How to Determine if a Car Battery is Dead

[LauraLee]

Methods to determine if a car battery is dead include: 1. The car fails to start, and the engine makes abnormal noises when attempting to ignite; 2. Open the engine hood and observe the holes on the battery—green indicates good condition, while black signifies a problem; 3. If the car battery is dead, the battery warning light and engine warning light on the dashboard will illuminate. The battery is an essential part of a car and can be categorized 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 minimizes the release of sulfuric acid gas. Compared to traditional batteries, these batteries offer advantages such as no need to add any liquid, secure terminal connections, and longer power storage duration.