Thanks, that’s what I was thinking so the light could more usable.
I would compare the light to a Maglite, which I’ve seen modded with 3x xhp50 / 5000lm
https://asflashlights.com/led-upgrades-for-maglite/84-5000-lumen-2-d-size-maglite-choice-of-color.html
But I also see it gets real hot, 225 degrees in 15min. What you got today - #9595 by Terry_Oregon
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Also there’s no 5050 16mm mcpcb with pads to mount the mosfet, so LD-B4HV can be used only with 20mm mcpcb, correct?