I added MF01-Mini test results to my earlier comment:
MF01-Mini: I tested both turbo and the ramp ceiling, because this thread indicated regulation problems at the ramp ceiling level. Here are the results for both. I let the second test run until the battery was empty, to see how the rest of the graph would look:
For some reason, this light gets the “brighter on a low battery” thing a lot worse than most. Maybe it’s getting an unusually large portion of its heat from the driver instead of the LEDs? I’m not sure why, but it’s the same pattern I’ve seen on every MF01-Mini test.
If anyone was wondering about those small but sharp-looking stairstep adjustments later on in the graphs, they’re not actually sharp. Here’s a close-up of one. It took 32 seconds to adjust output by about 3, moving up one small step (0.39) every 4 seconds:
Each of those 8 steps is the smallest adjustment possible using the given hardware’s PWM controls. The changes are not visible by eye during use.