Just sharing these. My test conditions are not too well controlled though, so pardon some inaccuracies.
I don't have a 'lumens tube', but I do have a basic lux meter, and also just using the 'ceiling bounce' app by zak.wilson.
(test room is a small room which has little outside light reaching inside)
I have 2 Astrolux EC03, one uses an older firmware (probably Anduril build date of 2018 to early 2019) - same as older SP36 Anduril / IF25A / EC01.
The newer EC03, now comes with Anduril version 2020-03-18, based on the 15-click version check.
I used a Samsung 30T charged to around 4.10v, and set the flashlight to "ramp ceiling" brightness level (single click, and then hold until it reaches the top of the ramp)
I manually configured both flashlights temperature to 25 degrees Celsius (although I think the ambient temperature in my place is closer to 30 degrees Celsius), and then added 40 clicks, meaning temperature set to 65 degrees Celsius.
Astrolux EC03 with old firmware
(comment the first "dip" at around 30-second mark is due ot me adjusting the phone/sensor and partially obstructing the light, thus the small dip)
EC03 with Anduril firmware 2020-03-18
I believe the 30T was drained to nearly empty (tested voltage after I stopped the test at around 16 minute mark, 30T voltage was around 3.50-3.55v)
comment:
looks like the new firmware has a smoother regulation than the old firmware which has some less smooth regulation.
(maybe I should use a lower temperature threshold to better see how well the regulation works?)
edit::
forgot to mention, i had a small USB fan pointed at the head of the EC03 in both cases..