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
Your car has an alternator (electricity generator) that is driven by the engine. As long as the engine is running, the alternator powers all electric things plus charges the battery. When the engine is off, you start using your battery.
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