12V Battery Voltage: What Is the Actual Voltage When Fully Charged? Insights & Measurements
A 12-volt battery usually measures between 12.6 and 14.4 volts. When fully charged and the engine is off, it shows 12.6 volts. The voltage increases to 14.4 volts when the engine runs, due to charging. This voltage range is essential for the proper function of the car’s electrical system. For instance, a traditional flooded lead-acid … Read more