Ideal is 14.2 volts 13.8 is acceptable
With the engine not running you should read 12.6 volts on a fully charged battery. With the engine running you should read from 13.5 to 15.5 volts at the battery posts.
Engine running at idle you should read 13.5 to 15.5 volts.
12 volts
With the engine running and all lights and acces off approx 14 volts should be put out
Bad alternator? A fully charged battery should read approx. 12.8 without engine running With engine running should read approx. 13.8-14.2 volts
12 volts!!! 12 volts!!! Real Answer 13.1 volts (Depending on Battery)
It is a special Cadillac battery, that has a higher voltage than most cars (14-15 volts). The venting helps to keep it from building up pressure and exploding.
What voltage battery are you referring to? An automobile battery is 12 volts and a fully charged auto battery should read 12.6 volts.
depends on the kind of battery. a regular battery (aa,aaa,d,c) should supply 1.5 volts. a car battery should supply 12 volts
With the engine running you should have a reading of 13.5 to 15.5 volts at the battery. So 14 volts is acceptable.
Be sure the battery is fully charged before you start. A fully charged battery should read 12.68 Volts. If the battery is very low when you check the alternator output it will not give you an accurate reading.
Two possibles. Either the battery needs to be replaced, or the stator is not charging. First check the battery with the engine off, should have 12. 2 volts or more, if under 12 volts, then charge and check again. If under 12 volts, then replace. If over 12 volts, run engine, check the battery volts, should have over 13 volts at idle, rev up, should get over 14 volts. If battery still shows only 12. 2 or so volts, then the stator in the engine has to be replaced.