See the link below for very informative research and Ontario Commitment and green House goals/initiative for EV/PHEV It is 48 page article , so read at your pleasure. http://www.plugndrive.ca/wp-content/uploads/2017/07/160159_ElectricVehicleReport_R001.pdf
The cost of battery for Volt to manufacturer was $ 145 per KW , so if we use same rate for 17KW battery , cost will be around $ 145 x 17=$ 2465/- Note that this is manufacturing cost , so when we all need replacement 8 to 10 years down the road , it will not be a lot to pay at that time.