Measuring weak currents is not simple or easy. It depends who is doing it, how he is doing it and what equipment is being used. For instance, trying to use a cheap clamp meter for it, is - sorry for my bluntness - a joke.
Most of all, unless all of the above conditions are near perfect, comparisons between measurements from different people are worthless.
So, in service to the community that has helped me so much on my road to becoming a Torchaholic (I live in London, we call them torches here), here is my method and measurements.
I used a Calibrated Brymen BM869s and a fully charged KeepPower 18350 1200mAh. A rubber band held the battery and probes in place. I measured each light for 13 minutes, as when measuring weak currents, more time gives more accuracy. I took a measurement every minute.
The lights measured were:
RRT01 2019 model, with the driver it came with
RRT01 2020 model, with the driver it came with (verified 2020 driver inside)
TC-R1 with 2019 driver, sourced from Jetbeam
TC-R1 with 2020 driver, sourced from Jetbeam
Here is my measuring setup:
And here are the results:
As you can see, there is no difference in the drain current between the 2019 and 2020 drivers, both the ones that came inside lights and the ones I sourced from Jetbeam.
jon_slider, if you still want the 2020 driver out of your home, I will be happy to have it
Disclaimer: No torches were harmed during these measurements.