1 FINISHESBrand
EF420
EF420 is a hardware brand on our shelf: the Vertex is a 510-thread battery, not a vape you fill. It contains no nicotine, no e-liquid, and no cannabis — whatever you screw onto it is a separate purchase, and not one you can make here.
1 product on our shelf
The range
What we stock from EF420
1 FINISHESWhat the Vertex is
Our product data lists it as a slim 1100mAh 510-thread battery for concentrate and oil cartridges, with adjustable voltage and a preheat setting, charging over USB. The box holds the battery and a USB charger. It's a power supply with a standard fitting — nothing about it holds or heats a cartridge's contents on its own.
It contains no nicotine, no e-liquid, and no cannabis. The legal status of whatever you use with it varies by state, and confirming the law where you live is your responsibility.
Voltage and preheat, briefly
Adjustable voltage sets how hard the battery drives a cartridge's coil, and therefore how hot it runs — hotter gives bigger, warmer draws and burns through a cartridge faster; cooler gives more detail and lasts longer. Start low and step up only if the draw is too small. Preheat is a low-power pulse for thick or cold oil that won't move; it's a fix for a symptom, not a step in normal use.
EF420 questions
The things people ask support before ordering from this brand.
Does the EF420 Vertex contain nicotine or cannabis?
Neither. It's a battery — a 1100mAh power supply with a 510 thread. Whatever the cartridge holds is a separate purchase, and not one you can make here.
What voltage should I run?
Start low and step up only if the draw is too small. A harsh or burnt taste means you're above what that coil wants, so dial it back rather than pushing through. Preheat is only for thick or cold oil that won't draw.
Will my cartridge fit?
Electrically, yes — that's what a 510 thread guarantees. Whether a very wide cartridge looks oversized on a slim pen body is a separate, physical question.