Battery dies on CLK 320

Question by tblowry posted 9 months ago in Mercedes-Benz

Hi, I have a 2000 CLK 320 Cabriolet.  I just replaced the battery Saturday evening.  I drove the car about 10 miles on Sunday.  Monday morning, the battery was dead.  I did not get any readings on the dash about electrical problems. I did not leave the lights on, nor was there anything plugged into the outlets that might have drained the batter.  Is it the alternator?

 

Thanks in advance for your help!