I had 3 Die hards in six years, they, died HARD every two years. When the last one to died I took it back to Sears. The Kid at Sears wanted to test the batterys to see if any thing was wrong, I guess the ACID leaking out of the post and the bulge in the side was not enough of a clue there was something wrong.
After this, I got the RED TOPS and have never has any problems. Optimas (RED TOPS) are all I will use.