Well, I just happened to also find this first post of yours that no one else has replied to. From it, I see that you seem to be interested in a Titanium light. But, I am a bit confused by your use of "Lithium." Do you mean a rechargeable Li-Ion cell (4.2v) or do you mean an Energizer Lithium cell (1.5v)? At first glance, it does not appear that Klaus (which you expressed an interest in, in your other post) can use 4.2v Li-Ion cells. (Someone who owns one, and has tried it, might correct me though.)