Voltmeter as an Ammeter

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Page created by T July 29th 2009:

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Voltmeter as an Ammeter:

 A Dash mounted Voltmeter can be read as if it is a centre 0 Ammeter. 

Below 13.8 Volts:

Anytime the Engine is running and the Voltmeter is reading below 13.8volts, the Battery is being discharged. This is the equivalent of an Ammeter reading discharge.The closer to zero the needle gets the more heavily the Battery is being discharged. When the Engine is turned off the Battery is not being discharged.

Above 13.8 Volts:

Anytime the Engine is running and the Voltmeter is reading above 13.8volts, the Battery is being charged and the Alternator is powering everything in the Car. This is the equivalent of an Ammeter reading charge.The higher the needle is above 13.8 the more heavily the Battery is being charged.

Overvolt:

Overvolt damages both the Battery and any other Electrical devices. The voltage should not go higher than that stamped on the Alternator (typically 14.2volts).

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