This is a fascinating (and disappointing) thread. I often use 18350 cells in my Emisar D4 “shorty” tube while jogging at night. Wanting to maximize the potential, I switched from Efest Purple 700mAh to Vapcell 1100mAh. I didn’t notice any differences with max brightness between the two cells (which was no big deal), but I was shocked that the Vapcell seemed to have greatly less capacity. After just a couple of runs, my D4 was blinking a battery warning. This never happened with the Efest Purple. I was so puzzled, that I started checking online and found Mooch’s original FB post on this, then this thread.

Is there any realiable high-drain 18350 cell with 1000mAh anymore? I’ve read that Shockli’s 1150mAh 18350 cell is promising but doesn’t seem to have a distributor.