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XMMR 5000K on a FET+1 driver run by a Tenpower 50XG:

15A buck not gonna push 15A through XM-MR. Vf is waaay to high for that. I still need to measure mine running off a fet driver. But 4.1V at 14A is beyond direct drive for most of smaller cells we’re using (21700 and smaller). Maybe someone finds a unicorn with low enough Vf.

other LEDs

15A would be perfect for the XMMR

Please message me if you have one available

Thanks!