What Would Cause The Alternator To Not Charge The Battery. Cars are increasingly coming with modern electronics. Yes even if the alternator is good and charging at around 14 volts it can still drain the battery sometimes overnight but more often a gradual decline in battery strength is noticed.
While your car is running disconnect the positive battery cable. Once you connect the alternator to a terminal it should show between 12 to 135 voltage scale. The battery will not charge regardless of the condition of the alternator or battery if the sensor is bad.
If your alternator overcharges it will produce more voltage to the battery and make your battery very hot and eventually the battery will lose the electrolyte.
Quite uniform between compartments. If the vehicle continues to run your alternator is properly charging the battery. The battery will not charge regardless of the condition of the alternator or battery if the sensor is bad. However this is not a good idea because it could damage the electrical system of your vehicle and cause greater problems.
