Electrical question --> Battery
On hot days such as this day today in perth, my car has a hard time turning over to start, and today was no exception. It was the worst its ever been, almost left me stranded.
This dosent happen unless ive had the Ac running.
I took some measurements..
High beams on, radio on, a/c on, and both radiator fans on at full blast. I've got 12.8V at the battery at idle, goes upto around 13.something depending on RPMs as soon as you accelerate.
With nothing on and just idling its got 13.8V at the battery at idle.
Is it most likley time to buy a new battery, this one is a few years old, or is my alternator suspect?