Thanks for this thorough and well wrote piece of information. You are right.
That said I never planned to offer it without educating the "gifted". But I sure also would like to minimize any risks. It's kind of doubling the security measures, too much is never too much. I'm trying to find the hazardless setup to fuel this L6 light. If I rephrase, my need would be "What is the safest way to store 6 to 8.4v in a 2x26650 space?". And at that point, without any magical AAAs to 26650 adapters appearing somewhere (with also really strong hopes that sag would not kill them), the safest energy option seem to be KP 5200 protected cells.
User measurement inconsistencies all over the place, at times in a wild way. Honestly, one would not expect this from a reputable cell manufacturer (Power Long Battery), so something fishy is going on behind the curtains. This could be because of rogue merchant dealing with and selling factory rejects, or who knows what other trickery.
The one I posted is linked directly from Littokala’s website.
I ordered 4 of the new blue 5100mAh 26650s about a week ago. When they get here, I will check-test the capacity and internal resistance with my chargers.
No fakeness to be proved there. Their cells have been tested by Henrik here and there, delivering consistent capacity above 5Ah in any case even at 1C rate as per official PLB specs (a Lii-500 discharges at 250/500mA, which at most is 0.1C). God knows what they're doing those AE merchants besides deceiving and dissapointing customers.
Of course I do not mean to say all AliExpress sellers do the same, but the way AE works seems to be fertile ground for crooked sellers. In my opinion the whole LiitoKala battery rewrapping division smells like a nice fart. :-D