15 captured repliesPartial discussion capture · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBattery voltage Query?
Leading reported evidence
Check alternator charging rate 12.8-14volts max
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
that depends on cranking could drop to as low as 10volts.best thing to do no diy messing about get the battery bench charged off the car then if it takes the charge ,hydrometer to check the cells ,load test the battery if all is fine check the alternator charging rate 12.8-14volts max and then finally a current drain check and the draw should be no more than 0.06 amps
Leading evidence: 'Check alternator charging rate 12.8-14volts max' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check alternator charging rate 12.8-14volts max' (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
sorry mate, would check but car is under a cover until the weekend with probably another flat battery and I aint home till late !
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
that depends on cranking could drop to as low as 10volts.best thing to do no diy messing about get the battery bench charged off the car then if it takes the charge ,hydrometer to check the cells ,load test the battery if all is fine check the alternator charging rate 12.8-14volts max and then finally a current drain check and the draw should be no more than 0.06 amps
Check unless someone can, i'll email sid the mechanic
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 below 12v isnt good as shouldnt the battery warning light come on below that stage when you eventually fire up the car, but will check unless someone can, I'll email sid the mechanic to advise if he can !
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
I might need to replace my warrantied battery, worth a shot anyway!!!!
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Check alternator charging rate 12.8-14volts max
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
that depends on cranking could drop to as low as 10volts.best thing to do no diy messing about get the battery bench charged off the car then if it takes the charge ,hydrometer to check the cells ,load test the battery if all is fine check the alternator charging rate 12.8-14volts max and then finally a current drain check and the draw should be no more than 0.06 amps
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
that depends on cranking could drop to as low as 10volts.best thing to do no diy messing about get the battery bench charged off the car then if it takes the charge ,hydrometer to check the cells ,load test the battery if all is fine check the alternator charging rate 12.8-14volts max and then finally a current drain check and the draw should be no more than 0.06 amps
Check unless someone can, i'll email sid the mechanic
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
but below 12v isnt good as shouldnt the battery warning light come on below that stage when you eventually fire up the car, but will check unless someone can, I'll email sid the mechanic to advise if he can !
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
that depends on cranking could drop to as low as 10volts.best thing to do no diy messing about get the battery bench charged off the car then if it takes the charge ,hydrometer to check the cells ,load test the battery if all is fine check the alternator charging rate 12.8-14volts max and then finally a current drain check and the draw should be no more than 0.06 amps
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.
15 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 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
It is on charge at the moment to get it back to normal.
Following on from my 'poor cranking' post, and the number of 'failed to start' posts over the internet forums at the moment. Does anyone know what the correct battery voltage at ignition position 1 (i.e. not started)? I'm showing 11-11.5v which possible means I might have a battery cell on its way out, considering all batteries nowadays aren't necessarily 12v, closer to 13.8v.
Damian
Migration info. Legacy thread was 106182
sorry mate, would check but car is under a cover until the weekend with probably another flat battery and I aint home till late !
but below 12v isnt good as shouldnt the battery warning light come on below that stage when you eventually fire up the car, but will check unless someone can, I'll email sid the mechanic to advise if he can !
regards
Migration info. Legacy thread was 106364
all 12v car batteries are 12v .if your battery is 13.8v without the engine running you have got some big problems
Migration info. Legacy thread was 106365
that depends on cranking could drop to as low as 10volts.best thing to do no diy messing about get the battery bench charged off the car then if it takes the charge ,hydrometer to check the cells ,load test the battery if all is fine check the alternator charging rate 12.8-14volts max and then finally a current drain check and the draw should be no more than 0.06 amps
Migration info. Legacy thread was 106375
I just bought a brand spanking new battery for my motorhome, and when I connected it up (before starting the engine) my very accurate battery condition meter showed 13.4 v (and 14.4 v for my fully charged leisure battery).
So I'm not so sure the precisely 12v theory is correct? :?
Migration info. Legacy thread was 106380
ok, just adid a quick test. Did not have time to get a meter out so relying on the cars.
Keys in and turn on, meter reads about 11.8 volts
Turn key (engine cranks) drops to 10.2 volts
Engine running shows 14.1
obviously there are no 0.1 dividers and I am assuming that teh scale is linear. Hope this helps.
Migration info. Legacy thread was 106539
Mine had started to drop a bit lately, but then I haven't been using it that much. It is on charge at the moment to get it back to normal.
Migration info. Legacy thread was 106544
About 5 mins after I drove away with the lights on it dropped back to a tad over 12v which is what I would expect. When I arrived at my destination (not many miles from So Poo) after switching of I turned the key back on and it was almost perfectly settled on the 12v line.
Migration info. Legacy thread was 106636
A nominal 12V battery should read more than 12V when charged.
I can't remember if it is supposed to be 12.8 or 13.8V.
When I turn the ignition on in my car it always shows over 13V on the guage. But the guages in the car are only an indication.
Once you start the car, depending on the weather it will sometimes drop down to around 10 after starting. The windcreen wipers will go slowly. After about 10-30 secs the volts will come back up again.
The alternator has some sort of clutch arrangement I think, so that it can be switched out. You can hear when it switches in.
I have had the same behaviour on 2 cars, although no-one else ever seems to have noticed it.
Anyway, the point being that once started, wait for a minute to check what the guage says.
Migration info. Legacy thread was 106662
Keys in and turn on, meter reads just below 12 voltsTurn key (engine cranks) drops to between 10 and 11 voltsEngine running shows just below 14 volts
Migration info. Legacy thread was 106895
