Hi Barber,
I have been chasing what I thought was a drain issue also, the same from the previous seller that a relatively new battery was fitted. After doing the “parasitic drain tests” with every locked up, alarm on etc (ammeter in series) I was only getting 40ma of drain which is normal.
Subsequent testing (and a bit of history digging) finds the battery rated at 580cca has only got approx 280cca capacity and had been run flat at least 8 times in the last 18 months. Very heavily sulphated battery. Now at the battery reconditioner hopefully can be resurrected for at least a year or so whilst I build the project.
Not saying yours is the same, but check for your parasitic drain and if the car checks out ok, check your alternator charge is good and then focus in on the battery.....you never know how it has been previously treated. Cheers Mark
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