Watching videos today and have it handy so here is the reason someone may need/want to stack 18350's in a Vamo.
A PBusardo Review - The VAMO V5 - YouTube
Should cue up to the right spot, if not 26:36.
So can we please stop saying there is no reason? There obviously may be a reason for some set ups for some people. (Pay attention to what I said about a dual 1.5Ω, if 4.5v wasn't enough for me I don't imagine it would be enough for anyone.)
He does a test earlier with the PWM. I'm not sure if he did the test on earlier Vamos or if I forgot but I was wrong (at last for the V5). In stacked mode the PWM is hitting at higher than 6v so it is not always stepping down, at least not as far as what is being delivered although it is as far as what your setting is according to what PWM is equal to (and confusion sets in).
I checked, I can put the tubes from my two V3's together and stack two 18650s. It also makes a nice walking stick.
