2 Freshly charged batts under load read 5.1 to 5.4 Volts...Loosen cap its 6ish...Either way it dosent seem much different to most..
http://www.nhaler.com/instructions.html See Demos...
I have tested it extensively and realized different voltages where others have said they cannot...At this point I dont even know, why or how others do or dont get it too work or not work...The bottom line is that it vapes at 5.1 ish when fully charged and as the
batteries loose there charge it goes down into the 4s...The cap was designed to add resistance between the body and the button.... I beleiev it to be the be the fairest priced most rugged Mod on the market with an unlimited warranty on the entire unit...Im also coming out with a new easy push button some time this week that wil be avaialble for all the Xhalers and be a standard on all new Xhalers and XS-Halers....There are no soldered resisters or anyting else in the cap...Thanks for your interest...
Drew