History of the battery his iron scalpel, the leg twitched. Galvani believed the energy that drove this contraction came from the leg itself, and called it "animal electricity". However, Alessandro Volta, a friend and fellow scientist, disagreed, believing this phenomenon was caused by two different metals joined together by a moist intermediary. He verified this hypothesis through experiment, and published the results in 1791. In 1800, Volta invented the first true battery, which came to be known as the voltaic pile. The voltaic pile consisted of pairs of copper and zinc discs piled on top of each other, separated by a layer of cloth
Electric vehicle battery kWh capacity in order to make an impact on petrol cars. Citigroup indicates $230/kWh. Toyota Prius 2012 plug-in's official page declare of autonomy and a battery capacity of 5.2 kWh with a ratio of /kWh, while the Addax (2015 model) utility vehicle already reaches 110 kilometres (68.5 mi) or a ratio of 7.5 kilometers (4.6 mi)/kWh. Battery electric cars achieve about /kWh. The Chevrolet Volt is expected to achieve 50 MPGe when running on the auxiliary power unit (a small onboard generator) at 33% thermodynamic efficiency that would mean 12 kWh for , or about 240 watt-hours per mile. For