[Mariachi]

On Feb 27, 12:43 pm, "D.Kreft" wrote:
On Feb 27, 8:54 am, Matt Ion wrote:

When the car is running, the alternator provides ALL the car's electrical needs,
including for the sound system. The battery DOES NOT.

Correct...right up until the point where the current demand from the
vehicle (presumably from a big honkin' stereo system) exceeds the
output capability of the alternator, at which point the battery starts
converting that yummy chemical energy into electrical engery...which
only makes matters worse because then the battery becomes an even
*larger* load on the alternator as it tries to not only run your
electronics, but also recharge the battery.

As Matt has spelled-out (several times now), it really is this simple.

-dan

finally, yes, this is what I was asking... thanks Kreft.