Battery warning light stays on or comes on while driving
Headlights dim, flicker, or get brighter and dimmer with engine speed
Electrical accessories work poorly or stop working
Engine cranks slowly or won’t start after the battery is charged
Battery keeps dying repeatedly
Strange whining, grinding, or squealing noise from the alternator area
Burning smell from overheating wires or alternator
Engine stalls or runs rough when electrical load increases
Voltage reading is outside normal range with a multimeter
Car starts with a jump but dies soon after the jumper cables are removed