Title, why can we drive for hours and hours on end, with headlights, radio, a/c, etc. (besides stopping for gas, bathroom breaks) But when we leave a light on for as much as an hour, the car battery will pretty much die instantly.
In: Engineering
The battery is used to start the car. Once the car is started, the alternator takes over powering the electrical components. When the engine is turned off, the battery is the only thing capable of powering those components so that’s why a battery will die if you leave your lights or radio on while the engine is off.
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