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Good point. The battery is 13.0V after dissipating the surface charge. Jim

13.5V Jim

Thanks guys. I think i will take it out for a drive, get it warmed up again, and then check the voltage with air on and fans turning. Rainy in Tucson today - will wait a day or so. Anyone else with a multimeter handy who could check voltage on their GT at the battery, with car running after a...

Howard: Unfortunately, it is 14.15 at idle after a long drive - never seen it at less than that. This is also born out by the dash voltmeter gauge which is always steady at 2 hashes right of center.

I have noticed that the voltmeter is always a line or two to the charge (right) side of center. I threw my multimeter on the battery while at idle and got 14.2 - 14.4 volts. Is this within spec? Same reading on the voltmeter and on the multimeter with a fully charged new battery. I want to make...

I suspect the battery had been poorly maintained. The GT was owned by a dealer friend who kept it in the showroom and rarely drove it. Fortunately, the white fluff junk you see was fairly dry and wiped right off. No trunk paint damage - all good now. BTW, when evaluating the explosion, i...

I know this topic has been explored before, but here goes. I recently acquired a 2006 GT with the stock Optima with GT logo (I presume it is the original, but not positive). Battery was low charge so i put it on Battery Tender Plus for 2 or 3 days (trickle charge) and Tender finally showed...