Where I work, we have a few electronics engineers that come in, and they so far have said that my best bet is to stack and use a switching regulator. Every time I've used a boost converter (5v), the battery I use ends up getting really hot.
With all due respect, and desire to help you, I have told you several times that I have no electrical background, training, or expertise. The manufacturer is very knowledgeable about every aspect of this device. The manufacturer can answer every question you may have. There are several electrical engineers posting in the ProVari thread. THESE electrical engineers have been using, studying, analyzing, and building
vaping DEVICES with THEIR EE expertise (in other words - THESE engineers have been using these components in these applications to SEE what works better and what does not - under THESE conditions - in practice, not theory. So, with all of these points combined, why do you continue to come to me (the self admittedly techno-ignorant)?
Please take the time to read the provari thread. Your questions and issues have all been extremely thoroughly covered, addressed, discussed and answered by competent people who not only know the technology but who have given focus to this particular application of that technology. If you do not find the technical answers in the ProVari thread, but I imagine you WILL find them, then I'd suggest you contact Provape.
I can only add this, Provape is EXTREMELY busy now (if you would take the time to read that thread - you would see why they are so busy right now). I imagine that if the answers to your questions are clearly covered in the ProVari thread - you'd be doing them a huge favor by reading the thread first before asking for their time unnecessarily.
Finally, for you and as i should have included this in the OP, The device has Safety error codes. When these activate, I believe the device stops functioning as a safety measure.
E1 Short Circuit/Shorted Atomizer
E2 Amperage Limit Exceeded
E3 Thermal Monitor.