What is the life expectancy of the hybrid battery? What is it's replacement cost, including change out labor? Does the battery warranty prorate the replacement cost of the battery depending on it's age as most conventional battery warranties do or is it a full replacement cost up to the expiration date of the warranty? I'm a prospective buyer trying to do a life cycle economic assessment of the cost of owning a Fusion Hybrid for a period of 10 to 12 years with 120,000 to 150,000 mile. I'm anticipating that I'll need to replace the battery sometime during this period. My local Ford Dealer has not been helpful in answering these questions. Ron.