Open System – What is it in Vaping?
Definition
An Open System is a refillable, reusable vaping device that allows users to manually fill the tank or pod with any compatible e-liquid. Unlike closed pod systems that use pre-sealed cartridges, open systems feature removable coils, adjustable airflow and interchangeable components, giving vapers complete control over flavour, nicotine strength and vapour production. Designed for customisation and cost-efficiency, open tanks, box mods and rebuildable atomisers fall under this category, making them the preferred choice for Australian enthusiasts seeking versatility and long-term savings.
Technical Details
Open systems consist of four core parts: a rechargeable battery (internal or external 18650/21700 cells), a tank or pod with 2–8 ml capacity, a replaceable OCC coil (0.1–1.8 Ω) made from Kanthal, stainless steel or mesh, and a 510-threaded connection. E-liquid is drawn through organic-cotton wicking ports, vapourised by the coil and inhaled via an adjustable airflow ring. Output is regulated by a chipset that supports variable wattage (5–230 W), temperature control and OLED screen read-outs. Sub-ohm (< 1 Ω) builds create dense clouds, while higher-ohm coils mimic cigarette draw. Most devices include overheating protection, short-circuit cut-off and low-resistance lock to meet Australian safety standards.
Common Variations
- Pen-style open kits – slim, discreet, 18 mm diameter
- Pod-mod hybrids – magnetic 4 ml pods with replaceable coils
- Rebuildable dripping atomisers (RDAs) – user-installed coils, no tank reservoir
Usage & Tips
Prime a new coil by drippinglining the cotton with e-liquid and waiting five minutes before first fire; this prevents dry hits. Fill the tank to 80 % capacity to leave vacuum space and avoid leakage. Clean the 510 contact pin weekly with isopropyl alcohol to maintain accurate ohm reading on your OLED screen. If the mod displays “Ohms Too Low” or activates overheating protection, check that the coil is screwed in firmly and that the centre pin is not depressed. Always turn the device off or lock the fire key when carrying it in a pocket or bag to prevent accidental firing.
History & Context
Open-system vaping emerged in 2010 when Australian v
Open-system vaping emerged in 2010 when Australian vapers began modifying flashlight tubes and CE4 clearomisers to achieve better flavour and bigger clouds. The introduction of replaceable OCC coils, temperature control chips and OLED screens transformed open systems into the high-performance devices now sold in specialty vape stores nationwide, forming the backbone of Australia’s vaping community.