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I had a dynabatt on my car for a while, but it kept dying on me. I guess maybe with my fuel system and all the other stuff on my car it cant handle it?

Either way, right now Im looking for a good battery. I was told the optima's are good.

Whats the difference between yellow and red top versions?

Also, what is the gain from these batteries over a regular motorcraft battery?

Thanks
 

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YES, they're excellent batteries.

The redtop is more designed for a daily driver, while the yellowtop is a "deep cycle" for cars that sit for long periods. They also recommend the yellow if you have a big stereo.
 

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I run 4 amplifiers, 2 Rockford Power 400.4's, and 2 Rockford Power bd500.1's (running 2 12's in my backseat). I have an Optima Yellow Top, and it's the *only* battery that lasts for extended periods of time. My car sits in the garage for sometimes 2 weeks at a time, and cranks up every time.

Well worth it!
Brad
 
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