Cadillac Repair: General questions with my 99 Deville, excessive amperage, hydrometer

Question
I just had my battery checked because it keep dying and they said the battery is in good condition and then they checked my alternator and it was good also but the battery keep dying.  Can you help me out on this matter.

Thanks

Answer
did the tset your electrical system for excessive amperage draw as the car would normally sit overnight. The maximum amperage output with all the doors closed and hood and trunk is 1/2 amp.

Have them test each cell in your battery with a hydrometer.