E30 Zone

hi

a couple of things really

what is the correct voltage for a battery when the car is ideling is 13.64 to low? i was always under the impression it should be 14 or above

what would cause a new battery (which has gone flat and been charged up 3 or more times) to drain itself when not attached to anything say from 12.07 to 12.02 in an hour?

any help would be appreciated

cheers

13.64 seems fine to me,did you fit the new battery to your car and then have to charge it? as a new battery shouldnt need charged,if the car has drained the battery that would explain why its dropping voltage.

no fitted a new battery months ago

left it off the road for a while so the battery was compleatly dead jumped it moved it jumped it moved it etc but never enough to let the battery charge.

went out for 15 miles today came back took the battery out and is dropping as above?

Modern batteries don't take kindly to being fully discharged.
Have you checked for excessive battery drain when the car is switched off?