What is it with battery packaging? Okay, I understand the security thing, except the really obvious point that no one would bother to open the package. They' just pocket the whole thing and walk out! Is the package punishment?
I have strong nails so I was able to pry the cardboard away from the back where it had been "conveniently" scored. How others with worse hand problems would do it I don't know. I'm sure tools would have to be involved.
And, ironically, these are "medical" batteries.