
Component that converts mechanical engine energy into electricity to charge the battery and power electrical systems.
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The alternator is the vehicle's onboard power plant, converting mechanical energy into alternating current (AC), which is then rectified to DC. It powers the ignition, lights, and accessories while maintaining the battery's charge. Failure leads to battery depletion and vehicle shutdown. Modern alternators feature internal regulators to prevent overcharging and ensure a stable voltage output under varying loads.