Mechanics

JAGUAR VANDEN PLAS BATTERY PROBLEM

1997 Jaguar Vanden Plas • 86,000 miles

Battery is charged at 12.0 volts every time I try to start the car the battery discharges could this be the alternator is bad
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Soulman1
December 27, 2012.



12.2 volts or less means the battery is good but totally discharged. Charge it at a slow rate for at least an hour, then remeasure the voltage. It must be near 12.6 volts to be considered fully-charged. If that's what you find, measure the battery voltage again with the engine running. It must be between 13.75 and 14.75 volts.

Caradiodoc
Dec 28, 2012.