That Panasonic resembles some of the models presented in the Massive fraud on 18650s in the Littokala Aliexpress stores! thread!
I’d suspect that is not an original panasonic cell…
Also, these cells are not for high drain flashlights, specially if they are protected (I can’t tell by the photo you presented).
If the flashlight wants to draw more current, the protection may interfere with that.
If you want original cells, check this AliExpress store:
https://www.aliexpress.com/store/1382210?spm=a2g0o.store_home.pcShopHead_170077949.0
I’ve bought many cells from them, with “fast” delivery even during Covid-19 situation, and they are original cells!
You can still get Panasonic protected batteries or you can get some Sanyo NCR18650GA, that have good capacity and are good for that 5A drain.