Some of you are driving the XP-E2 Torch at 2.75+ amps it is stated. Don’t you consider this quite high for an E2, even an E2 Torch? My question results from data acquired from the thread located here comparing AL vs Cu sinkpads: Emitter Test Results pt4: XML2, XP-E2, XP-G2, and Nichia219! (along with sinkpad tests)
In the above thread it is seen that the output curve is rounding off at around 2.4A for the XP-E2. Above 2.4A, it appears the actual percentage gain would be very minimal in lumens. Of course you would have increased localized heat soak around 3A with the high value of 9 C°/W thermal resistance of the die (compared to G2 or especially L2 dies). IMO, I do not see much benefit running this emitter above 2.5A for maximum average gain, and that would be with a healthy size copper pill. At 3A, I would assume you may start with quite a bit more intensity than would be achieved if the test were repeated again 5 minutes later.
Thoughts?