XM-L vs XP-G math question ?

videoman

Enlightened
Joined
Jul 26, 2009
Messages
422
What current must a XM-L be to be at the same heat level of a XP-G that is driven at 1.2 A ? I am roughly estimating it to be 1.45 A. Am I in the ballpark figure or is there a way by the specs alone to come to a reasonable figure. If so, how can that be calculated by the specs alone without having the actual leds and a thermometer ?
 
Top