# Voopoo Argus e-liquid, which bottle suits each cartridge > Which e-liquid suits a Voopoo Argus, nicotine ceilings per coil value against the UK 20 mg/ml cap, PG/VG ratio, nic salts or freebase, 2 ml filling. On shop pages, a **Voopoo Argus** is sold on its battery, its screen and its wattage. The bottle hardly gets a mention, even though the range runs on several cartridges that do not take quite the same liquid. A label that works on one coil value can give a harsh hit on another. Before filling up, it pays to know which cartridge you are holding and what the manufacturer says about it, figures included. ## Which e-liquid suits a Voopoo Argus? In a **Voopoo Argus**, the bottle is chosen by the coil value in use, not by the device model. Voopoo publishes a nicotine ceiling for each value of its Multi-Ohm cartridge, accepts both nic salts and freebase nicotine, and gives no PG/VG ratio at all. In the UK, the ceiling that counts is the one on the label, 20 mg/ml at most for any nicotine e-liquid. On the 1.0 and 0.7 ohm values, built mainly for mouth-to-lung vaping, a thin liquid in nic salts or freebase suits well. The 0.4 ohm value, which runs hotter, is better matched to freebase and a lower strength. Everything else, from flavour to tank capacity and the way you fill, is sorted out afterwards, cartridge in hand. ## Identify your Argus cartridge before opening the bottle The Argus family covers more than thirty devices, but the liquid only deals with the cartridge. Voopoo lists several generations on its site, including the Multi-Ohm, the Snap and the Top Fill cartridges, and each one brings its own values. ### The Multi-Ohm, three values in one body Launched with the Argus G4 and G4 Mini in spring 2026, the Multi-Ohm cartridge combines 0.4, 0.7 and 1.0 ohm in a top-fill PCTG body. According to the manufacturer's page, the 0.4 ohm value can only be switched on with the G4 and some later products. The G4 Mini and Z3 pages only describe switching between 0.7 and 1.0 ohm, shown by a white or blue light for 0.7 and a green light for 1.0. For the bottle, this means a single fill may move from one value to another without being emptied. Whatever you pour in has to work on every value the device lets you use. ### The Top Fill V2, one value per cartridge The Argus G3, G3 Mini, Klyc and Matrix use the Top Fill V2 cartridge, sold with a fixed coil. The G3 page lists 10 to 14 W for the 1.0 ohm, 14 to 18 W for the 0.7 ohm and 18 to 30 W for the 0.4 ohm. Here, one cartridge means one liquid, which keeps the choice simple. ## Nicotine strength, Voopoo's ceilings and the UK limit Strength is the first thing to read on the front label, and it is where the manufacturer's international pages can confuse. Their figures do not match what is sold in the UK. ### What Voopoo publishes for each value For the Multi-Ohm, the official page states "Nicotine ≤ 50 mg" at 1.0 ohm, "≤ 30 mg" at 0.7 ohm and "≤ 20 mg" at 0.4 ohm, nic salts or freebase. The G3's Top Fill V2 shows a single ceiling of 50 mg. The logic holds up, since a lower value vaporises more liquid with every puff. ### What a UK bottle allows UK rules cap nicotine e-liquid at 20 mg/ml, sold in refill bottles of no more than 10 ml. No bottle on the UK market matches the 50 and 30 mg ceilings the manufacturer lists, and only the 0.4 ohm figure lines up with the legal limit. Choosing a strength below that cap is up to each vaper. The same figure does feel stronger at 0.4 ohm than at 1.0 ohm, though, because more liquid is vaporised. ## Voopoo Argus PG/VG ratio, what the label should show None of the Voopoo pages consulted recommends a ratio for its Argus cartridges. The choice therefore rests on how small pod coils behave, and on reading the label, which our guide to [choosing vape liquid by reading the bottle](/uk/vape-liquid-label-guide/) walks through line by line. ### The 1.0 and 0.7 ohm values, a thin liquid At low wattage, the wick in a pod cartridge takes its time to soak back up. A thin liquid, around 50/50 (a common pod guideline that Voopoo does not publish), spreads through it easily, while a blend heavy in vegetable glycerine may leave the cotton short at the end of a puff and taste dry. ### The 0.4 ohm value, a little more VG On the G4, whose output goes up to 35 W, the 0.4 ohm value heats more liquid. A slightly richer ratio, such as 40/60, again a general guideline rather than a manufacturer instruction, gives more vapour without flooding the cartridge, provided the cotton is left to soak before the first puff. ## Nic salts or freebase depending on the coil Voopoo's pages accept both forms of nicotine on every value. The launch press release for the G4 and G4 Mini, issued at the end of May 2026, still sums up the brand's thinking in one line, "salts love higher ohms, freebase shines lower". Read against the bottle, that line points nic salts towards the 1.0 and 0.7 ohm values, where their smoother throat hit works well at low wattage. Freebase finds its place on the 0.4 ohm, where a lower strength usually does the job. The nicotine form appears on the front label or in the product name, often as "nic salt" or "salt nic". ## Filling a 2 ml Voopoo Argus cartridge Once the bottle is chosen, filling is the last step, and the small capacity makes it fiddlier than it looks. Every cartridge mentioned here fills from the top. Voopoo publishes two capacities for the Multi-Ohm, 3.5 ml in its standard and US versions and 2 ml in its TPD version. UK rules cap refillable tanks and cartridges at 2 ml, so the TPD version is the one on UK shelves. A listing that quotes 3.5 ml is repeating figures from another market. With a cartridge this small, the narrow nozzle of a 10 ml bottle slides into the fill port more easily with the cartridge tilted slightly. It is best to stop short of the rim, close the cap and wait a few minutes while the cotton takes up the liquid. ## Sweet flavours and the cartridge's claimed lifespan Flavour does not change compatibility, but it does weigh on how long the coil lasts. A very sweet recipe usually gunks up the wick faster than a light fruit or a menthol. Voopoo links its "Golden Cotton" to a claimed endurance of 100 ml of liquid. That manufacturer figure is a guide only, and a sugar-heavy liquid tends to shorten it. A caramelised taste that carries from one puff to the next means the cartridge needs replacing. An opened bottle keeps better away from light and heat, as our guide on [how to store e-liquid](/uk/how-to-store-e-liquid/) explains. ## FAQ These five questions come up when getting a bottle ready for an Argus. The answers stick to the manufacturer's pages and to what the label lets you check. ### How does a Voopoo Argus work? The built-in battery heats the coil inside the cartridge, and the cotton around it, soaked in e-liquid, releases the vapour. Depending on the model, the chosen value shows on a screen or through a coloured light, and the cartridge comes out for filling. ### Can the G4 Mini use the 0.4 ohm value? No. Voopoo keeps the 0.4 ohm value of the Multi-Ohm cartridge for the G4 and some later products, and the G4 Mini page only describes 0.7 and 1.0 ohm. For a G4 Mini, only the guidance for 0.7 and 1.0 ohm applies to the bottle. ### Does a shortfill topped up with nic shots suit an Argus? Yes, as long as you check the strength and ratio of the final blend. Our guide to [100ml e-liquid and nic shots](/uk/100ml-e-liquid-nicotine-shots/) sets out the maths, which holds just as well for a small pod cartridge. ### Can I switch bottles without changing the cartridge? You can, but the old flavour stays in the cotton for several fills. Going from a dessert to a menthol gives a mix of tastes until the wick has been replaced. ### Why does the cartridge gurgle after filling? Gurgling usually means excess liquid in the chimney, often after filling to the brim or using a liquid too thin for the value in use. Taking the cartridge out, blowing gently through the mouthpiece into a tissue and filling a little less usually sorts it out. ## Voopoo Argus, read the cartridge before the bottle For a **Voopoo Argus**, start with the cartridge and the value in use, move on to the strength under the UK cap of 20 mg/ml, and finish with the nicotine form and the ratio. The 50 and 30 mg ceilings Voopoo publishes sit above the UK limit and match no bottle sold here. The same habit applies to any refillable pod. With a **Voopoo Argus**, a label read against the cartridge heads off most harsh hits and gurgles before the very first puff. ## On the same shelf - [Choosing vape liquid by reading the bottle](/uk/vape-liquid-label-guide/) - [100ml e-liquid and nic shots, the maths the bottle allows](/uk/100ml-e-liquid-nicotine-shots/) - [How to store e-liquid, bottle by bottle](/uk/how-to-store-e-liquid/) La Fiole Bleue publishes editorial content for adult readers only. Vaping products can contain nicotine, which is a highly addictive substance. Vaping products are not for sale to anyone under 18 in the UK. This article describes bottles and is not a buying recommendation.