Interesting fyi, I added 22 AWG wire bypasses on the springs (short ones in the center of the spring), and got ~ 25% boost in lumens and candela.
Measuring amps at the tail, on a charged up 40T the amps went up from 14.7A to 16.5A, but that's only seeing the bump of the bypass on the driver side because my amp measurements are with the tailcap off. I did the before/after tests with both a 40T cell and a red Dolidada 5500 26650 and saw about the same percent bump. These springs are not high performance, accept maybe for their thickness but they are not low resistance.
Is X in minutes or seconds? My lumens measurements are in "Tom E" calibrated lumens which is 12% higher than Maukka cal'ed. Just subtract 12% from my #'s. I didn't get their kit w/battery though.
My "Tom E" units were originally based on manufacturer ratings, but leaning towards the manufacturers that are higher end and consistent. It's rare to see any manufacturer come close to Maukka rated lumens. I try to give the manufacturers benefit of the doubt by still using "Tom E" ratings rather than Maukka cal ratings, but comparisons on BLF here is better to use Maukka ratings. For me it's easy though - 12%, that's it. I did have the Maukka cal lights to calibrate my PVC lightbox by.
I’ve gotta say… I did a couple updates to my lumen tube and set a new conversion factor (using my TO50R as a trusted source, alongside Maukka’s confirmed measurements of the TO50R) and I’m now showing 2200 lumens with my SP33 V3 as well