I just added a feature to my LED analyzer device (Any interest in a LED/Battery analyzer device?) that lets it sweep the LED with a range of voltages and records the various LED parameters. He it is sweeping an XML from 0 to 1.8 amps. At an LED Vf of 3.000V the LED was drawing 1.225A and 3.675 watts. Don’t have any XML2’s to play with.
