Battery Issues
#1
Instructor
Thread Starter
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
what's up? didn't drive the car for 3 weeks and had to get a jump. after jump found out battery was dead. got a new battery and dropped it at detailer, and it died again after 5 days of in and out of garage driving. mechanic friend thinks it's something "drawing" off battery. any suggestions before I drop it at the dealer? also picking up a trickle charger to avoid future mishaps.
#4
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
My '06 had a problem with a short in an alternator cable whereby the battery wasn't being charged properly, according to my dealer this is not uncommon.
I had similar symptoms to yours but the dealer caught the alternator problem and repaired it under warranty.
I had similar symptoms to yours but the dealer caught the alternator problem and repaired it under warranty.
#6
Burning Brakes
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
in addition to the advice about the battery maintainter make sure you lock your car every time you leave it. Just turning off the ignition leaves a lot of the power on and it will continue to drain your battery pretty quickly.
my dealer advised me when I bought my 08 997S that if I don't intend to drive more than 7,000 miles per year I NEED to get a battery maintainer.
my dealer advised me when I bought my 08 997S that if I don't intend to drive more than 7,000 miles per year I NEED to get a battery maintainer.
#7
Instructor
Join Date: Nov 2009
Location: Torrance (310), CA
Posts: 157
Likes: 0
Received 0 Likes
on
0 Posts
Trending Topics
#8
Instructor
Join Date: Mar 2009
Location: Bay Area, California
Posts: 103
Likes: 0
Received 0 Likes
on
0 Posts
#9
Nordschleife Master
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
A battery maintainer is a controlled charger with circuitry to float the battery once charged, without overcharging. The OEM products do that, as well as CTek and BatteryTender.
#11
Instructor
Join Date: Nov 2009
Location: Torrance (310), CA
Posts: 157
Likes: 0
Received 0 Likes
on
0 Posts
#13
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
also: check out the Ctek website. They make the battery maintainer for Porsche and others.
http://www.ctek.com/EN-US/Default.aspx
http://www.ctek.com/EN-US/Default.aspx
#14
Poseur
Rennlist Member
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Keep in mind that today's electronically heavy automobiles place an extraordinary demand upon the batteries. Even though I drive my car quite a bit I'm starting to notice some sluggishness in the cranking of my engine. And my environment is as benign as it is--it never gets that cold. My personal test for checking the charge within the car is sort of odd, but worth sharing.
When I first turn the key, I turn it to just short of cranking, so that I can read my oil level (997.1 engine, obviously) but during that 6 second wait I press the SPORT button. When I then go to crank the engine on, sometimes that SPORT button light goes out while doing the cranking. I then have to engage it again once the engine is running. When the battery has a full charge and plenty to spare, those sorts of things should stay as you leave them--and the cranking shouldn't cause them to shut off.
When I first turn the key, I turn it to just short of cranking, so that I can read my oil level (997.1 engine, obviously) but during that 6 second wait I press the SPORT button. When I then go to crank the engine on, sometimes that SPORT button light goes out while doing the cranking. I then have to engage it again once the engine is running. When the battery has a full charge and plenty to spare, those sorts of things should stay as you leave them--and the cranking shouldn't cause them to shut off.
#15
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Ditto - also my Durametric unit will show fault codes for sensors like passenger seat airbag relating to voltage drops below threshold. Another handy use for that Durametric - a battery condition monitor!