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

Post Reply
 
LinkBack Thread Tools Display Modes
Old 08-17-2019, 07:17 AM   #1
Registered User
 
Join Date: Dec 2009
Location: Orange County, CA
Posts: 1,981
Quote:
Originally Posted by Starter986 View Post
I would remove the battery... hook up another battery.. start the car... remove that battery (with the car running)... hook up the dead battery... and let it "charge" for about 15 minutes.

I'd then shut off the car... hook up the battery charger... and the battery would register just enough juice to allow the charger to do the job. Has worked every single time I've encountered that problem.
I would not feel comfortable disconnecting the battery while the engine running as you may damage their sensitive electronic systems and may be more expensive than a new battery..
Gilles is offline   Reply With Quote
Old 08-17-2019, 08:20 AM   #2
2003 S, Arctic Silver, M6
 
paulofto's Avatar
 
Join Date: Oct 2014
Location: Winnipeg, MB, Canada
Posts: 1,346
Garage
I had a dead battery a year ago after leaving the lights on. It was only 2 years old at the time. I connected my Schumacher maintainer and it charged after a few hours. Fired right up and I haven't had an issue since. BTW, if I'm not going to drive for a few days, I connect the maintainer. And of course it is always connected when the car hibernates over the winter.
paulofto is offline   Reply With Quote
Old 08-17-2019, 10:29 AM   #3
Registered User
 
Join Date: Mar 2019
Location: Midwest
Posts: 84
thanks, all, MUCH appreciate the advice. I found a decent slow charger to borrow, so I might as well give that a shot.

Unsure how old it is - bought car used - so I shall check on that as well, and replace if needed.
__________________
2002 Porsche Boxster
wwjd is offline   Reply With Quote
Old 08-17-2019, 12:02 PM   #4
A Porsche Guy
 
1PorscheBoxster986's Avatar
 
Join Date: Jun 2019
Location: 0°
Posts: 135
Quote:
Originally Posted by wwjd View Post
thanks, all, MUCH appreciate the advice. I found a decent slow charger to borrow, so I might as well give that a shot.

Unsure how old it is - bought car used - so I shall check on that as well, and replace if needed.
There should be a sticker on your battery that shows when the battery was manufacturer. It can say the month and year (April 2014) or some will have digit code like tires (example: 4018) which means it was manufactured during 40th week of 2018. If your battery is more than 5 years old, it might be time to replace it after this incident.
1PorscheBoxster986 is offline   Reply With Quote
Old 08-17-2019, 05:08 PM   #5
1997 Tip, 2018 Macan
 
rexcramer's Avatar
 
Join Date: Aug 2015
Location: Upland, CA
Posts: 1,338
Garage
Quote:
Originally Posted by Gilles View Post
I would not feel comfortable disconnecting the battery while the engine running as you may damage their sensitive electronic systems and may be more expensive than a new battery..
Ditto, that doesn't sound like a very good idea. Maybe try hooking the batteries up in parallel?
rexcramer is offline   Reply With Quote
Old 08-18-2019, 03:33 AM   #6
1998 Boxster Silver/Red
 
Join Date: Sep 2017
Location: 92262
Posts: 3,086
When the car is running... it's all alternator. When the car is running there is a slight charge delivered to the battery (preparing it for the next "start"). Remove the battery when the car is running and... voila. Car keeps running (assuming a properly functioning alternator).

What? A Porsche is the only car with sensative electronics? I've done it on my Edge, and the electronics on it are FAR more sensitive than a 98 Porsche.

Has worked for me since, um, the 70's.

Cheers!
__________________
1998 Porsche Boxster
Starter986 is offline   Reply With Quote
Post Reply



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 12:43 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page