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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
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YOUR RESEARCHBattery charging/conditioning - Page 1 - Boxster/Cayman - PistonHeads UK
Leading reported evidence
Use cars
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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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 performed work without a confirmed outcome
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0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Battery charging/conditioning - Page 1 - Boxster/Cayman - PistonHeads UK
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Leading evidence: 'Use cars' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Use car once or twice a week' (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.
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
Car hasn't been used much over the last 4 / 5 weeks & when it has the lights / heater / rear heated screen etc has been on.
Battery charging/conditioning - Page 1 - Boxster/Cayman - PistonHeads UK
Use car once or twice a week
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
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Suggestion
But if you can't use the car once or twice a week, use a permanently connected battery tender to keep it topped up.
Battery charging/conditioning - Page 1 - Boxster/Cayman - PistonHeads UK
Use much i'm going
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
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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
It's not practical to keep it permanently connected to the CTEK for me so whilst it's not getting used much I'm going to put it on charge weekly.
Battery charging/conditioning - Page 1 - Boxster/Cayman - PistonHeads UK
Use permanently connected battery tender
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
But if you can't use the car once or twice a week, use a permanently connected battery tender to keep it topped up.
Battery charging/conditioning - Page 1 - Boxster/Cayman - PistonHeads UK
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.
3 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
PistonHeads: 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: 20261026T203514Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Has anybody had a battery problem with a 987 Gen 2 Boxster S?
I'm thinking of buying a conditioner to plug into the lighter socket.
How long does it take the battery to drain if the car is not used for a while?
Grateful for any advice.
I've had a couple of issues in the last week which I have attributed to battery problems on my 987.1.
Both windows decided to drop to the position that they normally go to when you release the hood drop lever, this happened when the car was parked on drive & I wouldn't have known about it unless I'd gone out to get something out of the garage. Car hasn't been used much over the last 4 / 5 weeks & when it has the lights / heater / rear heated screen etc has been on.
Booked car into OPC who couldn't find anything wrong. Battery had been replaced at start of this year under warranty. I connected it to a CTEK & it took 9 hours to bring to maintenance mode.
It's not practical to keep it permanently connected to the CTEK for me so whilst it's not getting used much I'm going to put it on charge weekly. Need to restore trust in it really as it's a bit disconcerting to come back to the car with the windows down!
Car batteries like to be fully charged all the time. They don't like to be run-down and recharged, run down and recharged. The battery's job is only to provide a few seconds of high current to start the car and its technology is very different from e.g. phone batteries.
The best battery conditioner is the alternator. But if you can't use the car once or twice a week, use a permanently connected battery tender to keep it topped up.
Another option is to buy a "deep cycle" battery made by the likes of Optima and available from Tayna. Optima Yellow Top costs about £200.
http://www.tayna.co.uk/Optima-Leisure-Batteries-S4...
Details of the Optima range here, and what the colours mean. Yellow is the one for lightly used cars.
http://www.youtube.com/watch?v=FaM7exZmzKY
This is a source reference. Confirm exact model applicability in the original material.
