电池技术的快速发展对电动汽车更有利。 瑞银（UBS） 估计， 到明年， 拥有一辆电动汽车的总成本将与燃油汽车持平——虽然电动车制造商仍然会亏钱。 瑞银乐观地预测， 到2025年， 电动汽车将占全球汽车销量的14%。 其他机构的预测更加谨慎， 但也都匆忙上调了预期， 因为电池成本降低、 性能提升——每千瓦时的成本己经从2010年的1000美元降至今天的130至200美元。
The rapid development of battery technology is more favorable for electric vehicles. UBS estimates that the total cost of owning an electric car will be equal to that of a petrol-powered car by next year—although electric makers will still lose money. UBS optimistically forecasts that electric vehicles will account for 14 per cent of global car sales by 2025. Forecasts from other institutions were more cautious, but they still hastily raised their expected sales of cars, as battery costs fell and performance improved—The cost per kilowatt hour has fallen from $1,000 in 2010 to $130 - $200 today.