Back بطارية السيارة Arabic Автомобилен акумулатор Bulgarian গাড়ির ব্যাটারি Bengali/Bangla Bateria d'automòbil Catalan Autobaterie Czech Starterbatterie German Batería de automóvil Spanish باتری خودرو Persian Käynnistysakku Finnish Batterie automobile French
An automotive battery, or car battery, is a rechargeable battery that is used to start a motor vehicle.
Its main purpose is to provide an electric current to the electric-powered starting motor, which in turn starts the chemically-powered internal combustion engine that actually propels the vehicle. Once the engine is running, power for the car's electrical systems is still supplied by the battery, with the alternator charging the battery as demands increase or decrease.