It will vary depending on what demand you are placing on it such as heater, brake lights and so on but it should put out about 14 volts pretty consistently until fully charged and then about 13.
Alternators should produce around 14 volts. I say around because this can vary with temperature, engine speed and the age of the alternator. If you think yours is kicking out too much it's probably the voltage regulator. If you think its not enough it could be the brushes. The easiest thing to do is to pull it and take it to a parts store; most of them will test your alternator for free.
13.5 to 15.5 volts
From 13.5 to 15.5 Volts.
It can put out too many volts and destroy the battery but not drain it. The alternator should put out between 13.5 to 16 volts.
13.5 to 16 volts DC.
Check the voltage at the battery with the engine running. It should read from 13.5 volts to 16 volts. If it reads lower than 13.5 volts the alternator is defective.
It should put of 13.5 to 15.5 volts. The alternator is an 80 amp alternator.
Connect a voltmeter to the alternator and start the engine. An automotive alternator should read aprox 14.5 Volts when it's running and the battery is fully charged.
around 14-14.5 volts
== == It is a 12 volt system. The alternator should put out 13.5 to 14.5 volts with the engine running.== == It is a 12 volt system. The alternator should put out 13.5 to 14.5 volts with the engine running.
The alternator should be putting out between 13.5 and 16 volts on a good alternator with the engine running as measured with a DC volt meter at the battery posts. Any less or any more and the alternator is defective of the belt is slipping.
With engine running at idle you should read 13.5 to 15.5 volts at the battery.