- Yes, you are wrong.
- LVP should be setup to kick in when each cell is in the 2.8v to 3.5v range, not 1v (someone else can get more specific about voltages if you need them to).
- Yes, normally a DD or Linear driver for a “3v” emitter like the XP-E2, XP-G2, XM-L2, XP-L, etc would be used with a single Li-ion cell. LVP would be setup to correspond to the voltages of the single cell.
- I recommend doing a little background reading, it seems that you are way out in left field currently. Lagman wrote a pretty big post a while back on the topic of “Understanding the difference between Linear, Buck, Boost and Direct Drive drivers”. I later revised that post significantly and posted it further down the thread: Understanding the difference between Linear, Buck, Boost and Direct Drive drivers - #56 by wight
Frankly I’m unable to understand your post #17 very well at all. It may be a communications failure, but it looks like you are under some serious misconceptions - maybe just about how LVP works? Unfortunately I’m not certain that the post I linked to will help out with that. Generally speaking in a flashlight with removable cells which are in series, LVP works by simply measuring total battery voltage and comparing that against a value which is known to be “low” for that number of cells. The primary shortcoming of this method is that it assumes that all cells are around the same voltage when they could actually be seriously imbalanced.
EDIT: Or maybe you are simply confusing the words “input” and “output”? (sorry, I simply do not know where the confusion stems from)