Battery warning light on the dashboard
Dimming or flickering headlights
Electrical accessories working poorly or intermittently
Slow power windows or weak blower fan
Strange whining, grinding, or squealing noises
Burning smell near the engine
Dead battery after driving
Car starts then stalls shortly after
Difficulty starting the vehicle
Battery keeps needing jump-starts
Corroded or loose alternator wiring
Multimeter shows low charging voltage
Engine performance issues when electrical load increases
Dashboard gauges acting erratically
Frequent blown fuses
Visible damage or wear on the alternator belt
Alternator housing feels unusually hot
Clicking sounds from a weak electrical system