2002 Ford Focus • 150,000 miles

I am trying to replace my battery, but after detaching the cables I realized the battery extends on the bottom on the far and nearest side of the battery. The battery case has extentions to keep the battery in place, but I don't know how to get the battery out without unbolting the entire battery case. Do you know how I can get this battery out?
June 23, 2013.

Thre may be a clamp with one bolt going through the clamp at bottom in centeror at end whichever is showing. Remove the clamp and it should come out.

Jun 23, 2013.