Dave Plowman (News) wrote:
In article rA9Me.222977$5V4.179143@pd7tw3no,
Ken Weitzel wrote:

I hold that the damage was caused by interaction between
the very alkaline cement and the battery acid.


How does the acid get there? The case is acid proof, otherwise the steel
it sits on in the car would corrode through in even shorter time.

Aren't all car batteries, even maint. free ones vented? I believe that
along with the hydrogen gas a small amount of vaporized acid can escape
from the battery's vent allowing it to settle on nearby surfaces such as
the outside of the case.