Hi performance crank manufacturers like Scat store the crankshafts in cardboard boxes laying on their sides on shelves.Don't know how long they are stored like that,probably a few months maybe longer.
Machine shops store cranks on end cause they take up less room and are easier to move around for the short term.
How are camshafts stored? In boxes layin on their sides like the cranks.
Does a battery discharge more quickly laying on the concrete?