Your Brief Guide to Sub-Ohm Vaping


So, What Does Sub-Ohm Vaping Mean Exactly?

In the simplest terms, an “ohm” is a measurement of electrical resistance. Sub-ohm vaping means to use a vaping device in which the atomizer measures a resistance lesser than 1.0 ohm. A little rusty on your electrical engineering? Nothing to worry about. Just keep in mind that the lesser the resistance, the greater power output for a particular voltage.

Sub-ohm vaping has gained popularity because it offers advanced vapers the ability to generate more vapor or flavor. The atomizer in the tank is ultimately responsible for the resistance of a vaporizer, and you will find sub-ohm tanks coupled with compatible box mods and mechanical mods of all sorts.

How Does Sub-Ohm Vaping Work?

Every vaporizer needs a source of power. As of today, most box mods, mechanical mods, and e-cigarettes are powered by an battery, usually of the hybrid lithium variety. These powerful batteries feed energy to a coil in the atomizer. What happens when lots of energy is pointed in one place? Heat! And lots of it.

Just like the red, glowing elements of a toaster, the low resistance coils in an atomizer heat up as energy flows through them. The lower the resistance (ohm) in the coils, the more energy is able to flow through the coils, and the hotter the coils get. Because of the high power (wattage) associated with sub-ohm vaping, safety must be a chief concern. Besides the coil, heat can also build up in the battery. If the amperage limit of a battery is exceeded, it may fail and lead to a fire or explosion.

Dangerous? Not Exactly.

Is sub-ohm vaping dangerous? It certainly can be, but it’s somewhat like driving a suped-up hot rod. You can choose to drive it through the suburbs, obeying all speed limits and traffic laws, or you can take it to the local race track and push the pedal to the metal.

The bottom line is that when basic safety precautions are understood and followed, sub-ohm vaping is relatively safe. This is especially true when buying a modern box mod or mechanical mod with built-in safety features, like the ones listed [here]. Otherwise, if safety rules are broken, a sub-ohm device may fail, leading to injury or property damage from fire or explosion.

E-liquid for Sub-Ohm Vaping

Vapers prefer different e-liquids for many reasons. One thing to keep in mind when choosing an e-liquid is whether it will be used with a high resistance (1+ ohm) or low resistance (less than 1 ohm) atomizer.

There is a tendency for vapers to choose a greater vegetable glycerin (VG) to propylene glycol (PG) ratio when sub-ohm vaping. A greater percentage of vegetable glycerin results in bigger clouds and denser vapor. Since sub-ohm vapers often chase larger and larger clouds, the higher VG:PG ratio is usually preferable. VG has the added benefit of being less irritable to the throat, which is helpful when inhaling lots of vapor.

Since so much vapor is inhaled during sub-ohm vaping, people sometimes prefer lower nicotine strengths. We recommend testing e-juice with a strength of 6 mg/ml or lower when going with a sub-ohm mod.

Sub-Ohm Safety Tips

At the end of the day, vaporizers are tools. Just like sharpening a knife is important to kitchen safety, so is keeping your vape clean. Clean vapes are happy vapes. If gunk builds up, it can lead to overheating, which is bad for the vape, and bad for you!

Also, make sure that your sub-ohm vaporizer has at least one vent. This is super important as it allows a failing battery to leak properly. If a battery fails and no vent is present, the battery may experience compression and eventually explode. Of course this is almost unheard of, but it is technically possible.

The vent can be as small as a pinhole somewhere on the device. Just to put your mind at ease, all of our vaporizers on Full Tank Vape are vented. Do not take this lightly. Make sure your vape is vented!

When it comes to batteries, make sure to avoid exposing them to extreme temperatures, hot or cold. Keep them dry and replace them if they become damaged in anyway (dented, torn wrapper, bent, etc.).

Thanks to vaping culture slowly making it’s way into mainstream culture, most modern vapes are equipped with safety mechanisms which automatically shut off the device when the batteries are getting overworked. Regardless, safety should be a chief concern when using all vaporizers, especially sub-ohm types, so keep the above tips in mind.

Stay safe and happy vaping!

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