How much have electric-car battery costs fallen? This much!

Lithium-ion cell and battery pack assembly for Nissan Leaf electric car in Sunderland, U.K., plantHigh costs of lithium-ion battery cells have been one of the main hindrances to large-scale electric-car adoption, as they typically lead to higher purchase prices for electric cars than comparable internal-combustion models. But electric-car battery prices are falling fast, according to one recent study. Global Trends in Renewable Energy, calls...