battery runs down when parked 24 to 36 hours on 1997 Buick Park Avenue

i have replaced battery

Asked by for the 1997 Buick Park Avenue
car will not start when parked 24 to 36 hours
2 answers
Have your Alternator checked for voltage out put. Have your battery load tested and then if they are OK , you may have a parasitic drain, which needs to be diagnosed.