It would seem to me that if the same thing is happening with two different batteries, one old one new, then it isn't the battery.Quote:
Originally Posted by twr7cx
Its been my experience with my 2004 D2a, which I'ved had since new, that "13.9 to 14 volts with a peak of 14.1 a few times" is completely normal, unless it is charging a flatish batttery. I've never seen 14.8V (I have a dash mounted voltmeter) in my disco. Perhaps a fault in the alternator control circuitry.
So, if the brand new, fully charged battery discharged overnight then you must have a power leak somewhere. Perhaps in the dual battery controller or again in the alternator itself. If there's no leak, then the only thing I can think on is that there may be broken or loose connection between the battery and the starter motor.
If the voltmeter is reading 14V with the vehicle running, I think the squealing must be an unfortunate coincidence. My belt squeals only when I get dust on the belt having been off road. Get a hose and (gently) squirt the belt while the engine is running. If the squealing stops when you wet the belt, then its dust.
