I've been reading up on some of the problems that some folks have been having with their DI's up to this point, and while it is a little dis-heartening to read some of the "woes", I'm happy to report that mine seems to be working fine up to this point. I run it strictly on AW protected 14500 cells. Two nights ago while cleaning and lubing my DI, I stumbled upon what I consider to be a "hidden mode". I found that if I push the tail switch in just enough to get the light to come on, it will come on as it's supposed to; but after being on for only about two seconds it will start to slowly flash like a signal beacon. If I go directly from just slightly pushed in until it starts to flash to constant-on (full click), the light will continue to flash in this manner until I turn it off. From off, if I push the tail switch in further for temporary light, the flashing will not occur. Here's how mine works:
From max output mode (bezel tightened):
slight push...light comes on; hold for two seconds...light begins to flash slowly; full click from this "mode"...light stays constantly in slow flash mode.
If I don't wish to access this "mode", from the off position, I simply push the tail switch in a little further (but not enough to click into constant-on), and the light comes on in temporary mode as it's supposed to.
Note: once the light is activated in this slow-flash mode to constant-on, rapid strobe cannot be accessed until the light has been turned off and turned on again. Also, the slow-flash on mine cannot be accessed from the user-selectable mode (bezel loosened).
I know that what I've stumbled on is probably nothing more than a "glitch" in my tail switch, and some may view it technically as a flaw in my light; but I've actually found it to be an extra "mode" that to me simply increases the usefulness of what was already an EXCELLENT EDC light! I don't know if all Nitecore DI's do this, but I'm actually a little tickled that mine does...it sorta makes it unique!
PJD
From max output mode (bezel tightened):
slight push...light comes on; hold for two seconds...light begins to flash slowly; full click from this "mode"...light stays constantly in slow flash mode.
If I don't wish to access this "mode", from the off position, I simply push the tail switch in a little further (but not enough to click into constant-on), and the light comes on in temporary mode as it's supposed to.
Note: once the light is activated in this slow-flash mode to constant-on, rapid strobe cannot be accessed until the light has been turned off and turned on again. Also, the slow-flash on mine cannot be accessed from the user-selectable mode (bezel loosened).
I know that what I've stumbled on is probably nothing more than a "glitch" in my tail switch, and some may view it technically as a flaw in my light; but I've actually found it to be an extra "mode" that to me simply increases the usefulness of what was already an EXCELLENT EDC light! I don't know if all Nitecore DI's do this, but I'm actually a little tickled that mine does...it sorta makes it unique!
PJD