[hjkim550]

914,

IMO, I think your battery is shot. 6 volts after a full night of charge? I think your battery is as sulfonated as it gets.

So far as replacement battery goes... stay away from Porsche OEM..... it is overpriced and terrible. I think they wanted to charge me $120 for a replacement.

You can search this forum and you will find different opinions.... Duralast from Autozone (what I chose), Braille, Optima and Toolpants recommended a cheaper battery from Walmart. You will find that he is quite knowledgeable and he found a battery from Walmart for about $60 or so. I found his thread after I bought mine from Autozone for $85.

I will try to find his thread for you after I try to go to sleep.