ok...this I can help ya with....maybe. I had the same problem and I found my alt was bad. I tried the normal thing of disconnecting the batt when the car was running and all seemed good. Then I did research and found that sometimes when a alt goes it can actually start to overcharge the battery when a load is on it(like when you drive or rev the vehicle). When this happens it will slowly fry your battery. When it finally suceeds then your battery will not even hold a little charge. Not even if you charge it all day. Anyway, I bet your alternator is your problem. Pick up a used one from a junk yard for now and see what happens. Hope this helps.
24 REFS- seth350,heatseeker,VOA_Nightmare,lude,Imaspaceguy9 0