Dim or flickering headlights
Dashboard battery warning light
Electrical accessories acting weak or erratic
Dead or weak battery after driving
Difficulty starting the car
Strange whining or grinding noises from the engine area
Burning smell from the engine bay
Battery keeps dying even after replacement
Voltage reading below normal with a multimeter
Car stalls or struggles while running
Power windows, radio, or lights slowing down
Corroded or loose alternator connections
Visible belt wear or slipping
Frequent jump-starts needed
Warning lights appearing together on the dashboard