I know this thread is a little old, but I have been wondering how the Klarus G20 runs the xhp70 with a single 26650. I guess they can put in a driver the pushes the voltage up. All I am saying is a single cell can run the xhp70 even though it's voltage requirement is 6 or 12V.
What is the forward-voltage across that LED?
How long does it run continuously at 8,000 lumens on a charge?
is the night photo showing light on the hillside a photo of this light running on its own?
Can you provide a video of yourself turning the light on?
How do you measure the lumens it puts...