thanks for all the driver pics, you did a great job getting them in focus
the TiTool w Nichia has that little rectangle around the 10 oclock position. CRX suggested it was part of a feedback circuit for the electronic switch… Im not sure if that right, but, you can see the same spot on some of your other drivers, for example your CuTool w Nichia, but it is sealed off (as the driver is being used with a non electronic switch).
my conjecture is, the TiTool came with a new driver, and the same driver was used with the subsequent CuTools. I suspect All of those are inefficient, but, anything is possible, since what really changed was an inductor on the back of the board, and I have no hint as to when that actually happened.
It also appears that in some cases, the driver for the worm, went into other lights, your Maratac being a prime example. And so far, All worms got the efficient inductor…
time wise, the Worm came before the TiTool, that is to say, imo the inductor change coincided approximately with the release of the TiTool.
I also have 2 ReyLight Cu Tools, they came out just before the TiTool, but again after the Worm. One of the ReyLights has the efficient inductor, even though it does not have the large button of my worm and your maratac…
I look forward to your runtime tests, and am glad you are adding a control light so you can get a better idea when lumens drop by 50% or more…
enjoy your lights, and your weekend!