I FINALLY got in my SRK neutal white from Lightmalls… I loaded it up with some Panasonic 2900 mAh cells and crammed it into my sphere ’o many mysteries (Any interest in a LED/Battery analyzer device?)
It starts out at around 1700 lumens and after 12 minutes is down to 1500 lumens. And the temperature is up to 66 C (BTW, it hits near 80C after 25 minutes) Low is 165 lumens. PWM freq on low is 200 Hz.
The color temp on low is around 4725K. It pops up to 5050K on high.
An interesting observation is how the light level stair-steps down as the thing heats up. Maybe some kind of thermal management going on, but I doubt it since it can hit 80C after 25 minutes of high beam.