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Old 04-19-2016, 12:34 PM   #15
mikefocke
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Join Date: Aug 2005
Location: Sanford NC
Posts: 2,533
Quote:
Originally Posted by lkchris View Post
Your Porsche interrupts power to the cigarette lighter when ignition is off ... hence these are of no use.
As JFP says for US versions though I'm not sure about models for overseas. I charged mine ('99 and '01S) with a Porsche branded cTek for 5 years through the lighter connection and it started normally every time even in conditions when I had to brush off 8" of snow from the car cover.

I switched from generic to AGM just for fun. It was in a US made era so my experience isn't helpful re the Optima quality.

BTW, the CCA specs for the TIP are more than the manual.
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