Potential signs of a dying car battery include slow engine cranking when starting the vehicle, a swollen battery case, battery corrosion or leaks or low battery fluid. Dimming accessory lights are also a typical symptom of a dying car battery.
The age of the battery plays a role in how likely it is to die. A battery older than three years is nearing the end of its life expectancy. Drivers should watch for signs of battery problems as the battery ages to catch the problem before the battery dies completely.
Automotive shops have electronic testers that attach to the car battery to check its condition. A driver who is concerned about the condition of the battery can request testing to determine if the battery needs to be replaced.