How to test battery draw with digital multimeter for both cases when engine is on...

[Dinesh Desh]

...& when engine is off ? thank? How to test battery draw (car battery) with digital multimeter for both cases when engine is on & when engine is off (whether its off for 10 to 12 hours or its off for about a minute) ?

what should be the readings of a good battery & of a bad one ?

thank

 

[jimmymae2000]

Fully charged car battery is 12.8 volts and with engine running it is 14.5 or more if charging system is o.k.