This building used the steel-frame method, innovated in Chicago. It was originally built with 10 stories, a considerable height in the 1800s, to a height of 138 feet (42 m), making it the tallest building in the world. It was later expanded to 12 stories with a height of 180 feet (55 m).
A battery is a device that converts chemical energy into electrical energy and vice versa. batteries for hybrid, plug-in hybrid, and electric vehicles. specifications used to characterize battery nominal and maximum characteristics. pack that consists of individual modules and cells organized in series and parallel.
In order to provide a potential difference, or electro-motive force (EMF) a store of energy is required. One such method is a battery or cell. The common usages of the term battery is any device that converts chemical energy into electrical energy. However, strictly speaking, the term battery is used when several electrical cells are connected together to provide a source of a potential difference in a circuit.