Writing underneath the wrap that can barely be read is how all authentic 30Q are. You’ll notice there’s no date code on the 30Q outer wrap, because it’s printed underneath on the can. You can check Mooch’s post here showing what the can should look like under the wrap - note each battery varies a bit in exactly how the codes are oriented: https://www.e-cigarette-forum.com/threads/samsung-30q-20a-3000mah-18650-bench-retest-results-a-great-15a-3000mah-battery.727190/
If you’re talking about the button top, we add that ourselves, that’s not Samsung. I believe we have a couple subtly different buttons that we add on that are all equivalent so it’s possible one may be 2 holes and one may be 3, I could check that on Monday as I’m not at the office now. I think they’re all supposed to be 2 vents. Also if you’re talking about the button top, we add a clear wrap over it to secure the button top. If you’re talking about flat top and not button, then please clarify what you’re referring to as vent holes.
It sounds like you’re using an Opus or one of its clones - these are notorious for having very unreliable IR readings. If you do multiple readings in a row, you’ll probably see different readings. I recommend kinda jiggling the battery in the contacts to clean off any residue on the contacts too and then redoing it, a few times. Getting different readings this way tells you it’s the charger. We’ve found the Opus is pretty useless for IR readings, the readings you’re getting sound exactly like what we typically get on an opus. They’re great for charging and capacity testing but not good for IR testing.
We test all our batches very carefully with a procedure way beyond any competitor including high and low power testing, IR and impedance testing, etc, so it’s extremely unlikely you would get any bad batteries. We’ve not had anyone get a counterfeit battery in our entire company’s history. We have had some rare cases of abuse by the shipping company on their way to you internally damaging the battery and causing it to rise significantly in IR, but that’s very rare. If that were to happen we’d replace them of course.
Hopefully that clears things up.
