For everyone interested, today I updated the post #1 and post #2 with some news on the Status and the 2nd batch.
Please take a look for the latest infos.
Test conditions:
driver temp sensor on PCB calibrated
set to 50°C
Full AMC heating at 2.4A
Time lapse x5 almost 5 minutes
I found that stock the Anduril firmware seem to quite regulating after first throttle, it may get into unsafe temperatures
In an assembled light a lot of the heat will be conducted away from battery tube, so the bare AMCs will stay a bit cooler
and the AMC heat spreader will stay quite a lot cooler than in this test
1. tested stock upper left
it seems after first throttle the temperature regulation quits and it heats up to 70°C on PCB
Great comparison, Lexel. The clamp meter is a bit hard to read in the copper spreader test, but it looks like it stays around 2.4A perhaps? Aluminum doesn’t appear to be too far behind, but definitely better than running it bare.
As expected, the temperatures on the copper version stays a bit lower than on the aluminum version.
Also the heat distribution between the heatsink and the head seems to be best balanced on the copper version.
Yes with both heat spreaders in those 5 minutes the light ran constant, the clamp meter sometimes is acting bad not reading correct or fluctuating a bit, I may have to open it and clean
I am not sure how the temperature is affected in the total light assembly
with it the temperature is definitely a lot lower as the driver gets most cooling connection to the battery tube
But the strange behavior when thermal throttling should be history
Still it seems there is a bug in the firmware when it ran without heat spreader Anduril kept going almost at 100% while the light constantly heated up far behind the set point