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Porsche Club GB

Battery Drain

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

Discussion summary

YOUR RESEARCHBattery Drain

Leading reported evidence

Test battery was not

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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 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

The car at the time of testing the battery was not running, but the front trunk was open to gain access to the battery and the drivers window down and key in the ignition.

Battery Drain
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Leading evidence: 'Test battery was not' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Test battery was not' (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.

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

Compare 2 other evidence results

Test conditions are important

Suggestion or failed attempt

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 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

I think the test conditions are important .

Battery Drain

Test equipment so

Suggestion or failed attempt

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 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

I don't have access to any testing equipment so before I ask my indie to investigate, is it normal for the battery to go flat in two weeks?

Battery Drain
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.

Test battery was not

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

The car at the time of testing the battery was not running, but the front trunk was open to gain access to the battery and the drivers window down and key in the ignition.

Battery Drain

Test conditions are important

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

I think the test conditions are important .

Battery Drain

Test equipment so

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

I don't have access to any testing equipment so before I ask my indie to investigate, is it normal for the battery to go flat in two weeks?

Battery Drain
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.

  • Porsche Club GB: 1 discussions

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

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

Outcome without a verified action link

Thank you so much for that information, it has solved my problem.

No unique explicit quoted action; no causal link assigned

Generation: 20261026T213932Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I have just had a new battery fitted to my 996 Targa, but when the battery was checked to make sure everything was ok the readings said that I have a battery drain of -1.3amps, is this ok and a normal reading? The car at the time of testing the battery was not running, but the front trunk was open to gain access to the battery and the drivers window down and key in the ignition. it may be normal but it just seemed a little high to me. kind regards Andy

POST 2Original post

That sounds way too high to me Andy. A rogue radio/PCM system or tracker maybe? For starters I'd try pulling fuses while monitoring the current drain to see if you can track down the source. Jeff

POST 3Original post

Yes, 1.3A is a bit high. For the first 5 minutes of the test it should be less than 1A. Best bet is to follow the procedure in this post: https://www.porscheclubgb.com/forum/FindPost/964798

POST 4 / ORIGINAL POSTEROriginal post

Thank you for the reply’s, it is most appreciate. Kind regards Andy

POST 5Original post

I think the test conditions are important . Lock down the latch on the bonnet with a screwdriver, lock the car and wait 5 mins. You should see something about 0.25A or better. You man need to calibrate your gauge too. Don‘t just check it with the car unlocked and say ignition on. kr Lee

POST 6Original post

I amp ish sounds like a 12 w lamp on. Have you looked through the vent in the engine cover to see if the light is on? I hade a drain issue, and found out that either the bonnet switch or the engine cover switch can turn this light on and new switches are expensive. I took my engine bay lamp out

POST 7 / ORIGINAL POSTEROriginal post

Thank you so much for that information, it has solved my problem. When I had the new battery fitted the RAC man took out the bulb in the front trunk and then measured the current drain, not realising that the trunk catch also operated the light in the engine bay. (Giving the reading of a current drain) Thank you so much, this has saved me a lot of trouble. Kind regards Andy

POST 8Original post

Hi, I don't have access to any testing equipment so before I ask my indie to investigate, is it normal for the battery to go flat in two weeks? I have a 2002 C4S with a brand new Bosch battery, yet after circ 2 weeks of not using the car, it won't start, dead. I had a BMW Z3M Coupe that would start on the button after a month+ of no use. Thanks

POST 9Original post

I have a 2002 C4, 2 weeks locked with the alarm on is about right before the battery is discharged, nothing else wrong, just charge it and it will be fine, is it kept in a locked garage ? if so then either don’t lock it or just lock the door directly with the key rather than the remote - then the Alarm is not initiated.

POST 10Original post

ok thanks, will buy a portable battery jump starter. Unfortunately I cannot trickle charge the battery where it's stored in an underground garage.

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