You'll note the battery box has heat shields.

The latest battery has been in the car for about five years.

I like batteries down low so the CG will be lower.

It's in a very protected area and so far - 14 years - no rock chips or other damage noted.

Fwiw - easily seen from outside the car, but not real noticeable since it doesn't hang down too low and is hidden to an extent by the lower four bar.