The conversion of low voltage current into high voltage current and its distribution among the engine cylinders is carried out by battery ignition devices. The publication examines the components of the battery ignition system, the principle of operation of the ignition system, low and high voltage circuits, the ignition coil and additional resistor, as well as the breaker -distributor, ignition timing, vacuum regulator, octane corrector and spark plugs. In addition, the book provides information about contact-transistor and contactless ignition systems, as well as malfunctions of ignition devices and their care.