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Why is battery used in a motor car?

Updated: 8/19/2019
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8y ago

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The main purpose of the battery is to power the electric starter. It also powers the lights, horn, and accessories when the motor is not running. Once the car is running, the alternator takes over the job of powering the lights etc.. and recharges the battery as well.
The battery in a vehicle is used for several purposes. The heaviest [most current intensive] function is to provide the energy to crank the engine and provide ignition system energy to the spark plugs. The battery also acts as a "filter" between the alternator or generator and the rest of the electrical system, acting as a buffer to voltage spikes and surges. It also provides continuing power, when the engine is not running, to various electrical components [like for example, onboard computers, radio or entertainment systems, parking lights, hazard flasher light warning system, interior lighting, power equiment (such as power windows, seats, door locks), etc.].

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Q: Why is battery used in a motor car?
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