How Long Does a Car Battery Last Without Running a Car?

January 27, 2012

Without being in a running car, a car battery can last almost indefinitely if it is in new storage. At the same time, they may also incur some damages, like leaks, and thus may give a problem when starting the car back up. However, if the battery is in a car which is not run much, the battery will last about six months to a year of intermittent stops and starts, given the stresses placed on the battery by heat and cold and by non-start conditions. Given the conditions of most cars and the weather, it is most likely that a battery will fail within the six months and that the year figure is at the very outside.