What should be the voltage reference table for a 12V battery?

[BrooklynMarie]

The voltage of a 12V battery is not fixed and is generally slightly higher. Batteries used in different fields may have different voltages. For electric vehicles, a fully charged 12V battery typically has a voltage of around 13.3V, while for cars, a fully charged 12V battery usually has a voltage between 12.8V and 13.0V. Below is some information about car batteries: 1. Precautions: Both excessively high or low battery voltage can have certain impacts. It is advisable to regularly check the battery's condition. When the battery voltage drops below 10.8V, it needs to be charged promptly. If the battery voltage is too low, the car may be difficult to start or even fail to start; if the battery voltage is too high, it may damage the battery. 2. Determining if the battery is fully charged: By charging time: Typically, a household car battery has a capacity of around 60Ah, and the required charging current is one-tenth of the battery capacity, which is 6A. Charging at this current usually takes about 3-5 hours to fully charge. If a lower current is used for charging, it may take about 10 hours to fully charge.