Here are ways to spot a failing battery quickly.
- The check-engine light on the car dashboard stays lit when the car is running.
- Looking at the battery with the hood open and the casing appears to be swollen.
- Your car needs to be jump-started to get running some days.
- When the car is running, the interior lights are flickering or getting dim.
- After you start your car, the headlights are much dimmer than usual.
- The engine is having trouble cranking over first thing in the morning.
- The battery has a strong smell that can be foul.