I am thinking about replacing the original 12V battery in my 2012 Volt. My dealer quote a price of $262.77 plus tax from the parts department and an undetermined cost from installation by the service department. This means the cost will be well above $300. This seems to me to a very high price. What is puzzling is that I am apparently the first customer that has even asked about 12V battery replacement. This dealer, who sold me my Volt back in October 2011, who has sold a bunch of Volts has never replaced a 12V battery in a Volt.