This might not be the right stack exchange for this, but I bought a pack of generic 48 alkaline AA batteries, Costco brand (they're probably manufactured by Duracell since that's the only other brand Costco seemed to carry), and they called them "Battery Piles." I know that one of the first voltage sources, by Alessandro Volta, was called a voltaic pile, but I was under the impression that modern batteries use a different chemical mechanism for power delivery, and my research into this topic seems to back this up.
So why are these batteries called "Battery Piles"? Is this a marketer's attempt to avoid IP infringement, or is there a new mechanism that they use for batteries?