If the alternator is not charging the battery, how did you determine it was good? That is the job of the Alternator. Be sure to see the red Battery/Charging System light come on when you turn the key on with the engine OFF. This is necessary. Or either the Bulb or wring is defective and your Charging system will not work!
RepairPal Certified shops can diagnose and repair your 1995 Oldsmobile Cutlass Ciera. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.