How many hours does it take to charge a car battery?

[LeCamille]

If a car battery is charged using the constant voltage and current limiting method, it takes 16 hours. A fully charged battery can be judged by the following phenomena: 1. Observe the charge indicator eye - green indicates a full charge; 2. A large number of bubbles appear in the battery, showing a boiling phenomenon; 3. The terminal voltage rises to the maximum value and no longer increases within two hours; 4. The electrolyte level rises to its highest position and no longer increases within two hours. 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, compared with traditional batteries, they have advantages such as not requiring any liquid addition, easy connection to terminal posts, and long power storage time.