Battery warning light stays on or flickers
Headlights dim, flicker, or get brighter with engine speed
Electrical accessories work poorly or intermittently
Engine cranks slowly or won’t start
Battery keeps dying after being charged or replaced
Strange whining, grinding, or squealing noise from the engine area
Smell of burning rubber or electrical odor
Stalling or rough running while driving
Dashboard lights behave erratically
Voltage reading is low or unstable with a multimeter
Jump-start works briefly, then the car dies again
Corroded, loose, or damaged alternator wiring or belt issues