What Is the Voltage of a Good Car Battery? Healthy Ranges and Testing Tips
A good car battery has a resting voltage of 12.6 volts when the engine is off. When the engine is running, the voltage rises to between 13.5 and 14.5 volts. This increase happens because the alternator charges the battery, ensuring it performs optimally. To test car battery voltage, use a multimeter. Set the multimeter to … Read more