When removing a car battery, should the positive or negative terminal be disconnected first?

[LaHarper]

You should disconnect the negative terminal first for safety reasons. Here is some information about car batteries: 1. The battery is a very important component in a car and is also a wearable part that requires regular replacement. 2. When the engine is not running, the battery supplies power to the car; after starting the engine, the alternator powers the car's electronic devices. 3. The battery needs to be replaced periodically. A typical car battery can last 3 to 4 years. As the battery ages, its ability to hold a charge diminishes, at which point it needs to be replaced. Before winter arrives, it is recommended to check the battery. If the battery's internal resistance and voltage do not meet standard values, it also needs to be replaced.