If you are using sub-ohm tanks and coils (sub-ohm means coils with resistance less than 1.0 ohms), it is important to know some basics to avoid liquid getting into your mouth or liquid leaking from the airflow channels, etc.
In addition to the technology required, you must also ensure that the battery (power source) you use is capable of operating with the low resistance of the coil. Faulty low-resistance coil batteries are a serious safety issue (overheating/explosion/fire), so if in any doubt, get more information first.
Sub-ohm tanks and coils must be used by experienced and knowledgeable users due to the extra safety precautions that must be taken when working with these items. These products require the use of modules/batteries capable of firing at sub-ohm resistance. So, for example, if you have a 0.5-ohm coil in your tank, your module/battery must be able to fire at 0.5 ohms or less. You also need to make sure your equipment can handle the amp. Improper use can result in personal injury and equipment damage.
Sub-ohm e-cigarettes have become popular with users who want more vapor and/or more flavor.
Sub-ohm vaping isn’t for everyone, so don’t think this is or should be the goal of every vaper.
We’ve included some details about the EleafMelo for clarity, but this article is relevant for most sub-ohm devices, you’ll just need to fine-tune everything to your device.
How do sub-ohm e-cigarettes work?
All mechanical modules, variable voltage/wattage regulation modules, and e-cigarettes are battery-powered electrical devices.
The practice of using or building low-resistance coils is directly related to the principles of Ohm’s and Joule’s (electricity) laws, which state that given a non-variable voltage source (say, a battery in a mechanical mod), you can increase the power output (watts number) by reducing the resistance (ohms).
When using variable voltage/wattage devices, low resistance/sub-ohm coils are not always required, but when they are required, the device can be run at a higher wattage output.
As the resistance decreases, the amperage increases (your device will use/require more amps to deliver the current it needs), which increases the stress on the battery, which increases the heat generated by the battery and coil.
You have to make sure you never exceed the battery’s amperage limit.
The concept of sub-ohm e-cigarettes is simple, however, users must understand exactly what they are doing before using them. Make sure you follow safety rules to avoid malfunction of your equipment which could lead to fire or explosion causing injury or property damage.
Make sure the wattage, both in wattage and voltage level, is in the correct range for your coil. This range (their min and max) is printed on most coils, although it is sometimes difficult to read because it is so small.
For EleafMelo 0.5 ohm coils, the wattage printed on the coils ranges from 20-30W.
For normal sub-ohm vaping, an average wattage output of 30-35W may be a guide to the type of power needed.
Melo design is suitable for EleafiStick30Wmod matching range 5-30W, then if you set the wattage too low, the liquid will not evaporate, instead it will make a gurgling sound, the color of the liquid may become darker, and you will end up with it In your mouth or ooze as much as you can because it has nowhere to go every time you press the fire button.
The actual range you may need to use the vapeMelo is around 25W.
E-liquid for sub-ohm atomization
You’ll also want to use a good quality e-liquid with more VG than PG (VG is thicker than PG, produces more vapor, and reduces throat hit).
An 80% VG ratio is usually ideal for very low resistance, but you may find that anything from 70% VG to 50% VG is the right choice for your coil.
Do note that 6 mg (0.6%) nicotine is probably the absolute maximum strength e-liquid for any sub-ohm device.
If you can’t take the hit of increased VG content vapors in e-liquids, then reducing the wattage will cause more problems than it solves, instead you need to reduce the nicotine strength.
You may also find that higher strength e-liquids (over 6mg) have a burnt or pungent taste when using sub-ohm coils.
Sub-ohm lung inhalation technology
When you press the fire button, you need to inhale directly into your lungs. Sub-ohm e-cigarettes generally have a looser, more ventilated draw and are designed for direct lung inhalation rather than the more traditional mouth-to-lung inhalation.
Don’t let the juice build up in the coil (not in use) as it will boil like a kettle when the ignition button is pressed – you want the juice to be in the coil and then evaporate. As a guide, a 3-4 second draw is about average.
If fluid builds up in and around the coil, you’ll hear it crackle and pop loudly.