What Are the Signs of a Car Battery Failure?

[ReedLynn]

Signs of a car battery failure are as follows: 1. Difficulty starting the car: If the car suddenly becomes difficult to start without any other factors, it may be a sign that the battery is about to fail. 2. Dimming lights during idle: For example, when waiting at a red light or temporarily parked, the headlights suddenly dim. This is because the charging power of the engine decreases during idle. 3. Battery warning light comes on: When the battery warning light comes on, it is a reminder for the owner to take the car to a repair shop for battery maintenance and testing. 4. Normal driving under usual circumstances, but occasionally finding the entire car without power after parking and restarting: This is because when the battery's lifespan is nearing its end, the starting current is insufficient, leading to increased oxidation at the battery terminals and resulting in a complete loss of power.