Re: Silly Question - can you remove/swap batteries from the car if it's running?
In the old days we might install a new battery that way, but never to charge a dead one. James is certainly right. A lot of load for the alternator to handle, and that battery may well have a dead cell in it. That could be why it is dead, or worse yet a damaged cell, that will short. Now, you have a dead battery and a dead alternator....