The price of a lithium-ion battery pack in electric cars has plummeted as their production volume has become higher. Besides, the development of more cost-effective options to manufacture the battery has also contributed to the price drop. In 2010, when the electric cars were first introduced to the market, their batteries cost about USD 1,000 per kilowatt-hour (kWh). Since then, lithium-ion battery prices have decreased by 87% to USD 156/kWh over the past decade, according to an annual report of Bloomberg New Energy Finance released in December 2019. And the research service previously forecast the prices would plunge to as little as USD 73/kWh by 2030. As their prices decrease, carmakers have built an infrastructure to add more battery capacity to their models, which enables far more economical cars that house a battery with improved capacity to be manufactured.