Electric-car battery costs: Tesla $190 per kwh for pack, GM $145 for cells

Lithium-ion cells and the battery packs that hold them are the single most costly part of modern electric cars. And how fast their costs will fall remains the defining factor in making those cars affordable for the mass market. GM made waves last fall when product chief Mark Reuss said the company will pay $145 per kilowatt-hour for the cells in… …read more