Geekvape Zeus Sub Ohm tank review, judged on the evidence

The Geekvape Zeus Sub Ohm tank is still listed by retailers, often on product pages that look very much alike. Geekvape itself now sells it under a longer name, “Z Zeus Sub-ohm tank”. Between the official listing and the retailer pages, the figures do not always agree. Before judging the tank, it pays to separate what is established from what has simply been copied.

Geekvape Zeus Sub Ohm tank, what it is still worth

The Geekvape Zeus Sub Ohm tank remains a coherent choice for high-wattage direct-lung vaping, on one condition, a regulated mod that can hold 60 to 80 W without strain. Its top airflow and leak-resistant design make sense on paper, and the Z coil platform is still on sale.

Its weak points lie elsewhere, in scattered documentation and in a 5 ml standard capacity that is not the version a UK buyer should receive. This review is not based on hands-on use. It sets Geekvape’s own listing against two French retailer pages.

Geekvape’s listing, the basis of this review

The manufacturer’s online store gives a fairly short set of specifications. It is the only source that carries real weight, and everything else has to be read against it.

Size, capacity and connections

Geekvape lists a 26 mm diameter and a height of 42.5 mm without the drip tip, an 810 drip tip and top filling. Capacity is given as three figures, 5 ml, 3.5 ml and 2 ml for the TPD version, the first fitted from the factory and the other two supplied as a replacement glass.

Two retailer listings, Kumulus Vape and Vaplova, agree on the diameter, the height, the 810 drip tip and the 510 connection. They also give a weight of about 66 g, a figure missing from the manufacturer’s page.

Two Mesh Z coils in the box

The kit holds a Mesh Z2 coil of 0.2 ohm, rated between 70 and 80 W and fitted from the factory, plus a Mesh Z1 of 0.4 ohm, rated between 60 and 70 W. Kumulus Vape repeats both ranges exactly.

The box also contains a coil tool, a bag of spare parts and the user manual. At the foot of its listing, Geekvape adds that old and new versions ship at random, without saying what separates them.

The Zeus Sub Ohm tank needs a serious mod

The “sub ohm” label is not a slogan, it is a hardware requirement. A 0.2 ohm coil set to 80 W takes 4 V and a current of 20 A, according to the most basic laws of electricity.

With the 0.4 ohm Mesh Z1 at 70 W, the voltage rises to about 5.3 V and the current falls to 13.2 A. These values explain why the Geekvape Zeus Sub Ohm tank belongs on a high-power regulated mod, and why battery choice is a matter for the mod’s manual and the cell maker’s data sheet, not for the tank. The reasoning is set out in our piece on the coil calculator.

A small 40 W device is not built for it. In a reply published under its listing, Kumulus Vape mentions possible liquid spitting at 35 W and suggests setting the power to around 50 W at least.

Top airflow, the idea behind the range’s reputation

Geekvape describes air entering at the top, travelling down to the coil and rising back to the drip tip. The principle aims to limit leaks, since no air inlet sits below the liquid line.

The manufacturer refers to a leak-proof function and a redesigned fill port meant to reduce spills. Kumulus Vape is more cautious, presenting the top airflow as reassuring after a refill without describing any specific mechanism.

The listings say nothing, however, about how that air path feels on the draw. None of the sources consulted documents it, so it is worth trying in a shop before buying.

Z coils, a platform still on sale

The best news about the Zeus Sub Ohm tank lies in its consumable. Z coils fit several of the brand’s tanks, which keeps them in the catalogue long after this model’s launch.

Vaplova lists, alongside the Z1 and Z2, Z XM coils of 0.15 ohm and 0.4 ohm as compatible. Our review of the Geekvape Z coil range looks closely at what this shared platform is worth and where its exceptions lie.

Changing the coil means unscrewing the base under the glass, according to Kumulus Vape and Vaplova. Geekvape speaks of a “quick slide” system, and the retailers do not agree on whether the coil itself screws in or pushes in. The safest course is to follow the manual in the box.

Where the listings disagree

Comparing the pages brings a few surprises. They concern details, but those details decide a purchase or a repair.

The spare glass and the UK capacity

Geekvape lists a spare glass of 3.5 ml or 2 ml for the TPD version. Vaplova repeats the 3.5 ml, while Kumulus Vape mentions a 4 ml glass in one part of its listing. The gap may come from another revision of the product, since Geekvape says it ships the old and new versions interchangeably.

That leaves the TPD version, which the manufacturer lists and the two pages consulted do not detail, yet it is the one that matters here. Under the UK’s Tobacco and Related Products Regulations 2016, refillable tanks are limited to 2 ml, and nicotine e-liquid to 20 mg/ml in bottles of no more than 10 ml. The 5 ml figure describes the standard version of the Zeus Sub Ohm tank, not the one sold in the UK.

The recommended glycerine ratio

Kumulus Vape recommends an e-liquid close to 70% vegetable glycerine and advises against 50/50, which it considers too thin for this draw. Vaplova asks for at least 50% glycerine and presents 50/50 as a versatile option.

The two pieces of advice are not incompatible, they reflect two different tolerances to leaking. For a first fill, the higher-glycerine recommendation is the more cautious one.

FAQ

Five questions the Zeus Sub Ohm tank listing usually leaves without a clear answer.

What is the difference between the Zeus Sub Ohm tank and the Zeus RTA?

The Zeus RTA is a rebuildable atomiser, where you fit your own wire and cotton. The Zeus Sub Ohm tank keeps the name and the top airflow but runs on ready-made coils.

What does KA1 mean on the listing?

KA1 refers to Kanthal A1, an iron, chromium and aluminium alloy used here for the mesh of the Mesh Z coils. It is driven in wattage mode and is not designed for temperature control.

How can I avoid a short circuit message after a coil change?

Check that the base is screwed back on without force and that the centre pin is clean. A message that persists points to the new coil or to the connector, as our analysis of the coil shorted message explains.

Which mod suits the Zeus Sub Ohm tank?

A regulated mod able to deliver at least 80 W for the Mesh Z2, with a top plate of at least 26 mm so the tank does not overhang. Cell choice then follows the mod’s manual, since the Mesh Z2 at 80 W asks the electronics for 20 A.

How can you tell the old version from the new one?

Geekvape says it ships both at random and does not publish what separates them. The manual and the box you receive are therefore the only reference, especially for the glass capacity and how the coil is fitted.

Geekvape Zeus Sub Ohm tank, our reasoned verdict

The Geekvape Zeus Sub Ohm tank still deserves attention for what it does best, a high-wattage direct-lung draw with airflow designed against leaks and coils that remain available. In return it asks for a sturdy mod and a high-glycerine e-liquid.

Before buying, three checks come first, the 2 ml glass required in the UK, the real output of the mod and the exact coil reference. A tank is judged on its spec sheet as much as on its draw, and the Geekvape Zeus Sub Ohm tank makes that point better than much of the hardware reviewed on this site.

Further reading

• Geekvape Z coils, the range put under scrutiny
• Coil calculator, the right number but not the proof
• Coil shorted, the one error message that reassures

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.