My battery and alternator are less than a year old and as of late my battery died twice randomly. Once I went into a store for 30 minutes and came out and it was dead and it happened again today. I went into a store for 10 minutes and came out and it was dead. I needed to get a jump and stay connected to the donor vehicle for almost 7 minutes. I checked the voltage of the alternator and battery and both are fine. What could be the issue???? Someone told me that it could be a bad starter solenoid that is draining the battery.
Any help is much appreciated.