CS Battery specs ?

old dude · #1 (**permalink**) 10-06-2007, 06:24 PM

Does anyone know the battery group number & cold crank amps for the CS battery? Can't find them in the owner's book.

See the November 07 issue of Consumer Reports for evaluations of batteries & tires. Worth a read.

Rainer · #2 (**permalink**) 10-06-2007, 10:22 PM

Did you take a look at your battery? Mine has the most important specs printed on it: 80A/hr; 380 Cranking Amps.

This means, that fully charged it should be able to deliver, for example, 10A for 8 hours, and it should provide 380A for 30 seconds at 0 degrees F before the voltage falls to 7.20 V.

mike in az · #3 (**permalink**) 10-06-2007, 11:17 PM

FWIW there are multiple specs for cranking amps. Hot cranking amps (abbreviated HCA) are measured at 80 degrees F, plain old cranking amps (abbreviated CA) are measured at 32 degrees F, and cold cranking amps (CCA) are measured at 0 degrees F. Something to check when looking at car batteries.

Car battery - Wikipedia, the free encyclopedia

**Santa Fe** · #4 (**permalink**) 10-06-2007, 11:31 PM

And you should be aware of this from your Owner's Manual:
"It is not possible to use the details on the battery case to determine a comparable battery that meets all the specific requirements of Porsche. Use only a battery that meets the specific requirements of your vehicle as a replacement. We recommend that you use an Orignal Porsche battery."

Rainer · #5 (**permalink**) 10-07-2007, 02:20 AM

Quote:

Originally Posted by mike in az

FWIW there are multiple specs for cranking amps. Hot cranking amps (abbreviated HCA) are measured at 80 degrees F, plain old cranking amps (abbreviated CA) are measured at 32 degrees F, and cold cranking amps (CCA) are measured at 0 degrees F. Something to check when looking at car batteries.

Car battery - Wikipedia, the free encyclopedia

I forgot to mention in my previous post that Moll, probably the best manufacturer for vehicle batteries in Germany, always - and only - indicates CCA (Cold Cranking Amps), even though they don't specifically label it as such.

German Porsche-related sites/clubs are full of lengthy and controversial comments on this issue (primarily due to the high unit price in Germany). Many drivers had great results using good batteries from other manufacturers and saved over 100 Euro.

I agree with Santa Fe's stance and would stick with the recommendation in the Porsche manual. You can't go wrong: (1) You avoid potential warranty issues, and (2) Moll batteries have been permanently rated extraordinarily high in various tests and Moll has just received for the 5th time the Porsche Supplier Award.

old dude · #6 (**permalink**) 10-07-2007, 05:30 PM

Quote:

Originally Posted by Rainer

I forgot to mention in my previous post that Moll, probably the best manufacturer for vehicle batteries in Germany, always - and only - indicates CCA (Cold Cranking Amps), even though they don't specifically label it as such.

German Porsche-related sites/clubs are full of lengthy and controversial comments on this issue (primarily due to the high unit price in Germany). Many drivers had great results using good batteries from other manufacturers and saved over 100 Euro.

I agree with Santa Fe's stance and would stick with the recommendation in the Porsche manual. You can't go wrong: (1) You avoid potential warranty issues, and (2) Moll batteries have been permanently rated extraordinarily high in various tests and Moll has just received for the 5th time the Porsche Supplier Award.

******
Thanks for all the info. I don't a battery now. I'm an information collector for possible future needs. The Cosumer Reports evaluation had me interrested based on the test results.