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.
There are two ways to store electrical energy, chemically and statically. Batteries are a means of chemical storage. Electrons that are a part of the molecules of the chemicals or substances in a battery are coaxed to leave those chemicals or substances and become a part of the electrical current that we use. In virtually all batteries the process is reversible to some extent.