thanks for the info and brightness specs before and after CRX, N219b (3x brighter), and after N219c (4x brighter)
You make a good point about the lights being bored large enough to fit 18350, if paired with a different switch, and possibly a different driver.
I dont yet know what clip diameter is required.
I tested the Low Battery warning on the Novatac, and it starts at 3.1v
These lights dont have true OverDischarge Protection, they are designed to keep glowing dimly and not to turn off suddently
after initially stepping down several times, when a 16340 drops below 3.1v, the light goes into a 1 lumen mode that strobes. I ran it that way for 45 minutes before I decided to shut the light off and then turn it back on. I used a protected cell, and when I turned the light back on, it came on at my preset of about 5 lumens, shortly after the Overdischarge Protection in the battery, shut the light off.
here is what the Low Voltage behaviour looks like after step downs:
Novatacs require a battery reset to recognize Primary CR123 and LiIon, so if the light has been using LiIon, and the user wants to switch to Primary CR123, a Battery Reset is required. Otherwise, after using LiIon, inserting a CR123 fools the light into thinking it is a depleted LiIon and the step down program comes into play while the CR123 is in use. The battery reset requires the operator to perform a specific behavior, battery detection is not automatic in the Novatac line. That makes it safe to open and remove a LiIon, and reinsert it, even if the LiIon is below 3.3v, without the light mistaking it for Primary, and causing overdischarge.
yes coppett, the tripple is tempting, here is one: