Anybody try Quark QK2A MKIII on a single AA body?

[cave dave]

Specs say the Voltage Range is 0.9V-1.5V, which is clearly wrong. Can the Low voltage head handle LiIon 4.2v max, like the old ones could?

I also like eneloops, what happens to the output on eneloops, I presume the max would be less, what about the other levels?

 

[Got Lumens?]

0.9-3V for the QK2A head.
Works well with a single AA tube, with less maximum output. NiMh cells are preferred and well.
I also have used the QK16L head with the AA tube and a 14500 cell.