Why is one battery marked #1 on the Voyagers?

[jonese]

As I was cleaning my newly acquired 11C today, I think I may have stumbled on another potential reason to insert the rightmost battery first (marked #1).

If you've seen the inside of some earlier units, you'll notice that the rightmost connector (the negative terminal) is actually a thin protruding extension of the circuit board covered with a conductive trace on the edge where it touches the battery.

I wonder if HP thought there could be possible damage to the conductor or worse the board if the battery were slid in sideways. Placing this batter in first, would avoid this potential situation.

Just a thought.