Like? The only downfall I know to them is when to drain the battery completely dead is that they are dead for good. But that is what I have heard.
Than again. I have no problems with mine and I have a stereo system (subs, amp etc) in my truck. Which I have played for atleast 3 hours without cranking it back up. And everything was fine.
I have heard about Ford selling a marine style battery (maybe clubracergt1 will chime on this) but it is suppose to be a hellavu lot better than Optima.
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