As I detest leaving questions here in unanswered when they have actual answers, allow me to condense the comments and external links.
We'll begin with the definition from your excerpt, with the expanded definition of battery in italics for readability, and bold italic for the corresponding alterations it makes to the content of the definition.
Inside the limits of the series or large group of related geographical boundaries (which enclose a plant or unit being erected), established for the purpose of providing a means of specifically identifying certain portions of the plant...
Though Ben Franklin was thinking of the same thing when he used the word battery to describe his invention that used a series of electrical capacitors to store and deliver a useful electrical charge, that's more of an aside.
These both point toward an earlier military definition:
A series (of two or more) pieces of artillery used for combined action.
The idea here being that as the number of guns pointed at a given target increases, the more devastating a strike from those guns will be. One gun makes a hole in a wall, two guns make a bigger hole or penetrates further, and so on until you run out of space to place more guns (or patience, or overload the weight bearing capacity of whatever you're putting them on, the list goes on).
From here, we jump from English to French, who used the word batterie to describe (I'm paraphrasing here for simplicity's sake)...
Bombardment (raining of heavy blows down upon) of a target, or the weapons used to do this with.
And this evolved from use of their original use of the word baterie to describe...
The act of beating; thrashing; assault.
Which, consequently, the word battery also means in contemporary English, though the legal term is more restrictive (and beyond the scope of this answer).
Compiled from the comments of JavaLatte, TRomano, CowperKettle & Sina, and the sources they provided.