Publisher Summary This chapter discusses the types of lead-acid (secondary) batteries, such as motive power batteries. Motive power lead-acid batteries are the power source used in every kind of electric vehicle from road transport to fork lift trucks in industry. Many manufacturers throughout the world supply lead-acid batteries and it is impossible to review all their products. Instead, the products of one major UK-based international producer, Chloride Motive Power, are considered in detail. The other type of battery discussed is standby power batteries; these are designated as high-performance types. The nominal voltage is 2V/cell, i.e. a nominal l l0V battery will have 55 cells. On discharge, the recommended final voltage at which the discharge should be terminated is highlighted in the chapter.