fullymatted.
Back to search
Rennlist

Battery Replacement

Add to repair workspace
Open repair workspace
Original source
10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHBattery Replacement

Leading reported evidence

Install red optima battery

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Installed the Red Optima Battery after the stock one died...The installer had to do a little work

Battery Replacement
Read full discussion summary

Leading evidence: 'Install red optima battery' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install red optima battery' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.

Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.

Read captured replies

1 matching discussions · 10 captured posts examined · 0 partial discussions

Compare 1 other evidence results

Replace battery....have you

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context

Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.

Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

Anyone who has replaced a battery....have you replaced it with a OEM Porsche or an Optima or any other for that matter.

Battery Replacement
Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Install red optima battery

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed

Installed the Red Optima Battery after the stock one died...The installer had to do a little work

Battery Replacement

Replace battery....have you

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that performed work without a confirmed outcome
1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster

Anyone who has replaced a battery....have you replaced it with a OEM Porsche or an Optima or any other for that matter.

Battery Replacement
Coverage and how to read this overview

Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.

10 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

  • Rennlist: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T091508Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

My battery is failing in my 1999 996. Is this normal for only 4 years? I have read in other posts about the Optima batteries as a replacement for the OEM battery. Anyone who has replaced a battery....have you replaced it with a OEM Porsche or an Optima or any other for that matter. If the Optima is a good choice is there a good website for ordering one? Thank you

POST 2Original post

Optimas are more expensive than standars batteries, but are great for track (no sloshing of acid) and last for years. However, they are slightly odd shaped (due to internal construction) compared to standard batteries. There are also different models (red top, yellow top) and terminal configurations Nord Stern region, March 2003, pages 39-40 had an excellent article: "Boxster/996 Optima Battery Replacement, by Steve Grosekemper, Windblown Witness (San Diego Region). Gives every detail, mounting plate adapter, cables, etc. You can buy Optima batteries on line (although shipping is expensive due to weight) or you can buy them at your local Autozone. Good Luck

POST 3Original post

Here is my info.... Installed the Red Optima Battery after the stock one died...The installer had to do a little work The red bracket that you see had to be filed down so that the screw was able to go in place... also the existing cable wasn't long enough, a 17" or longer cable is needed. I believe the stock was around 14". He weighed the Porsche battery it was 51 pounds.. The optima is 38 pounds. Also the Optima batteries have a 7 year warranty, in the first 3 years if it dies that replace it at no charge, and then its prorated after for the remaining 4 years.... Also they are sealed! <img src="http://a8.cpimg.com/image/BA/71/18764218-fd9f-01800200-.jpg" alt=" - " /> <img src="http://a1.cpimg.com/image/B3/71/18764211-069a-02000180-R.jpg" alt=" - " />

POST 4Original post

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by 996 AERO: <strong>My battery is failing in my 1999 996. Is this normal for only 4 years? </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Seems to be normal. I am on my third battery in my early 99. The stock battery does require periodic topping of fluids.

POST 5Original post

</font><blockquote><font size="1" face="Verdana,Tahoma,Helvetica">quote:</font><hr /><font size="2" face="Verdana,Tahoma,Helvetica">Originally posted by ltc: <strong>Nord Stern region, March 2003, pages 39-40 had an excellent article: "Boxster/996 Optima Battery Replacement, by Steve Grosekemper, Windblown Witness (San Diego Region). Gives every detail, mounting plate adapter, cables, etc. </strong></font><hr /></blockquote><font size="2" face="Verdana,Tahoma,Helvetica">Lewis, can you scan and post the article? I checked both San Diego and Nord Stern websites and they don't have it posted. Karl

POST 6Original post

Great price...good reputation...easy do it yourself install... <a href="http://www.ibsa.com/estore/browse_category.asp?category%5Fid=423462&mscssid=THL66F5VN2B59JV9F9JBMUH 9P2V80CF4&js=1" target="_blank">http://www.ibsa.com/estore/browse_category.asp?category%5Fid=423462&mscssid=THL66F5VN2B59JV9F9JBMUH 9P2V80CF4&js=1</a>

POST 7Original post

Karl, Go to: <a href="http://nordstern.org/Newsletters" target="_blank">http://nordstern.org/Newsletters</a> and click on March 2003. It starts on page 39. Another approach is to remove the base that the battery sits on (4 bolts) and bolt the battery directly to it. I added an alunimum strap across the top for good measure. I used the smaller red top (75/35 I think) and did not need to extend the battery cable.

POST 8Original post

Sloth, You indicate in your post that the OEM battery requires topping off the fluids periodically. How often should this be done?

POST 9Original post

Thanks, Jim. Looks like a good project for the upcoming rainy Memorial Day weekend. Karl

POST 10Original post

I was just at Costco they have the Red Optima for $99...

This is a source reference. Confirm exact model applicability in the original material.