How long is the vehicle sitting between during the times that the battery is discharged. If the vehicle sits for long periods of time, normal electrical loads(parasitic) can discharge the battery. Looking at your mileage versus the age of the vehicle, it doesn't appear that may be a problem, but it could. If it is driven regularly, but is still discharged at times, it could have a parasitic load that is excessive, causing the battery to drain more rapid. Have you had the alternator charge rate check as yet, do this and report the readings.
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Saturday, January 29th, 2011 AT 5:42 AM