BATTERY LIFESPAN?

Billygoat · Apr 22, 2008

Could anyone advise what is the lifespan of a 997 Battery. My late 2004 997 C2 Tip has a completley flat battery. [

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I have tried to recharge with no joy. Should I be buying a 680CCA or 760CCA (Cold Cranking). The car has a lot of technology and is not be used very much (1600 miles in the last 6 months) so I guess the battery is being drained when not in use. In addition I have bought a trickle charger.

Any thoughts on what make & type I should buy?

Maybe the solution is to drive the car a bit more !!!![

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pwebb · Apr 22, 2008

Snap! My late 04 S had the same dead battery last week. Porsche Assistance could not breathe any life into it at all and so a new one was the only answer. Mine is used daily so not caused through draining/lack of use.
Maybe they have a 42 month self destruct device...

Definitely use the car more - the solution to most problems!

Peter

Mark Elder · Apr 22, 2008

4 years is about it for the technology in a battery, although you normally get some warning they are on there way out - eg you find it won't start the car in the same lively way it used to, but does just about manage it. Then one day you have to charge it to get car to start, which is OK until the frost comes and you have to charge it again. Unusual for them to go from perfect to "unchargeable" in one drive (or non-drive).

snarf · Apr 22, 2008

My runaround Toyota is nine years old; used mainly for short journeys, stands outside all winter and still starts briskly on the original battery. As Top Gear demonstrated Toyotas are hard to kill.

Geoff_Fields · Apr 22, 2008

The most common cause of Porsche battery failure is probably constant drain from on-board systems and lack of use. My last 911 got through 4 batteries in 12 years, yet my daily drivers (Citroen diesels) never needed a replacement even when subjected to long periods of Alpine weather.
Here is a link to some battery info: http://www.topbuzz.co.uk/info/car_battery/car_battery.htm

Ian Gilmour · Apr 22, 2008

I've just replaced the battery on my Nov 04 Carrera S. PC wanted around £150 for a Porsche battery and £240 if they fitted it for me so I bought a Varta one from our local specialist for £97. Slightly worried about any extended warranty claims on electrical items as I no longer have a Porsche battery but I'm prepared to argue the toss should it come to that rather than pay rip-off PC prices.