short

I'm thinking I have a short some where in system or maybe a bad alternator, but I'm not sure.

My car is in the process of getting a new paint job and cleaned up to be street respectable. I've been trying to start the car at least one or twice a week to keep the battery charged, and it just doesn't seem to be doing the job. I started it tonight after having it on the charger for a few hours, I let it run for about 20 minutes and shut it down. After about two minutes of sitting I tried to restart the car and I got just a few cranks and then there was nothing left of the battery and it wouldn't crank fast enough to start. What do you folks think, a short, alternator, or something else? I guess I should at least disconnect the battery until I figure out what the problem is.

Thanks in advance for the help.

Rich