What is Car battery?
{{more sources|date=February 2024}} A '''car battery''' or '''automotive battery''' is a [[rechargeable battery]] which is used to start a [[car]]. The battery is used to start the motor. After that, the motor operates a [[generator]] to charge the battery.<ref>{{cite web|url=https://www.mynrma.com.au/cars-and-driving/roadside-assistance/car-batteries/resources|title=NRMA Car Batteries Safety|access-date=December 15, 2016|archive-date=March 31, 2018|archive-url=https://web.archive.org/web/20180331104401/https://www.mynrma.com.au/cars-and-driving/roadside-assistance/car-batteries/resources|url-status=dead}}</ref> Most are [[lead acid battery|lead acid batteries]], although some [[electric car]]s can have other batteries. Car batteries can be replaced and [[Recycling|recycled]] when they cannot be recharged anymore. They are used to power important electrical components and stabilize the [[voltage]] that keeps the engine running by converting [[chemical energy]] into [[electrical energy]]. All the electrical accessories in a car are controlled and powered by an [[alternator]] which converts some of the engines mechanical energy into electrical energy. The alternator charges the internal battery of the car. The alternator is powered by the timing belt which only moves once the car is started and therefore it cannot be used to start the car and that is why a battery is needed. The alternator works with a timing belt that rests on a pulley attached to the alternator that moves once the car is started. When the timing belt spins the pulley, it turns a [[Rotation|rotator]] shaft attached to the pulley which spins [[Magnet|magnets]] around a [[coil.]] The spinning magnets create [[alternating current]] around the coil. That is directed to the [[rectifier]] which changes it into [[direct current]]. That is used to power the car and its electrical systems. The cars internal computer, also know as the [[Electric Control Unit]] (ECU) decides the [[fuel injection]], exhaust system requirements and throttle response. For p