I started out with an Ego-T Upgrade, which is kind of a variable voltage - it had two levels, Regulated (which output 3.3V) and Unregulated (which put out a higher amount, depending on how charged the battery was, of up to 4.5v). You can switch back and forth using a 5-click--hold--5 click pattern on the button.
I noticed that some flavors tasted different (better) on the higher voltage. I also got a stronger hit, which was helpful when I felt I needed nicotine more quickly, or when drinking. (haha.)
I since upgraded to a true variable voltage (the Vision Spinner), which can be infinitely adjusted from 3.3 to 4.8V, and have noticed an incredible difference in the vapor production at the high end, and the difference in flavor from one voltage to another. For example, a rocky-road flavor tastes good at 3.3, amazing at 4.0, but kind of burnt at 4.8. (This is using a 2.5ohm coil in a Kanger MT3S.)
Note that using a coil with a different resistance (measured in
ohms) will affect the flavor/hit/vapor production as well. The interaction between the output voltage of your e-cig and the resistance of your coil results in a wattage (Voltage
2/Resistance = Watts). There's a chart floating around the internet that shows the actual computed wattage for various combinations of volts and ohms - you can see it at
General Safe Vaping Power | Voltage | Resistance | Ohm Chart. The wattage is really the important number, and keeping it between 4 and 9 seems to be the ideal range for most juices.
So why variable voltage?
- Adjust to different juices more easily, and find the sweet spot for any given one.
- Adjust your vaping to your mood at the time.
- Fine-tune your vaping experience based on the resistance of the coil in the cartomizer/atomizer you're using.
My first post, hope it's helpful!