Well... yes, many. And you've summarized them all in your own post
This is one of the best I've found:
http://www.e-cigarette-forum.com/fo...e-wanted-know-plus-bit-electronic-theory.html
In any event, LR/SR/HR are relative categories. That means resistance is a continuum, it's expressed in number of Ohms. Generally Low Resistance is considered <2.5 Ohm, Standard 2.5-3 Ohm, and High... 3.5 - 4 or above (?never seen higher).
The resistance is important in the mathematical relationship Power = Volts x Volts / Resistance. What you feel as warmth and throat hit depends directly on the heat output of the coil which depends directly on the power output. So - higher volts
or lower resistance equals more and warmer vapor. If you look at the formula, volts will affect power much more than resistance. Also, obviously, the more power you draw from the battery, the faster it gets drained.
The only exception is the dual coil device category - these have a low
total resistance, but in fact they are made of two
standard resistance coils linked in parallel. Therefore, they draw power like a low resistance attachment, but their vape is cooler, because it's pretty much as if you vaped two standard resistance attachments at the same time.
There are a few limitations:
- lower capacity batteries cannot handle the fourth variable in electricity - the current intensity (amperes) needed to power a lower resistance atty/carto, therefore standarad "e-cigarettes" can't use low resistance; the magic number seems to be 450 mAh, although it is a more complicated issue involving the battery capacity (mAh) and it's "C rating" (how fast it can discharge safely).
- if you can use higher voltage and higher resistance to get the same power you will also get more battery life than if you were to lower the resistance
- some juices can't handle higher power and start to taste burnt, whereas others seem to shine at a higher power; eventually, all juices will taste burnt at some point...
Hope this helps rather than confuses...
