Help - my battery is draining

[mir1]

Left it 16:30 with Battery reading 12.57 on both checked next morning about 11:00 am (quite cold) and batteries now reading 9.60 !!!.

Will also look at the switch option.

[mir1]

Mechanic has now looked at all 3 sets of fuses and can't trace the drain. Don't know if thats logically possible . He's happy the batteries are OK. Next action will to be fit an isolator switch to the dash unless anybody got any other thoughts (probably outside the box). Will make my decision in the new Year.

[guysturg1]

clutching at straws but could the drain be coming from something like the air con compressor clutch or the glow plug relay going faulty as this would put quite a high drain on the batteries

[mir1]

Thanks for the info - will run it by Electrician