[psychoSEAL]

I am scratching my head on this one. Get into the car turn the key and hear clicking sound. Had alternator bench tested, reads 100amps. Found a bad conection on alternator, replaced connector. Charged battery, still nothing but clicking. Had battery load tested at Advance, shows replace battery 0 CCAs. Took it to another Advance to check, same reading after trying to put a charge on it at the store. Nothing. Bought a new Optima (red top) 800 CCA battery. Replaced battery cable ends and hooked up the new battery. Turned right over with the turn of the key. That was 2 days ago. Get into the car this morning. Nothing, no clicking, no nothing. Took battery to Advance shows battery needs to be charged. What else could be the problem. I haven't changed any thing or has another component dragging the battery down. Thanks for your input!