Dr Oh
I agree that the FAQ is very Quiet on how many.
My point was most users never process enough books at one time to ever need to worry about how many at one time
Quiet also does not imply 'Sky's the Limit'.
Most of my BIG Adds (Add from ISBN) have been in the 20 range, When I would Barcode scan my paper library. Then I would look what came in and fix the 'Unknown's' (Some of these books date from when I was on
Forestal and needed something to read

. 1 sea bag for books. Right?) then do another stack
There are just too many other variables for Kovid to publish 'A' hard limit on the number of books to import in 1 shot.
So the simple formula: You have problems? You are doing too many