+I imagine that if you test each of those batteries, that you'll find that at least one of them isn't coming up to full charge.
Tested and topped all off at 4.2V
Been running them in a P70 emitter light for ceiling bounce today because it was cloudy,,
runtime is similar to my Samsungs'.
Also, I soldered small magnets on two of them for my Fenix headlamp, they need buttontop cells.