Back again with another issue!! Was in Ford (for something else yesterday) and had a battery reading of 12.18v - checked it this morning and it was 12.03 v.
Started the car and the needles twitched before starting - at normal idle the voltage started creeping up, but as soon as I put heaters, radio , lights on the voltage started dropping like crazy - went to about 10 (and dropping) before battery warning light came on on the dash
I switched everything off and the voltage crept back up to about 12 (with just lights on) Since it was just me, couldnt really measure it as fast idle
Looks like battery is not holding its charge fully - or could be an alternator issue?