@Vape?
I'm hoping you were able to watch the YouTube vid I posted and that it made sense. I'm feeling like we're making this more complicated than it needs to be. Here's my take - after which I'll shut up!
1. What is required to vape.
A. Mod (also called a battery. I'm going to call it a mod.)
B. Atomizer (also called a tank)
C. Coil
D. E-juice
2. Mods
A. Mods are "regulated" or "unregulated." Regulated mods have built-in safety mechanisms. So do some unregulated mods, but we're going to ignore those, for now.
B. Regulated mods are either "static" power or "variable" power. Some static mods, like the one you have, are variable, but they don't really let the user control the power. We're going to ignore those, for now.
C. Variable mods (these are all regulated) can vary the volts, the watts, or both. Variable wattage (VW) and variable voltage (VV) are similar, from a user's perspective. However, most new vapers find variable wattage (VW) easier to work with. We're going to focus on VW mods.
D. Some mods use an onboard battery - the battery is built in to the mod. These are charged through a USB or equivalent. Other mods use a separate battery that gets charged in the mod, through a USB or outside of the mod, on a charger. There are pros and cons to each. They don't matter, right now.
3. Atomizers, or tanks, hold juice and a coil. When the mod is fired, the coil heats up the juice and produces vapor.
A. There are many atomizers. Some are made from Pyrex, others from plastic, and others from metal.
B. Atomizers come in various sizes. This is personal preference. Some folks want a large tank so they don't have to fill it as often; other folks prefer a smaller tank.
C. Atomizers use pre-made coils, also called "stock coils," or use coils that you have to build yourself. We're focusing on stock coils, because they are easiest.
4. Coils
A. Coils are basically one or more wires with wicking to hold juice. The wires are coiled - hence, the name- in various sizes and with various kinds of wire.
B. The longer the wire, the higher the resistance.
C. Resistance is measured in ohms. I'm not going to try to explain that, now.
D. Coil resistance is typically referred to as sub ohm (resistance under 1 ohm) or higher ohm (resistance is between 1.0 and 2.0 ohms).
E. The most relevant distinctions between sub ohm and higher ohm coils are these:
i. Sub ohm coils require more power to heat up and produce vapor.
ii. Sub ohm coils produce more vapor (clouds).
iii. Sub ohm coils lend themselves to "direct lung" vaping.
iv. Higher ohm coils require less power, produce smaller clouds, and lend themselves to "mouth to lung" vaping.
v. Many people think higher ohm coils produce better flavor. This is a matter of opinion; it is personal preference.
This post is too long, already. I'm going to start another one

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