UPDATE: New Flickr Album Link: https://www.flickr.com/photos/garrybunk/albums/72157664781725888
I took a chance on Kaidomain's Gemini Duo/YingDing clone. My driver runs on 4.2v input (as stated in KD specs). I tried 8.4v input and the battery level indicator just flashes red-green-red-green, etc. . . . light won't turn on or do anything else at all. Current draw on 4.2v battery (with thick leads, which made a big difference in output) was:
Off: 0.013A
Low: 0.51A - 28%
Med: 1.23A - 68%
High: 1.795A - 100% (so about 0.9A +/- per LED)
Someone posted this mode change behaviour previously on MTBR, but I can't remember where and which light. When you change modes the light actually dims very slightly and then "ramps" up in brightness quickly until the next mode level is reached. Off happens instant though. Modes are: Off-Low-Med-High-Off. Press-n-hold for strobe. My driver is NOT the "10 step programmable" one which has appeared in some of these.
TIR lenses from LED-DNA are interchangeable once removed from their white holder
Pics:
Beamshots:
Low:
Medium:
High:
So even though I felt it was under-driven, the beam on high doesn't look so bad. I think I will still resistor mod it for a little more output and address the lack of heatsinking. I'm intending this light to be a helmet light, so I'm keeping it more of a thrower with a floody light on the bars.
Mouseover with my standard 808E clone:
Mouse Out = KD light, Mouse Over = 808E Clone:
Mouseover with my stock HD-016:
Mouse Out = KD light, Mouse Over = HD-016 (flood & throw both on):
Some comparison photos with the HD-016:
This light is TINY!
Discussion on resistor modding this driver posted in this thread.
-Garry