Energizer Bunny wouldn't stand a chance.
 

My horse killed off it's thrid battery in six years. Went to start it for the first time in a week and it had no life at all. Had the battery checked and it had a dead cell. It's was still under warranty, so I got a pro-rate. As long a the battery is under warranty, it really doesn't matter to me. As a side note, I always notice increased performance when the battery is replaced. Go figure.

what battery did you get?

Autozone duralast seven year warranty.

Mine likes to eat alternators. Definitely always get the warranty.

I hear you. I'm on battery #5.

Is that one battery per mustang :D

Here you there. A couple months ago my alt. and battery died at the same time. Well the alt died and took the battery with it.

That's exactly what happened to me most recently. I think I've been through 4 alternators, and the last one took the battery with it. Although it was still the original battery, and it had a good 7 year run, it was time for a new one anyway.