Biggfoot44
Active Member
- Joined
- Jul 6, 2019
- Messages
- 110
- Reaction score
- 42
- Points
- 28
- Location
- USA
- Vehicle Year
- 1994
- Make / Model
- Ranger 2wd
- Transmission
- Automatic
Disclaimer - This literally involves Daughter's '06 VW TDI Beatle , but the question involves general principles . ( And she previously had Ford SUV , and claims 50% driving privileges on the Ranger .)
With increasing frequency , it won't start because of low battery voltage . Battery installed 6/19 .
Since I work all the time , directed Wife to take it to Advanced Auto Parts for their free battery testing . The battery does well with the load testing , and alternator puts out plently of juice . BUT the problem persists .
This afternoon I had a window inbetween my Music Thing , and pulling out for evening shift , so I dabbled with some experementing .
Tested battery voltage before turning the key - 12.5 V . Started up , drove 15mi in 3rd , to keep rpms 3- 3.5k to maximive alternator output .
Parked and turned off , 12.65 V .
Now 7 hrs later , turned off , nothing left on, no cellphone chargers plugged in . 12.37 V .( @ 12.35 V will just barely turn over fast enough to start .
Is it Possible for a battery to be good for cranking load , but simultaneously be " Bad " for spontaneous voltage loss ?
With increasing frequency , it won't start because of low battery voltage . Battery installed 6/19 .
Since I work all the time , directed Wife to take it to Advanced Auto Parts for their free battery testing . The battery does well with the load testing , and alternator puts out plently of juice . BUT the problem persists .
This afternoon I had a window inbetween my Music Thing , and pulling out for evening shift , so I dabbled with some experementing .
Tested battery voltage before turning the key - 12.5 V . Started up , drove 15mi in 3rd , to keep rpms 3- 3.5k to maximive alternator output .
Parked and turned off , 12.65 V .
Now 7 hrs later , turned off , nothing left on, no cellphone chargers plugged in . 12.37 V .( @ 12.35 V will just barely turn over fast enough to start .
Is it Possible for a battery to be good for cranking load , but simultaneously be " Bad " for spontaneous voltage loss ?