The ignition coil is a component of the ignition system in an internal combustion engine. Its primary function is to transform the low voltage from the battery into high voltage, typically in the range of 20,000 to 50,000 volts, which is necessary to create a spark at the spark plugs. The high voltage generated by the ignition coil is then distributed to the spark plugs via the spark plug wires, which are connected to the distributor or directly to the individual ignition coils in modern engines with coil-on-plug (COP) systems.