Rennlist

First Post: Time for a new battery?

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1 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHFirst Post: Time for a new battery?

Leading reported evidence

Replace cd changer

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
Well looked after by the previous owner so not much required, though so far I have replaced the CD changer with the Mr12volt Bluetooth unit, replaced the CD holder with the storage shelf unit, and refreshed the caliper Porsche logo decals.
Original post Read captured discussion
First Post: Time for a new battery?

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Leading evidence: 'Replace cd changer' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace cd changer' (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 · 1 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace cd holder

Performed · outcome unconfirmed

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
Well looked after by the previous owner so not much required, though so far I have replaced the CD changer with the Mr12volt Bluetooth unit, replaced the CD holder with the storage shelf unit, and refreshed the caliper Porsche logo decals.
Original post Read captured discussion
First Post: Time for a new battery?

Run dash voltmeter shows around 13.5v and shortly

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 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.

Suggestion · Original poster
When the car is running the dash voltmeter shows around 13.5v and shortly after turning off the engine it will read about 12.5v.
Original post Read captured discussion
First Post: Time for a new battery?

Frequently discussed actions (3)

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

Replace cd changer

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
Well looked after by the previous owner so not much required, though so far I have replaced the CD changer with the Mr12volt Bluetooth unit, replaced the CD holder with the storage shelf unit, and refreshed the caliper Porsche logo decals.
Original post Read captured discussion
First Post: Time for a new battery?

Replace cd holder

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
Well looked after by the previous owner so not much required, though so far I have replaced the CD changer with the Mr12volt Bluetooth unit, replaced the CD holder with the storage shelf unit, and refreshed the caliper Porsche logo decals.
Original post Read captured discussion
First Post: Time for a new battery?

Run dash voltmeter shows around 13.5v and shortly

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 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.

Suggestion · Original poster
When the car is running the dash voltmeter shows around 13.5v and shortly after turning off the engine it will read about 12.5v.
Original post Read captured discussion
First Post: Time for a new battery?

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.

1 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: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

Hi, My first post on here, a bit of background first; I purchased my 2003 C2 manual cabriolet about 6 weeks ago. Well looked after by the previous owner so not much required, though so far I have replaced the CD changer with the Mr12volt Bluetooth unit, replaced the CD holder with the storage shelf unit, and refreshed the caliper Porsche logo decals. Very happy so far. My question is about the battery. The previous owner kept it on a battery maintainer, but I have to keep it outside on the drive.l and don't have it connected to a charger/ maintainer. When the car is running the dash voltmeter shows around 13.5v and shortly after turning off the engine it will read about 12.5v. After a week the battery is often down to about 11.5v. I've not had any issues starting yet, but cranking is definitely a bit slower. Having checked the battery today it appears it's almost exactly 8 years old. My question is really whether this sounds normal or whether it sounds like it's due for replacement? I'm trying to avoid a situation where I drive somewhere then find I can't get back, I know batteries can fail quite suddenly!

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