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MarkC4S
Trainee


Joined: 05 Jul 2016
Posts: 89



PostPosted: Mon Nov 13, 2017 9:47 pm    Post subject: Recommended Battery Reply with quote

Good evening,

My C4S would not start today; I believe the problem is low battery power (I was in the process of trying to give it a run out). The car is 2008 and I have no record of last battery change. I am going to get RAC out tomorrow morning to get her going and will ask them to test battery health.

I know that they make a high margin selling over-priced batteries at homestarts, so if their test does indicate a weak/old or even faulty battery I am inclined to buy and fit my own.

Can anybody tell me what batteries Porsche recommend or use OEM? Would there be anything I would need to look out for doing a DIY battery change?

Thanks
 
  
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toffeeman
Monza


Joined: 05 Mar 2009
Posts: 151



PostPosted: Tue Nov 14, 2017 12:16 am    Post subject: Reply with quote

I’m not sure of the specifics but I believe that there is a cable that is connected to the battery which corrodes over time which can cause slow starting/turning over issues. I think it’s the earth cable but someone more clued up than me will be along with the specifics shortly. It might be worth changing this cable as well.
 
  
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T8
General
General


Joined: 29 Jun 2010
Posts: 12893
Location: Kent


PostPosted: Tue Nov 14, 2017 12:50 am    Post subject: Reply with quote

This question has been asked many times before.

This thread is one that best summarises the usual discussion/answer and also gives supplier recommendations.

Click here ==> the answer is Bosch

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_________________
2007 Guards Red 997 Turbo Tiptronic
ex 2004 Polar Silver 996T Tiptronic
ex 2002 Seal Grey 996.2 C4 Tiptronic
ex 1978 Silver 924 Manual
 
  
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Thefinn
Spa-Francorchamps


Joined: 11 Jun 2014
Posts: 254
Location: Essex


PostPosted: Tue Nov 14, 2017 5:37 am    Post subject: Reply with quote

try car part 4 less you will get Bosch s5 110 for £123 using the November code then buy a ctek trickle charger to plug your car in when its standing to stop it happening again, these chargers can also re-condition old batteries
_________________
997.1 C4S CAB
 
  
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MarkC4S
Trainee


Joined: 05 Jul 2016
Posts: 89



PostPosted: Tue Nov 14, 2017 8:28 am    Post subject: Reply with quote

Thanks for all of the helpful advice.

I will go with the silver Bosch battery which I can get for £105 delivered (Tayna or ABS Batteries).

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MarkC4S
Trainee


Joined: 05 Jul 2016
Posts: 89



PostPosted: Tue Nov 14, 2017 9:36 pm    Post subject: Reply with quote

Turned out the battery (Porsche OEM) was in good condition and the alternator etc was fine. No power drains, so just not using it enough.

I did find some water sitting in the battery tray which can't be right, no idea where it is getting in. Is this a common problem by any chance?
 
  
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pcat
Monza


Joined: 16 Oct 2013
Posts: 211



PostPosted: Wed Nov 15, 2017 7:47 am    Post subject: Reply with quote

The porsche Moll batteries are notoriously *****. After 3 years they dont hold charge well at all, even when recovered with an intelligent charger
 
  
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MarkC4S
Trainee


Joined: 05 Jul 2016
Posts: 89



PostPosted: Wed Nov 15, 2017 9:25 am    Post subject: Reply with quote

pcat wrote:
The porsche Moll batteries are notoriously *****. After 3 years they dont hold charge well at all, even when recovered with an intelligent charger


Thanks, one more strike then and it is out!
 
  
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MarkC4S
Trainee


Joined: 05 Jul 2016
Posts: 89



PostPosted: Wed Nov 15, 2017 4:59 pm    Post subject: Reply with quote

Discovered that all 4 bulkhead drain holes where bunged up with crud. Now all cleaned out, just in time for the winter.
 
  
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