very informative stuff, jackbox!
Here is all that matters. From the above referenced video (ecigadvanced review). With single 18650 max power is about 11 watts (more than enough for me). With stacked 18350s however, the max wattage can go as high as 22 watts. If you want a normal vape and you know what wattage setting to use to get what you like, it is a good reasonably consistent device. If you want a "mega beast" then use stacked 18350 (be careful you don't burn your lips).
Yellow = 18650 @ 3 ohms
Blue = 18650 @ 1.5 ohms
Red = 18350 X 2 @ 3 ohms
Green = 18350 X 2 @ 1.5 ohms
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