I went to illumn and tried their protected 1200mAh 18350 Keeppower
Unfortunately, they are too long and the RRT-01 will not close…
left protected 1200mAh Keepower 18350, right unprotected 1200mAh Keepower 18350 that I am using in my RRT-01:
However, Im comfortable using unprotected IMR.
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Clemence has very reasonable prices for his modding services and LEDs.
We may see some progress from Clemence modding an RRT-01 next month. We need to wait and see if the E21a and Optisolis are compatible with the magnetic ring.
here are the issues Im aware of, that need to be assessed:
The light needs to be tested on a light meter to determine IF the magnetic ring remains stable with the E21a and or Optisolis. It IS reasonably stable with the N219b. The drift is less than 10% and not visible to the naked eye.
by stable I mean, that I dont want the lumens to keep drifting once the ring stops turning.
I test that by putting the light on my light meter, and then rotating the whole light, 180 degrees, Im not turning the dial.
you can see the variation is less than 10%, not visible in actual use
this V11r w 3000k N219c was not acceptable, the drift was too large:
ranged from 65 lumens to 124 simply by rotating the light 180 degrees.
The V11r also had a very large continuing change in brightness, after I stopped turning the ring itself.
So Im reporting 2 different factors, first, the change from repositioning the whole light by 180 degrees. Second, the fact that the lumens continue to change significantly, after turning the dial and letting go.
Other issues with the RRT-01 is that there is photographable flicker (constant current ripple), but that is not visible to my naked eye. Most Constant Current lights do some form of this: (including Olights, and on the Olight it is visible)