Guess it's hit or miss on these lights then.
The one that does work is an excellent light though . . . . .
Xtar, this is obviously a problem
How can you help us
Fwiw I own 7 Xtar lights. I have had to warranty out 2 proprietary batteries and it did take some back and forth but they stood behind it. Other than that my lights have been flawless (and one of them is a 1600S).
Depending where you are in the world the emails may have a delay, they'll email me at 2am my time and I'll email them back at ~ 6am and then wait for a response. But they've stood behind their products. I know some other people on the board have had a few issues, but I don't believe that's the norm.