What Is Normal Battery Voltage For Car. At 124 volts a car battery is. The normal voltage needed to start the car begins from 126 volts.
What really matters in terms of cranking power in a car is the total current flow available aka the amperage which can only be checked under load. Thats why a simple voltage check of a multicell wet battery doesnt tell you much unless one of the cells is bad which a voltage check can turn up. Testing the Battery.
Normal voltage of the car battery when the car is sitting idle.
A good battery should be between 124 to 126v at rest it will drop some if any accesories are on lights radio phone or gps chargers flashers etc if you have an automotive voltageamperage tester available you can do a load test on the battery hook it up and load it by 12 the cca rating of the battery for 15 seconds if it drops below 10v its time for a new battery. Its power drops from 100 to 25. If there is a dead or weak cell normal charging voltage cant be achieved on a battery. Car battery voltage.
