Is the red terminal of a battery the positive or negative pole?

[LaPaige]

In a battery, the red terminal is the positive pole, while the negative pole is black. Connecting them incorrectly can damage all the electronic devices in the vehicle. The structure of a car lead-acid battery mainly includes positive and negative plates, separators, electrolyte, case, connecting straps, and terminal posts. The battery is an essential part of a car and can be divided into traditional lead-acid batteries and maintenance-free batteries. Since lead-calcium alloy is used for the grid frame in these batteries, the amount of water decomposition during charging is minimal, and water evaporation is also low. Additionally, the sealed structure of the case releases very little sulfuric acid gas. Compared to traditional batteries, they offer advantages such as no need to add any liquid, easy connection to terminal posts, and long-term power storage.