Joel,

A bad battery will not hurt an alternator, once the car is running it is relying on the alternator for "juice". However I wouldn't recommend leaving a bad battery in place as it certainly can't be good. The battery just enables you to get the car running. But, a bad alternator will most definitely kill a good battery as it seeks for a source of energy. Subsequently the alternator doesn't charge the battery contrary to popular belief other than a minuscule volt here or there. The alternator would surely blow a battery to high heaven if that were the case. Hope this helps a little. I'm sure someone will chime in if I have gotten anything twisted. Happy motoring

P.S. I like your signature/quote

__________________
Brandon



2008 S550
1957 Dodge D100
1967 VW Microbus 21 Window
2001 Suburban
2004 Beach cruiser bicycle
-----------------GO DUKE!-----------------

"It cannot be emphasized too strongly or too often that this great nation was founded not by religionists, but by Christians; not on religion, but on the Gospel of Jesus Christ. For that reason alone, people of other faiths have been afforded freedom of worship here." Patrick Henry 1776