What did you mod today?

[gchart]

djozz ran a test with the 4000K version and reported 18% lumen loss and 50% throw increase.

GB 351D closed.

What I did do: (perhaps this is not the right thread for this, but I already started it here, sorry about that) I sliced the 4 LH351D 4000K 90CRI leds in my SP36 sample, and took some measurement before and after. The sliced leds in reflected light show that I sliced very close to the phosfor, on many area’s all silicone is gone on top of the phosfor layer (and perhaps a tiny bit of phosfor too but that does not show up when looked at the lighted leds) [image] [image] I should also have don…

What did you mod today?

The long answer The current draw on a fresh battery is 6.3A. Using TA’s test of a 5000K 70CRI LH351D, at 6.3A the led is at 90% of its maximum output, which is in its quite inefficient region, I usually aim at 80% in my builds, I should remove the spring bypass at the driver side. Also, assuming 18% light loss from reflector and lens, the led lumen of my led (at 30 seconds) would be 1050 lumen, which is 50% of the 5000K 70CRI version that TA measured at 6.3A, so I paid a dear …