With the discussion of potentially switching to the 95 CRI SST-20, I just want to double down on the LH351D.
The SST-20 is slightly higher CRI, but at 700 lm the LH351D is around 45% more efficient at the same colour temperature from what I’m seeing, and at 300 lm the LH351D is around 25% more efficient at the same colour temperature.
That’s a big difference in battery drain and heat for the same output.
edit: this is based on maukka’s tests of the SST-20 and the LH351C (my understanding is that the LH351D is slightly more efficient than the LH351D at 1000 lm, although you lose a bit of efficiency by going from 5000k to 4000k)
edit 2: actually, that’s got me thinking, after reading through the pre-production review fully, do we possibly want to look at the LH351C? If we’re expecting the light to be 900 lumens or lower (300 lumens per emitter) most of the time, then I think we’ll be sitting right in the LH351C’s target current. Yeah, we’d lose a bit of maximum lumens in turbo (all 20 seconds of it), but the better efficiency in regular use would help the light work better in regular use, and we might be able to source them more quickly.