5 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHFlat battery on 718 GT4 - Page 1 - Boxster/Cayman - PistonHeads UK
Leading reported evidence
Use vehicles
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
I have 3 CTEK chargers that look after various seldom-used vehicles.
Flat battery on 718 GT4 - Page 1 - Boxster/Cayman - PistonHeads UK
Read full discussion summary
Leading evidence: 'Use vehicles' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace any lead-acid 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.
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
Gut feel is that you'll get away with it, but I'd recommend replacing any lead-acid battery that has run properly flat.
Flat battery on 718 GT4 - Page 1 - Boxster/Cayman - PistonHeads UK
Run properly flat
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 · Original poster
Gut feel is that you'll get away with it, but I'd recommend replacing any lead-acid battery that has run properly flat.
Flat battery on 718 GT4 - 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.
5 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: 20261026T133652Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Looking for a little help.
My 718 GT4 has been parked in the garage from September 2021. I have a CTEK charger hardwired to the battery with the connection threaded through the wheel well - bonnet, boot and doors are all locked.
Anyway - I have sort of forgotten about the car for the last 3 months and the battery is now flat - the doors will not open when pushing the button on the key.
Have connected the CTEK to the flying lead from the battery tonight - do you think this will be enough to bring some charge into the battery to allow me to open and start it? I have the charger set in 'Normal' mode.
Thanks
Olderandwiser22 said:
Looking for a little help.
My 718 GT4 has been parked in the garage from September 2021. I have a CTEK charger hardwired to the battery with the connection threaded through the wheel well - bonnet, boot and doors are all locked.
Anyway - I have sort of forgotten about the car for the last 3 months and the battery is now flat - the doors will not open when pushing the button on the key.
Have connected the CTEK to the flying lead from the battery tonight - do you think this will be enough to bring some charge into the battery to allow me to open and start it? I have the charger set in 'Normal' mode.
Thanks
If the CTEK seems happy, you'll most likely get away with it. If the CTEK throws up a fault, switch its setting to "recond" mode. If it throws up a fault after that, try it at least twice more from a standing start in recond mode. This has got cars going for me when in any other situation I would have considered the battery well beyond help - they hate spending any time without charge. You'll need a up to a day of trickle charging.
Gut feel is that you'll get away with it, but I'd recommend replacing any lead-acid battery that has run properly flat. I have 3 CTEK chargers that look after various seldom-used vehicles. My 981 GT4 is never left for more than a couple of weeks without being used or connected to a CTEK. The battery was in my mind past its best when I bought the car in 2018. Have not had any issues so far.
Fingers crossed for you.
Liam
LiamH66 said:
If the CTEK seems happy, you'll most likely get away with it. If the CTEK throws up a fault, switch its setting to "recond" mode. If it throws up a fault after that, try it at least twice more from a standing start in recond mode. This has got cars going for me when in any other situation I would have considered the battery well beyond help - they hate spending any time without charge. You'll need a up to a day of trickle charging.
Gut feel is that you'll get away with it, but I'd recommend replacing any lead-acid battery that has run properly flat. I have 3 CTEK chargers that look after various seldom-used vehicles. My 981 GT4 is never left for more than a couple of weeks without being used or connected to a CTEK. The battery was in my mind past its best when I bought the car in 2018. Have not had any issues so far.
Fingers crossed for you.
Liam
Many thanks for your detailed response. I have a funny feeling it will have thrown a fault code when I check this morning.
LiamH66 said:
If the CTEK seems happy, you'll most likely get away with it. If the CTEK throws up a fault, switch its setting to "recond" mode. If it throws up a fault after that, try it at least twice more from a standing start in recond mode. This has got cars going for me when in any other situation I would have considered the battery well beyond help - they hate spending any time without charge. You'll need a up to a day of trickle charging.
Gut feel is that you'll get away with it, but I'd recommend replacing any lead-acid battery that has run properly flat. I have 3 CTEK chargers that look after various seldom-used vehicles. My 981 GT4 is never left for more than a couple of weeks without being used or connected to a CTEK. The battery was in my mind past its best when I bought the car in 2018. Have not had any issues so far.
Fingers crossed for you.
Liam
Your advice worked perfectly. The car kicked into life this afternoon - many thanks.
It is sitting on the charger now until its first run out this year.
Olderandwiser22 said:
Your advice worked perfectly. The car kicked into life this afternoon - many thanks.
It is sitting on the charger now until its first run out this year.
Happy days, my pleasure!
My 981 GT4 is waiting until week after next to get road tyres back on (track day tyres still on from September track day), then another week for 6 year service and fresh MOT, and then it will be back out as well. Thanks for the reminder to make sure the battery is fully charged!
Liam
This is a source reference. Confirm exact model applicability in the original material.
