What's Actually Inside a Disposable Vape: Battery, Coil, Wick and Airflow
A disposable looks like a sealed plastic stick with nothing to understand. There are about seven things inside, and almost every complaint we field — burnt taste, thin vapour, a device that won't fire, one that spits — traces back to one of them. Here's the hardware in plain English. Don't pull one apart to look: there's a charged lithium cell inside.
The cell: one small lithium battery
Every vape we sell runs on a single lithium-ion cell. Battery University describes the standard construction — a metal-oxide positive electrode, a carbon or graphite negative electrode, an electrolyte carrying ions between them — and notes that li-ion cells require a mandatory protection circuit under IEC 62133 against current surges and pressure build-up. That protection is one reason a device sometimes just refuses to fire.
We deliberately don't lean on mAh figures here: some brands publish a capacity and some don't, and the number on its own tells you very little without knowing how hard the device draws on it. What matters is whether the cell can be topped up, because that decides whether battery or liquid runs out first. Otherwise treat it as you would any lithium battery you carry around — our battery safety and storage guide covers heat, damage and disposal.
The coil: the heating element
The coil is a piece of metal that gets hot when current runs through it, boiling a thin film of e-liquid off the wick into an aerosol. Nothing combusts, and everything you taste happens in the few millimetres around this part.
Mesh, briefly
Two shapes dominate: round wire wound into a spring, touching the cotton along a thin edge, and mesh — a flat perforated strip. As Vaporesso's explainer puts it, mesh gives a larger heating surface, so heat spreads evenly rather than concentrating in hot spots. That's the idea in one sentence; the full treatment is in mesh coils explained. We won't claim a given model uses a particular coil unless the brand states it.
The wick: cotton doing the work
Between the liquid and the coil sits a wick, almost always cotton — retailer guides such as Gourmet E-Liquid's wick buyer's guide note that organic cotton became the default because it absorbs quickly and holds saturation well. It works by capillary action, and its refill speed is the hidden limit on how hard you can chain-vape.
Fire the coil faster than the cotton resupplies it and you heat dry fibres — a dry hit, and repeated ones scorch the cotton permanently. It's the usual cause behind why does my vape taste burnt, and the reason a short pause between puffs helps.
The reservoir and the liquid half
The reservoir is a sealed pocket of e-liquid, usually cotton-packed rather than sloshing free, feeding the wick. Hardware sets how fast that liquid is consumed; the liquid sets how the hit feels. Disposables run nicotine salts rather than freebase, which is why they carry a high strength without a harsh throat hit — nic salts vs freebase is the direct companion to this piece.
Airflow and the draw sensor
There's no button on a disposable, so something has to notice you inhaling: a tiny pressure-sensitive microphone. Component explainers describe the standard part as a capacitive electret microphone paired with an ASIC chip — airflow deforms a conductive film, the gap to the electrode plate changes, capacitance changes, and the chip amplifies that into a fire signal. Microphone physics, listening for suction rather than sound.
The air path around it — inlet slots at the base, a chimney past the coil, out through the mouthpiece — sets the draw resistance. Tight is mouth-to-lung and cigarette-like; open is airier. You can't adjust it on a sealed device, so know your preference before buying: see MTL vs DTL. Blocked inlet slots — a device carried loose in a linty pocket — are a routine cause of "it won't fire".
The board, LED and seals
The chip that reads the sensor also handles the housekeeping: cutting power after a fixed time so a stuck sensor can't run on, overcurrent protection, and flashing the LED for low battery. A flashing light is information, not a fault. Around it all sit gaskets keeping liquid off the electronics, plus the mouthpiece — mostly ergonomics, but also where condensation collects.
Which part is causing your problem
| Component | What it does | Symptom when it's the problem | Where to read more |
| Lithium cell | Stores and supplies power | Weak puffs; dies with liquid left; won't wake after storage | Battery safety & storage |
| Coil | Heats liquid into aerosol | Muted flavour, low vapour, uneven performance | Mesh coils explained |
| Wick (cotton) | Feeds liquid to the coil | Burnt taste, worse when chain-vaping | Why it tastes burnt |
| Reservoir & liquid | Holds the e-liquid, sets nicotine feel | Harshness, flavour fade, running out early | Nic salts vs freebase |
| Airflow path & draw sensor | Detects the puff, sets draw tightness | Nothing on inhale; draw too tight or too airy | MTL vs DTL draw guide |
| Seals & mouthpiece | Keep liquid in, aerosol out | Spitting, gurgling, liquid on the lips | Leaking & spitting fixes |
| Control board & LED | Timing, protection, status light | Cut-off mid-puff, flashing light, refusal to fire | Quick fixes when it won't work |
How this maps to our range
The hardware split worth checking before you order is the charging port, because it decides how cell and tank are matched. IGET Bar (3500) and IGET Bar Pro (10000) have no charging port — use-and-recycle, cell sized to see out the liquid. IGET ONE 12000, GROO MAX and G.T. 3600 are USB-C rechargeable, so the liquid is what ends them. GODFATHER 9 15000 is a pod system: a reusable device with sealed pods you swap in, so the battery outlives many tanks. Everything we ship is 100% original stock, sent fast and discreetly Australia-wide, with free shipping on orders of 10 or more. Adults 21+ only.