jwdwight

I left my '06 C4 parked in the garage for three weeks while I was on a trip and when returned, the battery was deader than a door nail. Checked all interior lights and they were in the auto position and headlights were not left on. Car only has 7,400 miles. Any thoughts on why it would go dead? Haven't had any issues before this.

Likemystoppie?

We need to put a sticky on this board:


"If you own a 911, buy a car battery tender to maintain the battery"


This will eliminate this 'oh so often' thread to pop up.

Likemystoppie?

And yes, this is as common as birds poop.

OCBen

https://rennlist.com/forums/6412695-post9.html

Likemystoppie?

Make.
It.
A.
Sticky.

jwdwight

Ok.....so I get that it is a common problem but these cars can't sit for 2 to 3 weeks? What drains the battery?

OCBen - thanks for the public service announcement.

Edgy01

You answered your own question. You have 7400 miles on the car. And it's an 06. Batteries can't just sit,--they have to be recharged periodically. Porsche will honor a faulty battery but their criteria is something like 8000 miles,--a year,--minimum. Get the battery trickle charger or sell the car.

Philipangoo

Happened to me also, Porsche will replace your battery under warranty if you have driven it a certain defined amount. After 2 years my car had about 14k miles on it which was just barely enough to get a new battery. I have since then kept my battery maintainer plugged in at all times

My M3 has always done the same thing, it will die if I don't drive it for a few weeks. Yet I don't need to drive my chevy for like two full months and it will start up and drive fine. It must be a European car thing.

jwdwight

It must be a European thing!! I have parked my GMC Yukon for a couple months and it fires right up too.....oh well.

Does anybody have a recommendation for a trickle charger? Can I get one that plugs into the cigarette lighter so I don't have to get to the battery each time?

jcnesq

http://e-partssales.com/Merchant2/me...ory_Code=997cc

If you need a new battery (and no warranty) get an Interstate (H7 I think).

jcnesq

This charger may be better:

http://e-partssales.com/Merchant2/me...ory_Code=997cc

OCBen

This charger is cheaper (about $30) and works just as well, and lasts just as long:

https://rennlist.com/forums/997-foru...ml#post5679837


Oh, for the OP and anyone else reading this, do a simple search next time using "battery" (or whatever may happen to be your area of concern) as your keyword to retrieve the information you seek that's likely contained in this forum. To learn more about how to use the search function click on the FAQ hyperlink above.

abe

I think Porsche should have a built in automatic charger...so all you have to do is pull the extension cord and plug in the car.
abe

Likemystoppie?

That's probably b/c the batteries are better built then the car?!

Ha!!

ADias

Not true at all. Visit Corvette Forums and check for yourself. Modern cars have electronics running 24/7 and they use power. The Porsche in particular automatically activates its internal alarm system, which has infrared sources inside the cabin lit 24/7.

It also depends on pattern usage. Many sports cars are driven little and short distances, which are not sufficient to charge the battery and compensate for the discharge (high current) of successive starts.