BCC vaporisers: Bottom coil clearomisers at a glance

A BCC atomiser is a clearomiser in which the coil is positioned at the bottom of the tank. The term ‘clearomiser’ refers to a transparent tank with a visible e-liquid level, whilst ‘bottom coil’ refers to the position of the heating coil. This is constantly supplied with e-liquid via wicks – usually made of organic cotton – because the coil sits directly in the e-liquid reservoir.

A BCC system typically comprises four components: the mouthpiece (drip tip), the glass or plastic tank, the replaceable coil unit with integrated wick, and the base with a 510 thread for the mod. The Bottom Coil Clearomizer can be distinguished from older top-coil variants (heating coil at the top) and from modern sub-ohm tanks, which also feature bottom-wound coils but operate at significantly lower resistances and higher power outputs.

E-liquid flows through the side openings of the coil unit onto the wick, where it is absorbed and vaporised by the heated coil. Because the coil is positioned at the bottom, it remains saturated even when the tank is nearly empty – dry hits are less common than with top-coil designs.

Typical applications

BCC vaporisers are primarily designed for mouth-to-lung (MTL) vaping. They typically operate with resistances between 1.2 and 2.0 ohms and power outputs of around 8 to 15 watts. The draw feels similar to a traditional cigarette and works well with nicotine-containing 10-ml e-liquids at 6 to 20 mg/ml – a common starting point for adults switching from tobacco cigarettes.

Difference from sub-ohm tanks

Sub-ohm vaporisers operate with resistances below 1.0 ohms and at 30 to 80 watts, producing dense clouds of vapour and are inhaled directly into the lungs. A BCC system is not designed for this: the smaller coils would overheat. Instead, the Bottom Coil Clearomizer scores highly for low e-liquid consumption (around 2–4 ml per day with normal use) and long battery life.

• Coil availability: Check whether suitable replacement coils for your model are consistently available. A BCC atomiser relies on regular coil changes (every 1–3 weeks, depending on usage).
• Resistance range: Pay attention to the coil’s recommended wattage. A 1.6-ohm coil performs differently from a 1.0-ohm one – both require a mod that regulates the range accurately.
• Tank material: Glass is flavour-neutral and resistant to aggressive flavours (e.g. menthol, cinnamon, citrus). Plastic tanks are more robust, but can become cloudy or crack with certain e-liquids.
• Airflow: An adjustable airflow control on the base allows you to switch between a tight MTL draw and a slightly more open draw. Fixed airflow settings are simpler but less flexible.
• Capacity and handling: Tank capacities of between 2 and 3 ml are standard. It is important that the tank can be opened and filled without tools.

Common mistakes: Firing up a new coil straight away without ‘priming’ it (apply a few drops of e-liquid to the wick and leave for 5–10 minutes), vaping the tank dry, or using too high a wattage. All three of these significantly shorten the coil’s lifespan.

How often do I need to change the coil on the BCC vaporiser?

Usually every 1 to 3 weeks, depending on the e-liquid, power setting and frequency of use. Sweet or dark flavours (dessert, tobacco) shorten the lifespan, whilst clear, fruity or menthol e-liquids extend it.

Can I use any e-liquid in a BCC system?

In principle, yes, as long as it is suitable for MTL. A PG/VG ratio of 50/50 to 60/40 works best. E-liquids with a very high VG content (over 70% VG) are too thick and cannot sufficiently saturate the wicks.

How can I tell that the coil is worn out?

Typical signs include a burnt taste, significantly less vapour, gurgling noises or e-liquid leaking from the base. At this point, at the latest, the coil needs changing.

Is a BCC atomiser suitable for beginners?

Yes, precisely because of its ease of use, low power output and low e-liquid consumption. Anyone looking for a straightforward setup with a classic draw will be well served by a BCC system.

The BCC vaporiser remains a solid solution for anyone wanting a reliable MTL setup with manageable maintenance. The key factors are suitable coils, clean filling and moderate power. In our selection of vaporisers, you’ll find both classic bottom coil clearomisers and more modern alternatives – take your time to compare and choose the system that suits your vaping style. Suitable replacement heads are available in the coils section.