Electrical engineering credited with establishing the term "electricity". He also designed the versorium: a device that detects the presence of statically charged objects. In 1762 Swedish professor Johan Carl Wilcke invented a device later named electrophorus that produced a static electric charge. By 1800 Alessandro Volta had developed the voltaic pile, a forerunner of the electric battery In the 19th century, research into the subject started to intensify. Notable developments in this century include the work of Georg Ohm, who in 1827 quantified the relationship between the electric current and potential difference in a conductor, of Michael Faraday (the discoverer of electromagnetic
Electric vehicle battery the cost of automotive battery packs to be between to per kilowatt-hour by 2020. A 2013 study by the American Council for an Energy-Efficient Economy reported that battery costs came down from per kWh in 2007 to per kWh in 2012. The U.S. Department of Energy has set cost targets for its sponsored battery research of per kWh in 2015 and per kWh by 2022. Cost reductions through advances in battery technology and higher production volumes will allow plug-in electric vehicles to be more competitive with conventional internal combustion engine vehicles. In 2016, the world had a Li-Ion production capacity