I'm sorry to revive an old thread, but I had a quick question about this light. Does anyone know if a 10400 would fry it? I'm guessing it is direct drive, but that is just a guess. I think the 5MM Nichia GS is only rated to 3.4 v though.
The current that you're supposed to send through these are tiny compared to cree's, so no it probably won't work and you wouldn't want to do it even if it did.
They have been sending the tiny keychain version which uses the watch batteries instead of the mini tac ..it's a very cute little nichia light too..it looks exactly like a mini tac .. it's just 1/3rd the size and just as bright ..i like both ..let us know what they are sending out when you recieve your light .
I got the same thing in black .. it looks just like the mini tac .. is called the nano tac takes Lr754 watch batteries(cheap on ebay) and is a forward clicky..a nichia (same output as the mini tac ) almost exactly the size of a AAAbattery but 1/2 inch longer ..I had previously tried to avoid this light because of the 4 watch batteries now i like it as well if not better than the mini tac ..nano tac rules as a keychain light that works well lasts a long time and weighs nothing .
I happily received my survey light a few weeks ago, to my surprise they sent me the G10 led light. 1xAAA, 18 lumens at 3 hr run time. Same shape and size.