The battery is often the first thing that comes to mind when people think about what powers a car’s electrical system. After all, batteries are what supply power to most of our devices. However, things work a little differently in cars, where the battery’s primary job is to start the engine. Once the engine is up and running, the alternator takes over, powering your car’s electrical system and recharging the battery while the engine is running. From headlights to
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