Testing a automobile battery with a voltmeter is an easy however efficient approach to make sure that your battery is functioning correctly. A voltmeter measures {the electrical} potential distinction between two factors in a circuit, and within the case of a automobile battery, it may be used to measure the voltage of the battery terminals.
A wholesome automobile battery ought to have a voltage of round 12.6 volts when it’s absolutely charged. When the engine is working, the voltage needs to be between 13.5 and 14.5 volts. If the voltage is under 12.6 volts, it signifies that the battery will not be absolutely charged and will should be changed. If the voltage is above 14.5 volts, it signifies that the battery is overcharging and could also be broken.