i just got my camera! going shutter happy!

is there something wrong with my battery? should i change it?

Battery.jpg (http://www2.hawaii.edu/~lui/images/Car/acid2.jpg)
Battery2.jpg (http://www2.hawaii.edu/~lui/images/Car/battery.jpg)

and there looks like something was sprayed, but wiped down. I think i brought it in for an oil change and something happen, but i guess i didn't know about it until now.

what possibly could have happened?

YellowStuff.jpg (http://www2.hawaii.edu/~lui/images/Car/acid1.jpg)
YellowStuff2.jpg (http://www2.hawaii.edu/~lui/images/Car/airbox2.jpg)

thanks.

It's called corrosion. Just pour some coca-cola on it and scrub it with an old toothbrush.