the power on purpose. These steps are general guidance, and the coil packaging and the device maker’s manual take priority over them.

1. Find the power range printed on your coil’s packaging or in its manual.
2. Set the kit’s power to the low end of that range first.
3. Change the setting in small steps, and stay inside the range.
4. If the taste is burnt or the vapour feels harsh, lower the power instead of raising it.
5. Keep your battery rating at or above the current your setting needs.

Our guides on why a vape tastes burnt and how long vape coils last go into what to check when a coil does not behave as expected.

Does a higher wattage kit run cooler?

Not by itself. The power your coil receives is the power you set, and the table shows the voltage and current that follow from it. A kit with a higher maximum gives you more room to choose, but at 55 W the arithmetic is the same on an 80 W kit as on a 60 W kit.

Choosing an 80 W kit

If you are shopping for a kit that tops out at 80 W, start from the coil you plan to use and work backwards. Check the coil’s range, then the kit’s maximum, then the battery.

We do not list specific kit prices or stock here, because both change. Instead, browse the vape kit category and open each product page for its listed power. For coils, see the coil category. If you prefer a lighter setup, the starter kit category has other options.

When you compare kits, put these items side by side:

• The kit’s maximum power in watts.
• The supported coil resistance range.
• Whether the battery is built in or supplied by you.
• The coil type the tank takes.

Delivery in Dubai takes about 2 hours between 10am and 11pm, and other emirates are covered within 24 hours. See the delivery terms for the rest.

When 80 W is not enough

For a single 0.2 ohm coil in the range above, 80 W is more than the coil’s window. It can still be too low for a different coil. Coils differ, and a coil with a higher recommended range could ask for more than 80 W.

We have no verified figure for dual-coil builds or for other coil series, so we do not state a number for them. If a coil’s packaging lists a range that reaches above 80 W, you need a kit with a higher maximum, and the battery needs to supply a higher current. Work it out with the same two formulas.

For example, 100 W across 0.2 ohm gives V = sqrt(100 x 0.2) = 4.47 V and I = 100 / 4.47 = 22.4 A. Run the numbers for your own coil before you buy a kit.

So, is 80W enough for sub ohm use with this coil? On the numbers above, 80 W is enough to cover the 0.2 ohm range quoted above, with room to spare. If your coil’s range is higher, or your kit’s battery cannot supply the current, it is not. Check the coil, the kit and the battery in that order, and follow the maker’s manual.