What does it mean when the car battery light turns red?

[DelJustin]

Car battery indicator light turns red because: The light should turn off after successful ignition, indicating no issue. If the battery light flashes when the car is about to stop, it suggests poor contact in the wires connecting the charger to the battery. Below is relevant information: Classification: The battery is an essential part of a car and can be divided into traditional lead-acid batteries and maintenance-free batteries. Since the battery uses lead-calcium alloy for the grid frame, it produces less water decomposition during charging and has lower water evaporation. Additionally, the sealed structure of the casing releases minimal sulfuric acid gas. Compared to traditional batteries, it has advantages such as not requiring any liquid addition, secure terminal connections, and longer power storage duration. Lifespan: The designed lifespan of a battery is 27 months. Generally, family cars are more economical, and new car batteries often last 3-4 years. However, after the first replacement, it is usually necessary to replace the battery every 2 years.