Have any of you tested your car battery voltage?
I'm always checking the volts on my 3 on the road bikes, with multimeter, they are usually around 12.7v, much less & I pop them on the optimate overnight.
Never bother with my cars 'cos car batteries seem to last forever, at least 10 years in my experience. Now, I checked my daughters 3 year old battery at 12.3v on her Suzuki Swift. Then my 2 year old battery at 12.09v on my Focus. This was done direct onto the battery with Multimeter. I know mine is fully charged having just driven it 800 miles. Also the stop/start thingy doesn't work unless the battery is fully charged.
Is this normal for car batteries to show so low? I'd have thought it'd be same as the bikes.