The core task of current hardware manufacturers is to strike a balance between oil intake speed and atomization speed while preventing oil leakage and core burnout. The decisive components are the oil inlet holes and ceramic cores, with key parameters including the diameter of oil inlet holes, resistance value of ceramic cores and output voltage of batteries.

"If there’s not enough oil feeding the ceramic fast enough, the surface overheats — just like food burning on a pan with no cooking oil."

Oil inlet holes control the speed of oil flowing into the ceramic core. A larger hole diameter accelerates oil intake, yet raises the risk of oil leakage.

The core parameter of ceramic cores is resistance value, which is fixed by most manufacturers currently. Lower resistance brings higher overall power, and higher resistance results in lower power.

The third factor is battery output voltage, the most common parameter adjusted according to customers’ e-liquid. Voltage is directly proportional to power and directly determines power output.

DC Power Calculation Formula

P: Power (Unit: Watt, W)
U: Voltage (Unit: Volt, V)
R: Resistance (Unit: Ohm, Ω)
P=U²/R

Common Causes of Burnt Taste in Products

1. Too low heating wire resistance leads to excessive instantaneous power; insufficient oil supply fails to match atomization volume, causing dry burning.
2. Excessively high voltage makes oil intake unable to keep up with atomization efficiency of ceramic heating wires, resulting in dry burning.
3. Untreated silica gel on heating wires releases silicone oil at high temperatures, which infiltrates and clogs the micropores of heating wires.
4. Mismatch between cannabis oil formulations and operating voltages causes burnt flavor, a quite prevalent issue at present.
5. Sweat from assembly workers adheres to heating wires during manual assembly.
6. Excessive power-on testing before delivery triggers dry burning of heating wires.
7. Low temperature during oil filling and insufficient standing time prevent e-liquid from fully soaking the heating wires, which happens frequently nowadays.
8. Improper formula of ceramic heating wires leads to low porosity, making oil intake slower than atomization speed. This issue is rare now thanks to mature manufacturing technology.

Most burnt tastes are not caused by the ceramic itself “burning.”

It’s usually caused by oil starvation — when the ceramic can’t stay saturated fast enough, certain areas overheat and start carbonizing leftover oil residue.

We’ve been testing a ceramic architecture that remains surprisingly stable even under near-dry conditions.Instead of producing the typical burnt taste when oil runs low, it maintains a much cleaner flavor profile than conventional ceramic cores.

One interesting thing we noticed during testing is that even after most of the oil was depleted, the core didn’t generate the harsh carbonized flavor typically associated with dry hits.

Still trying to understand whether the difference comes from thermal distribution, saturation consistency, or both.