rckt

I recently replaced my battery and noticed the voltage varies from 13.7 to 14.1 volts. Does it charge when the RPM's increase like a generator or when at low RPM's like an alternator? I rev it and notice no difference in the voltage.

johnodrake

14v +/- .1

VettedCandidate

14.2 - give or take .1

Walkthedog

14.1

jackcasa

No, you won't see a voltage change when revving the engine.

DSOMvette

14.1 +/-.1

keg

The way an alternator works, at idle 600 engine rpm the output might be say 20 amps max. for a 100 amp alternator, but at 2000 to 2500 engine rpm you could get full output at 100 amps. If you ever had a car running at idle at night with all the electrical power devices running the alternator might not keep up with the electrical demand so your voltage will drop to the battery voltage say 12.5 volts. If this load condition continues you start to discharge your battery. Finally getting to the point where nothing works and the car can't start. BTW the alternator is usally running at 2.5 times engine rpm so in the example above the alternator is turning at 1500 at idle and 6250 at 2500 engine rpm.

cclive

When cold, 14.5v, dropping to 14.2v when it warms up.

raider4251

2008 NPP A6 1LT

LS WON

From a low of 13.6 to 14.5. it is at the lowest voltage once car has been running for awhile.

need-for-speed

about 14.1 inches

phileaglesfan

inthehunt2

That's a big battery!

EvilBoffin

And they say that size doesn't matter . . .

.

BLU JET 07

13.9- 14.3 v

RanGer498

HuskerBullet

I guess it depends upon who's using it......14.1V.

Red Rochester

foremaw

14.3 +/-

dvilin