What is an Ohm?
Ohms law refers to the current of an electronic device, in this case the atomizer. Ohm’s law divides the voltage difference by the current. For vapers this comes into play for creating a thicker, more intense vapor utilizing a lower resistance atomizer. You will get a more warm, throaty vapor with a lower Ohm. You will also notice that your battery and eJuice run out a bit more quickly.
Is Sub-Ohm Vaping Dangerous?
The first thing to be clear about is that sub-ohm vaping can be dangerous if you aren’t paying too much attention to your battery. As you drop lower in Ohms following Ohm’s and Joule’s Law of electricity, the battery will increase power output. It is imperative that you don’t exceed the amperage limit of your battery or it could lead to explosion or fire.
Why Vape Below Zero or Sub-Ohm?
Basically the draw is a heavier and the produced vapor is thicker than usual. Sub-Ohm vapers generally take hits straight to their lungs allowing them to draw the large amount of vapor emitted from their negative Ohm atomizer tanks. In general Sub-Ohm vaping works best with more vegetable glycerin than propylene glycol because it leads to a less throat burning draw. Additionally they also use less nicotine in Sub-Ohm mods because you’re simply getting more.
What Do I Need to Start?
As far as a mod for Sub-Ohm vaporizing you should get a higher powered battery than you would with a 1Ohm piece. A lot of vapers prefer to use a variable voltage or wattage battery, but with newer technology compared to when Sub-Ohm first started you can simply just get a stronger wattage battery. Get yourself a IMR or hybrid lithium batteries from a reputable brand; avoid getting Li-Ion, Lipo or ICR battery types to avoid risk of spontaneous battery explosions.
Be absolutely sure that your mod is vented, it is very important that you never use an unvented mod to Sub-Ohm vape, it will greatly increase the risk of flames. Voltage drop is also key in this style of ecig vaping, you want yours to be quite low. Voltage drop is the amount of voltage lost when the battery sends a current through your mod to your coil. You need a low voltage drop for adequate Sub-Ohm vaping; avoid multiple piece tubes, telescoping tubes, threaded contacts or spring loaded. Those styles have a higher voltage drop, atomizers that have the lowest voltage drop are single piece tube, fixed position contacts and magnetic switch.
How Do I Care for My Sub-Ohm Mod?
It is important to keep your mod quite clean. Clean all threads, vents, switch and contacts thoroughly and as often as possible. If your switch is spring loaded take note frequently on how worn out the spring has gotten. However if possible try not to use spring loaded at all because it will wear out quickly and/or fail.
Sub-Ohm vaping will definitely drain your battery more quickly, keep some extra batteries around to avoid having to charge in your car or have no eCig at all. Never, ever expose your battery to extreme temperatures or water, if you do so stop using the device immediately.