New member with similar issue here. My car started fine when I was running it regularly (about once a week). After a little more than a month of not starting it , the battery (which is a few months old) is completely drained. I tried jumping the car,letting it charge for about 5 minutes before attempting to start it. Having it hooked up to another running car makes a difference but the car still doesnt start. Does it need a longer charge time? Is it normal for batteries to drain after a month?