With freezing overnight temperatures expected this week, AAA reminds motorists that the extremely cold weather is tough on vehicles, especially your car battery. Traditionally, car batteries last an average of 37 months in a moderate climate, but now, the average life of a battery can be as little as 2 years because of the large amount of power required by the average ‘modern’ car and driver, according to AAA Tidewater Virginia Roadside Assistance Program.