I experienced the same thing when I decided to try a couple of Efest 18350 IMR's to add to my AW 18350 rotation. Within just a few weeks use I noticed the newer Efests couldn't match the longevity of my older AW's.
I ended up disposing of the Efests as I couldn't depend on them to last long enough to be useful.
I ended up disposing of the Efests as I couldn't depend on them to last long enough to be useful.
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