What is the warranty on the 12v battery in a new electric car? I thought I saw somewhere that it was 12 months, but I could not find any info about it in the warranty book. The fact that it is not mentioned leads me to believe that it would be covered by the four year/50,000 factory warranty. Anyone know for sure? I'm particularly interested in the condition of a 12v battery in a 451 that's been sitting on a dealer's lot for two or three years. My car had been sitting on a dealer lot for two years and I've had it for two more years with no issues so far.