Go Back   986 Forum - for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

Reply
 
LinkBack Thread Tools Display Modes
Old 12-12-2006, 04:35 PM   #1
Registered User
 
Join Date: Aug 2005
Location: nc
Posts: 31
Question Battery problem...

Hi there - didn't use my Boxster (2005 987) for a few weeks and then had trouble starting it, it only just cranked. So I thought, let's drive it for a while and recharge the battery.

Next day, same problem - could hardly start it. So I took the battery out and tried to recharge it. Unloaded voltage was only around 10.8. Charging seemed to go way to0 quickly, an hour or so. After charging it showed 12.9V unloaded, but dropped back to 10.8 over night.

I checked the fluid levels, and they're all above the min, and below the max. However, shining light through the cells and knocking the side of the battery, I saw gas bubble up in all but one of the cells. Suspicious I thought... dividing 12.9V by the 6 cells is 2.15V per cell, times 5 bubbly cells is exactly the 10.8V it dropped down to...

So I decided to unscrew the vents and have a look (wearing safety glasses, of course!). Again, the bubbly cells all looked the same inside. The quiet cell looked different. A picture is attached. The one on the left is a bubbly cell, with the plates covered in dark stuff, the odd one out has the plates clean.

It appears I have a bad cell. Is this fixable? Is this my fault for not driving for only a few weeks? (seems quick for it to go bad) Is this a warranty issue?

Many thanks!

Jan
__________________
_________________________________
2005 Boxster - Midnight Blue - Sand Beige
oranje is offline   Reply With Quote
Old 12-12-2006, 07:02 PM   #2
Porsche Purist
 
Paul's Avatar
 
Join Date: Aug 2003
Location: Wisconsin
Posts: 2,057
Garage
Probably a bad battery, sometimes the dealer will replace it under warranty, if not you can buy one elsewhere for less than $85.
__________________
1998 Boxster with 7.8 DME, 2005 3.6 liter/325 hp, Variocam Plus, 996 Instrument panel
2001 Boxster bought new. Installed used motor at 89k.
1987 924S . 2002 996TT. PST2
Owned and repaired Porsches since 1974. Have driven them all the way the Dr intended...
Paul is offline   Reply With Quote
Old 12-12-2006, 07:57 PM   #3
Registered User
 
Join Date: Sep 2005
Location: Minneapolis/St. Paul, Minnesota, USA
Posts: 3,308
Hi,

The Battery is sulphated. Unfortunately, not a warranty item according to a TSB. The problem was probably created when the Battery was discharged.

A total discharge is very bad for a Wet Cell Battery. Tests have indicated that a Battery loses at least 15% of it's ability to accept a charge with each discharge. This means that it doesn't take too many to render the Battery seriously compromised, or even useless...

Happy Motoring!... Jim'99
MNBoxster is offline   Reply With Quote
Old 12-16-2006, 11:15 AM   #4
Registered User
 
Join Date: Aug 2005
Location: nc
Posts: 31
thx

Thanks for the info.

Got a new DieHard battery at Sears, in case you need to know, it's the "48 size international". Has a little exhaust hose to get rid of kaboom gas.

Installed it and it fits perfectly and my baby starts up fine again. Cost $120 or so

Now I'll see if I can get anything back from the dealer... as a cell shouldn't die after 18 months of use in a warm weather area...
__________________
_________________________________
2005 Boxster - Midnight Blue - Sand Beige
oranje is offline   Reply With Quote
Old 12-16-2006, 12:37 PM   #5
Registered User
 
Brucelee's Avatar
 
Join Date: Jun 2004
Location: Des Moines, IA
Posts: 8,083
Smile

Costco, $52. Install it yourself.
__________________
Rich Belloff

Brucelee is offline   Reply With Quote
Old 12-16-2006, 12:47 PM   #6
bmussatti
Guest
 
Posts: n/a
Hi Oranje, you should read pages 10 and 11 of your Warranty Book. Pay particular attention to the area title; "YOUR RESPONSIBILITY FOR NORMAL VEHICLE USE". It states in here that you need to drive the car at least 6,000 miles per rolling 12 months. If not, they highly recommend using a battery maintainer.

So, I don't think the dealer will warranty your dead battery. Sorry.

Get a battery maintainer for about $55...or drive 'er more!!
  Reply With Quote
Old 12-16-2006, 12:50 PM   #7
Registered User
 
Join Date: Aug 2005
Location: nc
Posts: 31
hmmm

I'm ok with that rule... I've got 14,000 miles since August 2005. Was my daily driver until the weather changed and I felt sorry for her... so it seems that 2 weeks of not driving killed the battery.

I'll see what I can get.
__________________
_________________________________
2005 Boxster - Midnight Blue - Sand Beige
oranje is offline   Reply With Quote
Old 12-16-2006, 01:15 PM   #8
bmussatti
Guest
 
Posts: n/a
Hi Oranje, here is what you need my Boxster-loving-Porsche friend:

http://e-partssales.com/Merchant2/merchant.mvc?Screen=PROD&Store_Code=P&Product_Code=98061198100&Category_Code=987cc

Ask Santa for one!
  Reply With Quote
Old 12-16-2006, 02:22 PM   #9
Registered User
 
Brucelee's Avatar
 
Join Date: Jun 2004
Location: Des Moines, IA
Posts: 8,083
Smile

My local dealer will replace the battery under warranty IF the car has been driven at least 12K per year.
__________________
Rich Belloff

Brucelee is offline   Reply With Quote
Old 12-16-2006, 04:28 PM   #10
Registered User
 
Join Date: May 2006
Location: Toronto
Posts: 277
Quote:
Originally Posted by Brucelee
My local dealer will replace the battery under warranty IF the car has been driven at least 12K per year.
No such requirements for the Costco battery, I take it.
If I recall correctly, there's a 3 year free replacement on them.
wanna986 is offline   Reply With Quote
Old 12-16-2006, 05:38 PM   #11
Registered User
 
Brucelee's Avatar
 
Join Date: Jun 2004
Location: Des Moines, IA
Posts: 8,083
Smile

Quote:
Originally Posted by wanna986
No such requirements for the Costco battery, I take it.
If I recall correctly, there's a 3 year free replacement on them.
I believe you are correct.
__________________
Rich Belloff

Brucelee is offline   Reply With Quote
Reply


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 10:16 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page