Vaporesso GTX Go 40, reading the spec sheet properly

The Vaporesso GTX Go 40 looks like a kit you can size up at a glance, a 22 mm tube, one button and a magnetic pod. Retailer listings still disagree on how much liquid the pod holds, which coils it takes and how much power it really delivers. This guide sets those listings against each other and works through the sums that nobody seems to publish.

Vaporesso GTX Go 40, an automatic 40 W pen style kit

The Vaporesso GTX Go 40 is a tube shaped kit built around a 1500 mAh internal battery and a maximum output of 40 W. It takes the GTX Pod 22 and the coils of the GTX platform, which the brand shares with other devices in its range. There is no screen and no manual wattage control.

The idea fits in one sentence, the device reads the resistance of the coil fitted and sets the power itself. Several retailers describe that automatic behaviour in the same terms, and it places the kit among the easiest devices to pick up, alongside the flatter small vape kits covered elsewhere on this site.

The figures that maker and retailers agree on

Part of the spec sheet raises no questions at all. The values below appear on Vaporesso’s product page or, for the dimensions, on at least two retailer listings giving the same figure.

Specification	Value
Battery	internal, 1500 mAh
Maximum output	40 W
Output voltage	0 to 4 V
Dimensions	110.3 mm long, 22 mm across
Pod	GTX Pod 22, 2 ml TPD version
Coil supplied	GTX Mesh 0.6 ohm, 20 to 30 W
Resistance range	0.1 to 2 ohms
Charging	USB-C, 5 V and 1 A

The box holds the battery, a pod, the 0.6 ohm coil, a USB-C cable, the manual and a warranty card. Weight is another matter, as it changes from one listing to the next, sometimes within the same page, so it is left out here.

Automatic wattage, what the 40 W figure really means

The 40 W figure is a ceiling, not a value every coil reaches. Two numbers from the table are enough to check this, the 4 V maximum output and the resistance of the coil fitted.

Ohm’s law applied to the GTX Go 40

The power a coil receives equals the square of the voltage divided by its resistance. At 4 V at most, a 0.6 ohm coil gets no more than 16 divided by 0.6, which is roughly 26.7 W. Reaching 40 W at 4 V needs a coil of 0.4 ohm or lower.

What the sum means for the coil in the box

The 0.6 ohm coil supplied is rated for 20 to 30 W. On that calculation, the top of its range is out of reach, which matches a retailer listing that rates it at 20 to 26 W. Only the lowest values in the GTX line, such as the 0.3 ohm, let the device hit its 40 W ceiling.

The calculation stays theoretical. It does not reveal the exact wattage the chipset picks for each coil, a figure the brand does not publish.

Which coils fit the Vaporesso GTX Go 40

This is the most confusing part of any listing. The maker and the retailers do not say the same thing about compatible coils, and a hurried buyer can end up ordering one that does not suit the kit.

Broad compatibility on paper

On paper, the GTX platform accepts the whole GTX coil range, including the rebuildable RBA deck, with a note from the maker specifying the triple silicone version of those coils. The 0.1 to 2 ohm range covers every common value.

Three different lists from retailers

Retailer listings give three different versions. One limits the kit to GTX 2 coils only and rules out the 0.2 and 1.2 ohm. Another accepts GTX coils above 0.3 ohm and suggests the 0.8 or 1.2 ohm for a tighter draw. A third simply lists the 0.3, 0.6, 0.8 and 1.2 ohm.

The 0.2 ohm, the one exclusion that holds up

Only one exclusion rests on a solid number. The 0.2 ohm GTX Mesh coil, supplied with the GTX Go 80, is rated for 45 to 60 W, beyond the 40 W the GTX Go 40 can deliver. For the 1.2 ohm, nothing in the brand’s documentation supports ruling it out, and the choice depends on the draw you want, a higher value going with a tighter mouth-to-lung inhale.

Pod capacity and the UK rules

Many international listings for the Vaporesso GTX Go 40 quote a 3.5 ml pod and mention no other version. In the UK, refillable tanks and pods are limited to 2 ml, and nicotine e-liquid to 20 mg/ml in bottles of up to 10 ml. The GTX Pod 22 exists in two versions, 3.5 ml as standard and 2 ml as the TPD version, which is the one sold here.

The UK version also shows up in the MHRA register of notified products. Entry 01110-21-10006, submitted by Shenzhen Smoore Technology Limited and published on 28 January 2022, lists the GTX GO 40 in black, matte grey, rainbow, blue and red, each marked 2 ml. Checking the capacity on the packaging remains the simplest test before ordering.

GTX Go 40 or GTX Go 80, what separates the two tubes

The two kits share a name and a product page. They still have neither the battery, nor the pod, nor the original coil in common.

Comparison point	GTX Go 40	GTX Go 80
Battery	1500 mAh	3000 mAh
Maximum output	40 W	80 W
Pod	GTX Pod 22	GTX Pod 26
Standard, then TPD capacity	3.5 ml, then 2 ml	5 ml, then 2 ml
Coil supplied	0.6 ohm, 20 to 30 W	0.2 ohm, 45 to 60 W
Charging	5 V and 1 A	5 V and 2 A

Doubling the battery comes with 2 A charging instead of 1 A. On paper, the current doubles along with the capacity, so charging time stays in the same range on both models. The GTX Go 80 aims at a looser draw with its 0.2 ohm, while the GTX Go 40 sits in the mid power range.

Handling, one button and a three colour light

On a device without a screen, the light and the button carry all the information. Published user manuals and several retailers describe them in the same way.

The light around the button shows the battery level, green from 70 to 100 per cent, blue from 30 to 69 per cent and red below 30 per cent, the signal that a recharge is due. Any puff longer than 10 seconds is cut off by the chipset, a safety cut-out that two manuals describe in identical terms.

The pod sits on the battery by magnets, and airflow is adjusted by turning it. Filling is from the top, after unscrewing the top cap. A nicotine-free liquid works in it exactly the same way as a nicotine one.

FAQ

These questions come up regularly in searches about the kit and add to the points covered above.

How many clicks turn the GTX Go 40 on?

Five quick presses on the button switch the device on, and five more switch it off. The same button then fires the coil, with no other step needed.

How long does the GTX Go 40 take to charge?

Two sources agree on roughly an hour for a full charge from empty. Actual time depends on the USB source used and on the starting level.

Why is my GTX Go 40 leaking?

The pod has an anti-leak design and fills from the top, but leaks can still happen. They usually come from a coil that is not pushed fully home, a top cap that is not screwed down properly or a liquid too thin for the coil fitted.

How do you change the coil on a GTX Go 40?

Lift the pod off its magnetic base, pull out the old coil, push in the new one, refit the pod and fill it. Letting the cotton soak for about ten minutes before vaping avoids firing a wick that is still dry.

Which coil suits the Vaporesso GTX Go 80?

The GTX Go 80 comes with the 0.2 ohm GTX Mesh. With the same 4 V maximum, that value matches its 80 W exactly, since 16 divided by 0.2 gives 80. Other GTX coils fit it too, for a tighter draw.

Vaporesso GTX Go 40, three checks before buying

The Vaporesso GTX Go 40 is not a complicated device. Its listings are what make it confusing, between a 3.5 ml figure that does not match the UK version, coil lists that contradict each other and a 40 W rating the original coil cannot reach.

Before buying a Vaporesso GTX Go 40, three checks are enough, the 2 ml capacity on the box, the pod name (GTX Pod 22) and the value of the coils you order, leaving the 0.2 ohm aside. The same careful reading works for other ranges, such as the Geekvape Sonder family, where generations get mixed up just as easily.

Further reading

• Geekvape Sonder, what retailer listings tend to mix up
• Dotmod range explained, from dotPod to dotBox
• Small vape, choosing a genuinely discreet kit

Editorial content for adult readers only. Nicotine is a highly addictive substance, and nicotine vaping products are not for sale to anyone under 18 in the UK. This article is not a buying recommendation.