you are correct, however, this one works in my RRT-01
Im very happy with it
bear in mind it is UNprotected, so you will need to be responsible about checking battery voltage.
more info here
and more info in these posts about voltages, lumen levels, and Unprotected 18350 IMR cells in RRT-01:
[QUOTE=jon_slider;5280368]I just started using an unprotected 1200mAh IMR
I have correlated some voltages to lumen levels
a CR123 cell below 2.9v, cannot achieve 100 lumens maximum
a CR123 cell, below 3.1v cannot achieve 200 lumens maximum
and the IMR, above 3.9v, can achieve over 400 lumens maximum
visual data
note that for the IMR, I had to switch the scale on the light meter by 10x (yellow arrows), so the 43.7 corresponds to 437 lumens. In all cases, the rotary dial is at Maximum.
This is with an N219b 4500k 9080 LED mod in my RRT-01. My light meter is calibrated to my 200 lumen HDS.
Conclusion, when my RRT-01 w IMR battery drops to 25% of initial brightness, it is not yet overdischarged, and still safe to recharge.[/QUOTE]
[QUOTE=TIP AND RING;5280363]i have been using the unprotected Aspire/Vapcell 18350 cells and have been really happy with the performance of these cells. After any use, I charge them and test voltages. As a very simple rule of thumb I treat voltage readings as follows for li-on.
Resting voltages and capacity for li-ion cells:
4.2V – 100%
4.1V – 87%
4.0V – 75%
3.9V – 55%
3.8V – 30%
3.5V – 0%
[/QUOTE]